2.2.0.25truefalse010000 - Document - Risk/Return Summary {Unlabeled}falsefalsetrue1falsefalseUSDtruefalse{dei_LegalEntityAxis} : SIMT U.S. MANAGED VOLATILITY FUND {rr_ProspectusShareClassAxis} : SIMT U.S. MANAGED VOLATILITY FUND - CLASS A 1/29/2010 - 2/4/2011 USD ($) $eol_0001104659-11-005144_STD_372_20110204_0_396770x-9996091_429423x-9996142http://www.sec.gov/CIK0000804239duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseck0000804239_S000006678Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006678Memberdei_LegalEntityAxisexplicitMemberfalsefalseck0000804239_C000018203Memberrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000018203Memberrr_ProspectusShareClassAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0iso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturn1falsefalsefalse00SIMT U.S. MANAGED VOLATILITY FUND | SIMT U.S. MANAGED VOLATILITY FUND - CLASS ASIMT U.S. MANAGED VOLATILITY FUND | SIMT U.S. MANAGED VOLATILITY FUND - CLASS Afalsefalsefalsefalsefalse1falsefalseUSDtruefalse{dei_LegalEntityAxis} : SIMT U.S. MANAGED VOLATILITY FUND {rr_ProspectusShareClassAxis} : SIMT U.S. MANAGED VOLATILITY FUND - CLASS A 1/29/2010 - 2/4/2011 USD ($) $eol_0001104659-11-005144_STD_372_20110204_0_396770x-9996091_429423x-9996142http://www.sec.gov/CIK0000804239duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseck0000804239_S000006678Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006678Memberdei_LegalEntityAxisexplicitMemberfalsefalseck0000804239_C000018203Memberrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000018203Memberrr_ProspectusShareClassAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0iso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseSIMT U.S. MANAGED VOLATILITY FUND | SIMT U.S. MANAGED VOLATILITY FUND - CLASS A3false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00U.S. MANAGED VOLATILITY FUNDfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return, Heading4false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment GoalfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment Objective, Heading5false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Capital appreciation with less volatility than the broad U.S. equity markets.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseinvestment Objective, Primary6false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and ExpensesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpense, Heading7false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This table describes the fees and expenses that you may pay if you buy and hold Fund shares.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseExpense, Narrative8false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00SHAREHOLDER FEES (fees paid directly from your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees, Caption9false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000006678Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018203Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000006678Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018203Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/ShareholderFeesDatafalsefalse020010 - Schedule - Shareholder Feestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006678MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000018203MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006678Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. MANAGED VOLATILITY FUND - CLASS Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000018203Memberrr_ProspectusShareClassAxisexplicitMemberSIMT U.S. MANAGED VOLATILITY FUNDSIMT U.S. MANAGED VOLATILITY FUND - CLASS Aiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_RedemptionFeeOverRedemptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truetruetrue0.00500.0050[2]falsefalsefalsetruefalse2truetruetrue0.00500.0050[2]falsefalsefalsetruefalse3truetruetrue0.00500.0050[1]falsefalsefalsetruefalse4truetruetrue0.00750.0075[2]falsefalsefalsetruefalse5truetruetrue0.00750.0075[2]falsefalsefalsetruefalse6truetruetrue0.00750.0075[2]falsefalsefalsetruefalse7truetruetrue0.00500.0050[2]falsefalsefalsetruefalse8truetruetrue0.00500.0050[2]falsefalsefalsetruefalse9truetruetrue0.00600.0060[3]falsefalsefalsetruefalse10truetruetrue0.00600.0060[4]falsefalsefalsetruefalse11truetruetrue0.00600.0060[3]falsefalsefalsetruefalse12truetruetrue0.00600.0060[3]falsefalsefalsetruefalse13truetruetrue0.00600.0060[4]falsefalsefalsetruefalse14truetruetrue0.00600.0060[3]falsefalsefalsetruefalse15truetruetrue0.00250.0025[2]falsefalsefalsetruefalse16truetruetrue0.01000.0100[2]falsefalsefalsetruefalseOtherrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph b -Subsection instructions falsefalseRedemption fee0rr_RedemptionFeeOverRedemptiontruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue0.00500.0050falsefalsefalsetruefalseOthernanafalsefalseRedemption fee1(applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $25 million within any thirty (30) day period)11Shareholder Fees UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006678MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000018203MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No authoritative reference available.falsefalseShareholder Fees [Table]10false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses, Caption11false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000006678Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018203Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000006678Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018203Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/OperatingExpensesDatafalsefalse020020 - Schedule - Annual Fund Operating Expensestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006678MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000018203MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006678Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. MANAGED VOLATILITY FUND - CLASS Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000018203Memberrr_ProspectusShareClassAxisexplicitMemberSIMT U.S. MANAGED VOLATILITY FUNDSIMT U.S. MANAGED VOLATILITY FUND - CLASS Aiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00650.0065falsefalsefalsetruefalse2truetruetrue0.00650.0065falsefalsefalsetruefalse3truetruetrue0.00650.0065falsefalsefalsetruefalse4truetruetrue0.00650.0065falsefalsefalsetruefalse5truetruetrue0.00650.0065falsefalsefalsetruefalse6truetruetrue0.00650.0065falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00280.0028falsefalsefalsetruefalse10truetruetrue0.00280.0028falsefalsefalsetruefalse11truetruetrue0.00280.0028falsefalsefalsetruefalse12truetruetrue0.00280.0028falsefalsefalsetruefalse13truetruetrue0.00280.0028falsefalsefalsetruefalse14truetruetrue0.00280.0028falsefalsefalsetruefalse15truetruetrue0.01500.0150falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement Fees0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00650.0065falsefalsefalsetruefalseOthernanafalsefalseManagement Fees2falseRowprimaryElement*4false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.000.00falsefalsefalsetruefalse2truetruetrue0.000.00falsefalsefalsetruefalse3truetruetrue0.00250.0025falsefalsefalsetruefalse4truetruetrue0.000.00falsefalsefalsetruefalse5truetruetrue0.000.00falsefalsefalsetruefalse6truetruetrue0.00250.0025falsefalsefalsetruefalse7truetruetrue0.000.00falsefalsefalsetruefalse8truetruetrue0.00250.0025falsefalsefalsetruefalse9truetruetrue0.000.00falsefalsefalsetruefalse10truetruetrue0.000.00falsefalsefalsetruefalse11truetruetrue0.00250.0025falsefalsefalsetruefalse12truetruetrue0.000.00falsefalsefalsetruefalse13truetruetrue0.000.00falsefalsefalsetruefalse14truetruetrue0.00250.0025falsefalsefalsetruefalse15truetruetrue0.000.00falsefalsefalsetruefalse16truetruetrue0.00250.0025falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution (12b-1) Fees0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.000.00falsefalsefalsetruefalseOthernanafalsefalseDistribution (12b-1) Fees3falseRowprimaryElement*5false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00640.0064falsefalsefalsetruefalse2truetruetrue0.00890.0089falsefalsefalsetruefalse3truetruetrue0.00640.0064falsefalsefalsetruefalse4truetruetrue0.00670.0067falsefalsefalsetruefalse5truetruetrue0.00920.0092falsefalsefalsetruefalse6truetruetrue0.00670.0067falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00580.0058falsefalsefalsetruefalse10truetruetrue0.00830.0083falsefalsefalsetruefalse11truetruetrue0.00580.0058falsefalsefalsetruefalse12truetruetrue0.00590.0059falsefalsefalsetruefalse13truetruetrue0.00840.0084falsefalsefalsetruefalse14truetruetrue0.00590.0059falsefalsefalsetruefalse15truetruetrue0.00690.0069[2]falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther Expenses0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00640.0064falsefalsefalsetruefalseOthernanafalsefalseOther Expenses4falseRowprimaryElement*7false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01290.0129falsefalsefalsetruefalse2truetruetrue0.01540.0154falsefalsefalsetruefalse3truetruetrue0.01540.0154falsefalsefalsetruefalse4truetruetrue0.01320.0132falsefalsefalsetruefalse5truetruetrue0.01570.0157falsefalsefalsetruefalse6truetruetrue0.01570.0157falsefalsefalsetruefalse7truetruetrue0.01300.0130falsefalsefalsetruefalse8truetruetrue0.01550.0155falsefalsefalsetruefalse9truetruetrue0.00860.0086falsefalsefalsetruefalse10truetruetrue0.01110.0111falsefalsefalsetruefalse11truetruetrue0.01110.0111falsefalsefalsetruefalse12truetruetrue0.00870.0087falsefalsefalsetruefalse13truetruetrue0.01120.0112falsefalsefalsetruefalse14truetruetrue0.01120.0112falsefalsefalsetruefalse15truetruetrue0.02930.0293falsefalsefalsetruefalse16truetruetrue0.01550.0155falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph d -Subsection instructions falsefalseTotal Annual Fund Operating Expenses0rr_ExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01290.0129falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses14Annual Fund Operating Expenses UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006678MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000018203MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Table]12false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00EXAMPLEfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, Heading13false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and that you sell your shares at the end of each period. The Example also assumes that each year your investment has a 5% return, Fund operating expenses remain the same and you reinvest all dividends and distributions.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative14false0rr_ExpenseExampleByYearCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Although your actual costs and returns might be different, your approximate costs of investing $10,000 in the Fund would be:falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, By Year, Caption15false0rr_ExpenseExampleWithRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000006678Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018203Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000006678Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018203Member row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/ExpenseExamplefalsefalse020030 - Schedule - Expense Example {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue131131falsefalsefalsetruefalse2truefalsetrue157157falsefalsefalsetruefalse3truefalsetrue157157falsefalsefalsetruefalse4truefalsetrue134134falsefalsefalsetruefalse5truefalsetrue160160falsefalsefalsetruefalse6truefalsetrue160160falsefalsefalsetruefalse7truefalsetrue132132falsefalsefalsetruefalse8truefalsetrue158158falsefalsefalsetruefalse9truefalsetrue8888falsefalsefalsetruefalse10truefalsetrue113113falsefalsefalsetruefalse11truefalsetrue113113falsefalsefalsetruefalse12truefalsetrue8989falsefalsefalsetruefalse13truefalsetrue114114falsefalsefalsetruefalse14truefalsetrue114114falsefalsefalsetruefalse15truefalsetrue296296falsefalsefalsetruefalse16truefalsetrue158158falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, With Redemption, 1 YearfalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.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:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 3 YearsfalseUSDfalsefalse$3falseColumnprimaryElement*5false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue708708falsefalsefalsetruefalse2truefalsetrue839839falsefalsefalsetruefalse3truefalsetrue839839falsefalsefalsetruefalse4truefalsetrue723723falsefalsefalsetruefalse5truefalsetrue855855falsefalsefalsetruefalse6truefalsetrue855855falsefalsefalsetruefalse7truefalsetrue713713falsefalsefalsetruefalse8truefalsetrue845845falsefalsefalsetruefalse9truefalsetrue477477falsefalsefalsetruefalse10truefalsetrue612612falsefalsefalsetruefalse11truefalsetrue612612falsefalsefalsetruefalse12truefalsetrue482482falsefalsefalsetruefalse13truefalsetrue617617falsefalsefalsetruefalse14truefalsetrue617617falsefalsefalsetruefalse15falsefalsetrue00falsefalsefalsetruefalse16truefalsetrue845845falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 5 YearsfalseUSDfalsefalse$4falseColumnprimaryElement*6false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.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:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 10 YearsfalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006678MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000018203MemberRowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006678Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. MANAGED VOLATILITY FUND - CLASS Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000018203Memberrr_ProspectusShareClassAxisexplicitMemberSIMT U.S. MANAGED VOLATILITY FUNDSIMT U.S. MANAGED VOLATILITY FUND - CLASS Aiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue131131falsefalsefalsetruefalse2truefalsetrue409409falsefalsefalsetruefalse3truefalsetrue708708falsefalsefalsetruefalse4truefalsetrue15561556falsefalsefalsetruefalseOthernanafalsefalseSIMT U.S. MANAGED VOLATILITY FUND SIMT U.S. MANAGED VOLATILITY FUND - CLASS A41Expense Example (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006678MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000018203MemberRowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExample.No authoritative reference available.falsefalseExpense Example, With Redemption [Table]16false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00PORTFOLIO TURNOVERfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover, Heading17false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 53% of the average value of its portfolio.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover18false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Investment StrategiesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Heading19false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The U.S. Managed Volatility Fund will typically invest in securities of U.S. companies of all capitalization ranges. These securities may include common stocks, preferred stocks, ETFs and warrants. The Fund uses a multi-manager approach, relying on a number of sub-advisers with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation (SIMC), the Fund's adviser. The Fund is expected to achieve an absolute return of the broad U.S. equity markets, but with a lower absolute volatility. Over the long term, the Fund is expected to achieve a return similar to that of the Russell 3000 Index, but with a lower level of volatility. However, given that the Fund's investment strategy focuses on absolute return and risk, the Fund's sector and market capitalization exposures will typically vary from the index and may cause significant performance deviations relative to the index over shorter-term periods. The Fund seeks to achieve lower volatility by constructing a portfolio of securities that effectively weighs securities based on their total expected risk and return, without regard to market capitalization and industry.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Narrative20false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal RisksfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk, Heading21false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Equity Market Risk - The risk that stock prices will fall over short or extended periods of time. Exchange-Traded Funds (ETFs) Risk - The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio securities. Hedged Strategies Risk - The Fund may employ investment strategies that involve greater risks than the strategies used by typical mutual funds. Although some of the sub-advisers use hedged strategies, there is no assurance that hedged strategies will protect against losses or perform better than non-hedged strategies, and some sub-advisers may use long-only strategies. Investment Style Risk - The risk that securities selected as part of a managed volatility strategy may underperform other segments of the equity markets or the equity markets as a whole. Leverage Risk - The use of leverage can amplify the effects of market volatility on the Fund's share price and may also cause the Fund to liquidate portfolio positions when it would not be advantageous to do so in order to satisfy its obligations. Liquidity Risk - The risk that certain securities may be difficult or impossible to sell at the time and the price that the Fund would like. The Fund may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance. Portfolio Turnover Risk - Due to its investment strategy, the Fund may buy and sell securities frequently. This may result in higher transaction costs and additional capital gains tax liabilities. Small and Medium Capitalization Risk - The smaller and medium capitalization companies in which the Fund invests may be more vulnerable to adverse business or economic events than larger, more established companies. In particular, small companies may have limited product lines, markets and financial resources, and may depend upon a relatively small management group. Therefore, small cap and medium cap stocks may be more volatile than those of larger companies. Small cap stocks may be traded over the counter or listed on an exchange. Loss of money is a risk of investing in the Fund.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk, Narrative22false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Performance InformationfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table, Heading23false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1 and 5 years, and since the Fund's inception, compared with those of a broad measure of market performance. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance, Narrative24false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000006678Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018203Member row primary compact * ~</div>falsefalseBarChart1.jpg<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000006678Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018203Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/BarChartDatafalsefalse020050 - Schedule - Annual Total Returnstruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006678MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000018203MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006678Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. MANAGED VOLATILITY FUND - CLASS Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000018203Memberrr_ProspectusShareClassAxisexplicitMemberSIMT U.S. MANAGED VOLATILITY FUNDSIMT U.S. MANAGED VOLATILITY FUND - CLASS Aiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*7false0rr_AnnualReturn2005rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05780.0578falsefalsefalsetruefalse2truetruefalse0.05380.0538falsefalsefalsetruefalse3truetruefalse0.05780.0578falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.02180.0218falsefalsefalsetruefalse10truetruefalse0.01830.0183falsefalsefalsetruefalse11truetruefalse0.02180.0218falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.06840.0684falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20050rr_AnnualReturn2005truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05780.0578falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20052falseRowprimaryElement*8false0rr_AnnualReturn2006rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.13750.1375falsefalsefalsetruefalse2truetruefalse0.13320.1332falsefalsefalsetruefalse3truetruefalse0.13750.1375falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.04550.0455falsefalsefalsetruefalse10truetruefalse0.04390.0439falsefalsefalsetruefalse11truetruefalse0.04550.0455falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.12340.1234falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20060rr_AnnualReturn2006truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.13750.1375falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20063falseRowprimaryElement*9false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.08270.0827falsefalsefalsetruefalse2truetruefalse0.0790.079falsefalsefalsetruefalse3truetruefalse0.08270.0827falsefalsefalsetruefalse4truetruefalse0.00030.0003falsefalsefalsetruefalse5truetruefalse-0.0039-0.0039falsefalsefalsetruefalse6truetruefalse0.00030.0003falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.04040.0404falsefalsefalsetruefalse10truetruefalse0.03780.0378falsefalsefalsetruefalse11truetruefalse0.04040.0404falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.01650.0165falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20070rr_AnnualReturn2007truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.08270.0827falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20074falseRowprimaryElement*10false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2908-0.2908falsefalsefalsetruefalse2truetruefalse-0.2929-0.2929falsefalsefalsetruefalse3truetruefalse-0.2908-0.2908falsefalsefalsetruefalse4truetruefalse-0.2713-0.2713falsefalsefalsetruefalse5truetruefalse-0.2738-0.2738falsefalsefalsetruefalse6truetruefalse-0.2713-0.2713falsefalsefalsetruefalse7truetruefalse-0.2453-0.2453falsefalsefalsetruefalse8truetruefalse-0.2453-0.2453falsefalsefalsetruefalse9truetruefalse-0.0713-0.0713falsefalsefalsetruefalse10truetruefalse-0.0735-0.0735falsefalsefalsetruefalse11truetruefalse-0.0713-0.0713falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse-0.4116-0.4116falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20080rr_AnnualReturn2008truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2908-0.2908falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20085falseRowprimaryElement*11false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.16240.1624falsefalsefalsetruefalse2truetruefalse0.15850.1585falsefalsefalsetruefalse3truetruefalse0.16240.1624falsefalsefalsetruefalse4truetruefalse0.03890.0389falsefalsefalsetruefalse5truetruefalse0.03560.0356falsefalsefalsetruefalse6truetruefalse0.03890.0389falsefalsefalsetruefalse7truetruefalse0.18250.1825falsefalsefalsetruefalse8truetruefalse0.18250.1825falsefalsefalsetruefalse9truetruefalse0.18480.1848falsefalsefalsetruefalse10truetruefalse0.18110.1811falsefalsefalsetruefalse11truetruefalse0.18480.1848falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.35780.3578falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20090rr_AnnualReturn2009truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.16240.1624falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20096falseRowprimaryElement*12false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14880.1488falsefalsefalsetruefalse2truetruefalse0.14630.1463falsefalsefalsetruefalse3truetruefalse0.14880.1488falsefalsefalsetruefalse4truetruefalse0.07170.0717falsefalsefalsetruefalse5truetruefalse0.0710.071falsefalsefalsetruefalse6truetruefalse0.07170.0717falsefalsefalsetruefalse7truetruefalse0.15210.1521falsefalsefalsetruefalse8truetruefalse0.15210.1521falsefalsefalsetruefalse9truetruefalse0.11010.1101falsefalsefalsetruefalse10truetruefalse0.10880.1088falsefalsefalsetruefalse11truetruefalse0.11010.1101falsefalsefalsetruefalse12truetruefalse0.07520.0752falsefalsefalsetruefalse13truetruefalse0.07520.0752falsefalsefalsetruefalse14truetruefalse0.07520.0752falsefalsefalsetruefalse15truetruefalse0.24070.2407falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20100rr_AnnualReturn2010truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14880.1488falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 201016Annual Total Returns UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006678MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000018203MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to BarChartData.No authoritative reference available.falsefalseBar Chart [Table]25false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Best Quarter: 11.54% (09/30/09) Worst Quarter: -20.35% (12/31/08)</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart, Closing26false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalsePerformance Table, Heading27false0rr_PerformanceTableNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also shouldshow the returns of an appropriate broadbased securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____). For a Fund that provides annual total returns for only one calendar year or for a Fund that does not include the bar chart because it does not have annual returns for a full calendar year, modify, as appropriate, the narrative explanation required by paragraph (c)(2)(i) (e.g., by stating that the information gives some indication of the risks of an investment in the Fund by comparing the Fund's performance with a broad measure of market performance).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iv -Subsection b falsefalsePerformance Table, Narrative28false0rr_AverageAnnualReturnCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 5 -Subsection b falsefalseAverage Annual Returns, Caption29false0rr_PerformanceTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact ck0000804239_S000006678Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018203Member column rr_PerformanceMeasureAxis compact * row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact ck0000804239_S000006678Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018203Member column rr_PerformanceMeasureAxis compact * row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/PerformanceTableDatafalsefalse020060 - Schedule - Average Annual Total Returns {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_AverageAnnualReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse2falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse3falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse4falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse5falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse6falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse7falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse8falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse9falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse10falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse11falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse12falsetruefalse00Class A Return After Taxes on Distribution and Sale of Fund Sharesfalsefalsefalsetruefalse13falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse14falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse15falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse16falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse17falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse18falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse19falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse20falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse21falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse22falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse23falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse24falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse25falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse26falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse27falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse28falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse29falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse30falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse31falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse32falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse33falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse34falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse35falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse36falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse37falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse38falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse39falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse40falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse41falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse42falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse43falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse44falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse45falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse46falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse47falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse48falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse49falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse50falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse51falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse52falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse53falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse54falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse55falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse56falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse57falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse58falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse59falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse60falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse61falsetruefalse00Russell 2500 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse62falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse63falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund SharesfalsefalsefalsetruefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, LabelfalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.14880.1488falsefalsefalsetruefalse2truetruetrue0.16930.1693falsefalsefalsetruefalse3truetruetrue0.14350.1435falsefalsefalsetruefalse4truetruetrue0.09650.0965falsefalsefalsetruefalse5truetruetrue0.14630.1463falsefalsefalsetruefalse6truetruetrue0.16930.1693falsefalsefalsetruefalse7truetruetrue0.14190.1419falsefalsefalsetruefalse8truetruetrue0.09490.0949falsefalsefalsetruefalse9truetruetrue0.14880.1488falsefalsefalsetruefalse10truetruetrue0.16930.1693falsefalsefalsetruefalse11truetruetrue0.14350.1435falsefalsefalsetruefalse12truetruetrue0.09650.0965falsefalsefalsetruefalse13truetruetrue0.07170.0717falsefalsefalsetruefalse14truetruetrue0.10460.1046falsefalsefalsetruefalse15truetruetrue0.12030.1203falsefalsefalsetruefalse16truetruetrue0.07170.0717falsefalsefalsetruefalse17truetruetrue0.04660.0466falsefalsefalsetruefalse18truetruetrue0.07100.0710falsefalsefalsetruefalse19truetruetrue0.10460.1046falsefalsefalsetruefalse20truetruetrue0.12030.1203falsefalsefalsetruefalse21truetruetrue0.07100.0710falsefalsefalsetruefalse22truetruetrue0.04610.0461falsefalsefalsetruefalse23truetruetrue0.07170.0717falsefalsefalsetruefalse24truetruetrue0.10460.1046falsefalsefalsetruefalse25truetruetrue0.12030.1203falsefalsefalsetruefalse26truetruetrue0.07170.0717falsefalsefalsetruefalse27truetruetrue0.04660.0466falsefalsefalsetruefalse28truetruetrue0.15210.1521falsefalsefalsetruefalse29truetruetrue0.16930.1693falsefalsefalsetruefalse30truetruetrue0.14670.1467falsefalsefalsetruefalse31truetruetrue0.09860.0986falsefalsefalsetruefalse32truetruetrue0.15210.1521falsefalsefalsetruefalse33truetruetrue0.16930.1693falsefalsefalsetruefalse34truetruetrue0.14670.1467falsefalsefalsetruefalse35truetruetrue0.09860.0986falsefalsefalsetruefalse36truetruetrue0.11010.1101falsefalsefalsetruefalse37truetruetrue0.06540.0654falsefalsefalsetruefalse38truetruetrue0.09500.0950falsefalsefalsetruefalse39truetruetrue0.07130.0713falsefalsefalsetruefalse40truetruetrue0.10880.1088falsefalsefalsetruefalse41truetruetrue0.06540.0654falsefalsefalsetruefalse42truetruetrue0.09450.0945falsefalsefalsetruefalse43truetruetrue0.07050.0705falsefalsefalsetruefalse44truetruetrue0.11010.1101falsefalsefalsetruefalse45truetruetrue0.06540.0654falsefalsefalsetruefalse46truetruetrue0.09500.0950falsefalsefalsetruefalse47truetruetrue0.07130.0713falsefalsefalsetruefalse48truetruetrue0.07520.0752falsefalsefalsetruefalse49truetruetrue0.06540.0654falsefalsefalsetruefalse50truetruetrue0.05190.0519falsefalsefalsetruefalse51truetruetrue0.04970.0497falsefalsefalsetruefalse52truetruetrue0.07520.0752falsefalsefalsetruefalse53truetruetrue0.06540.0654falsefalsefalsetruefalse54truetruetrue0.05190.0519falsefalsefalsetruefalse55truetruetrue0.04970.0497falsefalsefalsetruefalse56truetruetrue0.07520.0752falsefalsefalsetruefalse57truetruetrue0.06540.0654falsefalsefalsetruefalse58truetruetrue0.05190.0519falsefalsefalsetruefalse59truetruetrue0.04970.0497falsefalsefalsetruefalse60truetruetrue0.24070.2407falsefalsefalsetruefalse61truetruetrue0.26710.2671falsefalsefalsetruefalse62truetruetrue0.23950.2395falsefalsefalsetruefalse63truetruetrue0.15640.1564falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, 1 YearfalseUSDfalsefalse$3falseColumnprimaryElement*5false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition 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Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000018203Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseRussell 3000 Index Returnrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_RRINDEX00010Memberrr_PerformanceMeasureAxisexplicitMemberSIMT U.S. MANAGED VOLATILITY FUNDSIMT U.S. MANAGED VOLATILITY FUND - CLASS ARussell 3000 Index ReturnStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse2truetruetrue0.16930.1693falsefalsefalsetruefalse3truetruetrue0.02740.0274falsefalsefalsetruefalse4truetruetrue0.04560.0456falsefalsefalsetruefalse5falsetruefalse002004-10-312004-10-31falsefalsetruetruefalseOthernanafalsefalseSIMT U.S. MANAGED VOLATILITY FUND - CLASS A Russell 3000 Index 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Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return, Heading33false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment GoalfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment Objective, Heading34false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Capital appreciation with less volatility than the broad U.S. equity markets.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseinvestment Objective, Primary35false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and ExpensesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpense, Heading36false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This table describes the fees and expenses that you may pay if you buy and hold Fund shares.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseExpense, Narrative37false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00SHAREHOLDER FEES (fees paid directly from your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees, Caption38false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000006678Member column rr_ProspectusShareClassAxis compact ck0000804239_C000036885Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000006678Member column rr_ProspectusShareClassAxis compact ck0000804239_C000036885Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/ShareholderFeesDatafalsefalse020010 - Schedule - Shareholder Feestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006678MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000036885MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006678Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. MANAGED VOLATILITY FUND - Class Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000036885Memberrr_ProspectusShareClassAxisexplicitMemberSIMT U.S. MANAGED VOLATILITY FUNDSIMT U.S. MANAGED VOLATILITY FUND - Class Iiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_RedemptionFeeOverRedemptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truetruetrue0.00500.0050[2]falsefalsefalsetruefalse2truetruetrue0.00500.0050[2]falsefalsefalsetruefalse3truetruetrue0.00500.0050[1]falsefalsefalsetruefalse4truetruetrue0.00750.0075[2]falsefalsefalsetruefalse5truetruetrue0.00750.0075[2]falsefalsefalsetruefalse6truetruetrue0.00750.0075[2]falsefalsefalsetruefalse7truetruetrue0.00500.0050[2]falsefalsefalsetruefalse8truetruetrue0.00500.0050[2]falsefalsefalsetruefalse9truetruetrue0.00600.0060[3]falsefalsefalsetruefalse10truetruetrue0.00600.0060[4]falsefalsefalsetruefalse11truetruetrue0.00600.0060[3]falsefalsefalsetruefalse12truetruetrue0.00600.0060[3]falsefalsefalsetruefalse13truetruetrue0.00600.0060[4]falsefalsefalsetruefalse14truetruetrue0.00600.0060[3]falsefalsefalsetruefalse15truetruetrue0.00250.0025[2]falsefalsefalsetruefalse16truetruetrue0.01000.0100[2]falsefalsefalsetruefalseOtherrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph b -Subsection instructions falsefalseRedemption fee0rr_RedemptionFeeOverRedemptiontruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue0.00500.0050falsefalsefalsetruefalseOthernanafalsefalseRedemption fee1(applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $25 million within any thirty (30) day period)11Shareholder Fees UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006678MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000036885MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No authoritative reference available.falsefalseShareholder Fees [Table]39false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses, Caption40false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000006678Member column rr_ProspectusShareClassAxis compact ck0000804239_C000036885Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000006678Member column rr_ProspectusShareClassAxis compact ck0000804239_C000036885Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/OperatingExpensesDatafalsefalse020020 - Schedule - Annual Fund Operating Expensestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006678MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000036885MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006678Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. MANAGED VOLATILITY FUND - Class Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000036885Memberrr_ProspectusShareClassAxisexplicitMemberSIMT U.S. MANAGED VOLATILITY FUNDSIMT U.S. MANAGED VOLATILITY FUND - Class Iiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00650.0065falsefalsefalsetruefalse2truetruetrue0.00650.0065falsefalsefalsetruefalse3truetruetrue0.00650.0065falsefalsefalsetruefalse4truetruetrue0.00650.0065falsefalsefalsetruefalse5truetruetrue0.00650.0065falsefalsefalsetruefalse6truetruetrue0.00650.0065falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00280.0028falsefalsefalsetruefalse10truetruetrue0.00280.0028falsefalsefalsetruefalse11truetruetrue0.00280.0028falsefalsefalsetruefalse12truetruetrue0.00280.0028falsefalsefalsetruefalse13truetruetrue0.00280.0028falsefalsefalsetruefalse14truetruetrue0.00280.0028falsefalsefalsetruefalse15truetruetrue0.01500.0150falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement Fees0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00650.0065falsefalsefalsetruefalseOthernanafalsefalseManagement Fees2falseRowprimaryElement*4false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.000.00falsefalsefalsetruefalse2truetruetrue0.000.00falsefalsefalsetruefalse3truetruetrue0.00250.0025falsefalsefalsetruefalse4truetruetrue0.000.00falsefalsefalsetruefalse5truetruetrue0.000.00falsefalsefalsetruefalse6truetruetrue0.00250.0025falsefalsefalsetruefalse7truetruetrue0.000.00falsefalsefalsetruefalse8truetruetrue0.00250.0025falsefalsefalsetruefalse9truetruetrue0.000.00falsefalsefalsetruefalse10truetruetrue0.000.00falsefalsefalsetruefalse11truetruetrue0.00250.0025falsefalsefalsetruefalse12truetruetrue0.000.00falsefalsefalsetruefalse13truetruetrue0.000.00falsefalsefalsetruefalse14truetruetrue0.00250.0025falsefalsefalsetruefalse15truetruetrue0.000.00falsefalsefalsetruefalse16truetruetrue0.00250.0025falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution (12b-1) Fees0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.000.00falsefalsefalsetruefalseOthernanafalsefalseDistribution (12b-1) Fees3falseRowprimaryElement*5false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00640.0064falsefalsefalsetruefalse2truetruetrue0.00890.0089falsefalsefalsetruefalse3truetruetrue0.00640.0064falsefalsefalsetruefalse4truetruetrue0.00670.0067falsefalsefalsetruefalse5truetruetrue0.00920.0092falsefalsefalsetruefalse6truetruetrue0.00670.0067falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00580.0058falsefalsefalsetruefalse10truetruetrue0.00830.0083falsefalsefalsetruefalse11truetruetrue0.00580.0058falsefalsefalsetruefalse12truetruetrue0.00590.0059falsefalsefalsetruefalse13truetruetrue0.00840.0084falsefalsefalsetruefalse14truetruetrue0.00590.0059falsefalsefalsetruefalse15truetruetrue0.00690.0069[2]falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther Expenses0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00890.0089falsefalsefalsetruefalseOthernanafalsefalseOther Expenses4falseRowprimaryElement*7false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01290.0129falsefalsefalsetruefalse2truetruetrue0.01540.0154falsefalsefalsetruefalse3truetruetrue0.01540.0154falsefalsefalsetruefalse4truetruetrue0.01320.0132falsefalsefalsetruefalse5truetruetrue0.01570.0157falsefalsefalsetruefalse6truetruetrue0.01570.0157falsefalsefalsetruefalse7truetruetrue0.01300.0130falsefalsefalsetruefalse8truetruetrue0.01550.0155falsefalsefalsetruefalse9truetruetrue0.00860.0086falsefalsefalsetruefalse10truetruetrue0.01110.0111falsefalsefalsetruefalse11truetruetrue0.01110.0111falsefalsefalsetruefalse12truetruetrue0.00870.0087falsefalsefalsetruefalse13truetruetrue0.01120.0112falsefalsefalsetruefalse14truetruetrue0.01120.0112falsefalsefalsetruefalse15truetruetrue0.02930.0293falsefalsefalsetruefalse16truetruetrue0.01550.0155falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph d -Subsection instructions falsefalseTotal Annual Fund Operating Expenses0rr_ExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01540.0154falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses14Annual Fund Operating Expenses UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006678MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000036885MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Table]41false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00EXAMPLEfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, Heading42false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and that you sell your shares at the end of each period. The Example also assumes that each year your investment has a 5% return, Fund operating expenses remain the same and you reinvest all dividends and distributions. For purposes of calculating the Example, the Fund's fees are equal to the "Total Annual Fund Operating Expenses" figure in the table above.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative43false0rr_ExpenseExampleByYearCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Although your actual costs and returns might be different, your approximate costs of investing $10,000 in the Fund would be:falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, By Year, Caption44false0rr_ExpenseExampleWithRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000006678Member column rr_ProspectusShareClassAxis compact ck0000804239_C000036885Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000006678Member column rr_ProspectusShareClassAxis compact ck0000804239_C000036885Member row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/ExpenseExamplefalsefalse020030 - Schedule - Expense Example {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue131131falsefalsefalsetruefalse2truefalsetrue157157falsefalsefalsetruefalse3truefalsetrue157157falsefalsefalsetruefalse4truefalsetrue134134falsefalsefalsetruefalse5truefalsetrue160160falsefalsefalsetruefalse6truefalsetrue160160falsefalsefalsetruefalse7truefalsetrue132132falsefalsefalsetruefalse8truefalsetrue158158falsefalsefalsetruefalse9truefalsetrue8888falsefalsefalsetruefalse10truefalsetrue113113falsefalsefalsetruefalse11truefalsetrue113113falsefalsefalsetruefalse12truefalsetrue8989falsefalsefalsetruefalse13truefalsetrue114114falsefalsefalsetruefalse14truefalsetrue114114falsefalsefalsetruefalse15truefalsetrue296296falsefalsefalsetruefalse16truefalsetrue158158falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, With Redemption, 1 YearfalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue409409falsefalsefalsetruefalse2truefalsetrue486486falsefalsefalsetruefalse3truefalsetrue486486falsefalsefalsetruefalse4truefalsetrue418418falsefalsefalsetruefalse5truefalsetrue496496falsefalsefalsetruefalse6truefalsetrue496496falsefalsefalsetruefalse7truefalsetrue412412falsefalsefalsetruefalse8truefalsetrue490490falsefalsefalsetruefalse9truefalsetrue274274falsefalsefalsetruefalse10truefalsetrue353353falsefalsefalsetruefalse11truefalsetrue353353falsefalsefalsetruefalse12truefalsetrue278278falsefalsefalsetruefalse13truefalsetrue356356falsefalsefalsetruefalse14truefalsetrue356356falsefalsefalsetruefalse15truefalsetrue907907falsefalsefalsetruefalse16truefalsetrue490490falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 3 YearsfalseUSDfalsefalse$3falseColumnprimaryElement*5false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue708708falsefalsefalsetruefalse2truefalsetrue839839falsefalsefalsetruefalse3truefalsetrue839839falsefalsefalsetruefalse4truefalsetrue723723falsefalsefalsetruefalse5truefalsetrue855855falsefalsefalsetruefalse6truefalsetrue855855falsefalsefalsetruefalse7truefalsetrue713713falsefalsefalsetruefalse8truefalsetrue845845falsefalsefalsetruefalse9truefalsetrue477477falsefalsefalsetruefalse10truefalsetrue612612falsefalsefalsetruefalse11truefalsetrue612612falsefalsefalsetruefalse12truefalsetrue482482falsefalsefalsetruefalse13truefalsetrue617617falsefalsefalsetruefalse14truefalsetrue617617falsefalsefalsetruefalse15falsefalsetrue00falsefalsefalsetruefalse16truefalsetrue845845falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 5 YearsfalseUSDfalsefalse$4falseColumnprimaryElement*6false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.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:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 10 YearsfalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006678MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000036885MemberRowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006678Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. MANAGED VOLATILITY FUND - Class Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000036885Memberrr_ProspectusShareClassAxisexplicitMemberSIMT U.S. MANAGED VOLATILITY FUNDSIMT U.S. MANAGED VOLATILITY FUND - Class Iiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue157157falsefalsefalsetruefalse2truefalsetrue486486falsefalsefalsetruefalse3truefalsetrue839839falsefalsefalsetruefalse4truefalsetrue18341834falsefalsefalsetruefalseOthernanafalsefalseSIMT U.S. MANAGED VOLATILITY FUND SIMT U.S. MANAGED VOLATILITY FUND - Class I41Expense Example (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006678MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000036885MemberRowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExample.No authoritative reference available.falsefalseExpense Example, With Redemption [Table]45false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00PORTFOLIO TURNOVERfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover, Heading46false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 53% of the average value of its portfolio.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover47false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Investment StrategiesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Heading48false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The U.S. Managed Volatility Fund will typically invest in securities of U.S. companies of all capitalization ranges. These securities may include common stocks, preferred stocks, ETFs and warrants. The Fund uses a multi-manager approach, relying on a number of sub-advisers with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation (SIMC), the Fund's adviser. The Fund is expected to achieve an absolute return of the broad U.S. equity markets, but with a lower absolute volatility. Over the long term, the Fund is expected to achieve a return similar to that of the Russell 3000 Index, but with a lower level of volatility. However, given that the Fund's investment strategy focuses on absolute return and risk, the Fund's sector and market capitalization exposures will typically vary from the index and may cause significant performance deviations relative to the index over shorter-term periods. The Fund seeks to achieve lower volatility by constructing a portfolio of securities that effectively weighs securities based on their total expected risk and return, without regard to market capitalization and industry.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Narrative49false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal RisksfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk, Heading50false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Equity Market Risk - The risk that stock prices will fall over short or extended periods of time. Exchange-Traded Funds (ETFs) Risk - The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio securities. Hedged Strategies Risk - The Fund may employ investment strategies that involve greater risks than the strategies used by typical mutual funds. Although some of the sub-advisers use hedged strategies, there is no assurance that hedged strategies will protect against losses or perform better than non-hedged strategies, and some sub-advisers may use long-only strategies. Investment Style Risk - The risk that securities selected as part of a managed volatility strategy may underperform other segments of the equity markets or the equity markets as a whole. Leverage Risk - The use of leverage can amplify the effects of market volatility on the Fund's share price and may also cause the Fund to liquidate portfolio positions when it would not be advantageous to do so in order to satisfy its obligations. Liquidity Risk - The risk that certain securities may be difficult or impossible to sell at the time and the price that the Fund would like. The Fund may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance. Portfolio Turnover Risk - Due to its investment strategy, the Fund may buy and sell securities frequently. This may result in higher transaction costs and additional capital gains tax liabilities. Small and Medium Capitalization Risk - The smaller and medium capitalization companies in which the Fund invests may be more vulnerable to adverse business or economic events than larger, more established companies. In particular, small companies may have limited product lines, markets and financial resources, and may depend upon a relatively small management group. Therefore, small cap and medium cap stocks may be more volatile than those of larger companies. Small cap stocks may be traded over the counter or listed on an exchange. Loss of money is a risk of investing in the Fund.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk, Narrative51false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Performance InformationfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table, Heading52false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1 and 5 years, and since the Fund's inception, compared with those of a broad measure of market performance. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI. However, the Fund's Class I Shares commenced operations on June 29, 2007. Therefore, performance and average annual total returns for the periods prior to June 29, 2007 are calculated using the performance and average annual total returns of the Fund's Class A Shares, adjusted for the higher expenses of the Class I Shares.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance, Narrative53false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000006678Member column rr_ProspectusShareClassAxis compact ck0000804239_C000036885Member row primary compact * ~</div>falsefalseBarChart2.jpg<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000006678Member column rr_ProspectusShareClassAxis compact ck0000804239_C000036885Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/BarChartDatafalsefalse020050 - Schedule - Annual Total Returnstruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006678MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000036885MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006678Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. MANAGED VOLATILITY FUND - Class Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000036885Memberrr_ProspectusShareClassAxisexplicitMemberSIMT U.S. MANAGED VOLATILITY FUNDSIMT U.S. MANAGED VOLATILITY FUND - Class Iiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*7false0rr_AnnualReturn2005rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05780.0578falsefalsefalsetruefalse2truetruefalse0.05380.0538falsefalsefalsetruefalse3truetruefalse0.05780.0578falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.02180.0218falsefalsefalsetruefalse10truetruefalse0.01830.0183falsefalsefalsetruefalse11truetruefalse0.02180.0218falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.06840.0684falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20050rr_AnnualReturn2005truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05380.0538falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20052falseRowprimaryElement*8false0rr_AnnualReturn2006rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.13750.1375falsefalsefalsetruefalse2truetruefalse0.13320.1332falsefalsefalsetruefalse3truetruefalse0.13750.1375falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.04550.0455falsefalsefalsetruefalse10truetruefalse0.04390.0439falsefalsefalsetruefalse11truetruefalse0.04550.0455falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.12340.1234falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20060rr_AnnualReturn2006truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.13320.1332falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20063falseRowprimaryElement*9false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.08270.0827falsefalsefalsetruefalse2truetruefalse0.0790.079falsefalsefalsetruefalse3truetruefalse0.08270.0827falsefalsefalsetruefalse4truetruefalse0.00030.0003falsefalsefalsetruefalse5truetruefalse-0.0039-0.0039falsefalsefalsetruefalse6truetruefalse0.00030.0003falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.04040.0404falsefalsefalsetruefalse10truetruefalse0.03780.0378falsefalsefalsetruefalse11truetruefalse0.04040.0404falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.01650.0165falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20070rr_AnnualReturn2007truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.0790.079falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20074falseRowprimaryElement*10false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2908-0.2908falsefalsefalsetruefalse2truetruefalse-0.2929-0.2929falsefalsefalsetruefalse3truetruefalse-0.2908-0.2908falsefalsefalsetruefalse4truetruefalse-0.2713-0.2713falsefalsefalsetruefalse5truetruefalse-0.2738-0.2738falsefalsefalsetruefalse6truetruefalse-0.2713-0.2713falsefalsefalsetruefalse7truetruefalse-0.2453-0.2453falsefalsefalsetruefalse8truetruefalse-0.2453-0.2453falsefalsefalsetruefalse9truetruefalse-0.0713-0.0713falsefalsefalsetruefalse10truetruefalse-0.0735-0.0735falsefalsefalsetruefalse11truetruefalse-0.0713-0.0713falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse-0.4116-0.4116falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20080rr_AnnualReturn2008truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2929-0.2929falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20085falseRowprimaryElement*11false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.16240.1624falsefalsefalsetruefalse2truetruefalse0.15850.1585falsefalsefalsetruefalse3truetruefalse0.16240.1624falsefalsefalsetruefalse4truetruefalse0.03890.0389falsefalsefalsetruefalse5truetruefalse0.03560.0356falsefalsefalsetruefalse6truetruefalse0.03890.0389falsefalsefalsetruefalse7truetruefalse0.18250.1825falsefalsefalsetruefalse8truetruefalse0.18250.1825falsefalsefalsetruefalse9truetruefalse0.18480.1848falsefalsefalsetruefalse10truetruefalse0.18110.1811falsefalsefalsetruefalse11truetruefalse0.18480.1848falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.35780.3578falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20090rr_AnnualReturn2009truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.15850.1585falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20096falseRowprimaryElement*12false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14880.1488falsefalsefalsetruefalse2truetruefalse0.14630.1463falsefalsefalsetruefalse3truetruefalse0.14880.1488falsefalsefalsetruefalse4truetruefalse0.07170.0717falsefalsefalsetruefalse5truetruefalse0.0710.071falsefalsefalsetruefalse6truetruefalse0.07170.0717falsefalsefalsetruefalse7truetruefalse0.15210.1521falsefalsefalsetruefalse8truetruefalse0.15210.1521falsefalsefalsetruefalse9truetruefalse0.11010.1101falsefalsefalsetruefalse10truetruefalse0.10880.1088falsefalsefalsetruefalse11truetruefalse0.11010.1101falsefalsefalsetruefalse12truetruefalse0.07520.0752falsefalsefalsetruefalse13truetruefalse0.07520.0752falsefalsefalsetruefalse14truetruefalse0.07520.0752falsefalsefalsetruefalse15truetruefalse0.24070.2407falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20100rr_AnnualReturn2010truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14630.1463falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 201016Annual Total Returns UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006678MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000036885MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to BarChartData.No authoritative reference available.falsefalseBar Chart [Table]54false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Best Quarter: 11.49% (09/30/09) Worst Quarter: -20.35% (12/31/08)</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart, Closing55false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalsePerformance Table, Heading56false0rr_PerformanceTableNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also shouldshow the returns of an appropriate broadbased securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____). For a Fund that provides annual total returns for only one calendar year or for a Fund that does not include the bar chart because it does not have annual returns for a full calendar year, modify, as appropriate, the narrative explanation required by paragraph (c)(2)(i) (e.g., by stating that the information gives some indication of the risks of an investment in the Fund by comparing the Fund's performance with a broad measure of market performance).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iv -Subsection b falsefalsePerformance Table, Narrative57false0rr_AverageAnnualReturnCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. 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Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, Since InceptionfalseUSDfalsefalse$5falseColumnprimaryElement*8false0rr_AverageAnnualReturnInceptionDaterrfalsenadurationNo definition 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Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 4 -Subsection b falsefalseAverage Annual Returns, Inception DatefalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006678MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000036885MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006678Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. MANAGED VOLATILITY FUND - Class Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000036885Memberrr_ProspectusShareClassAxisexplicitMembertruefalseBefore Taxesrr_PerformanceMeasureAxisrr_PerformanceMeasureDomainrr_PerformanceMeasureAxisexplicitMemberSIMT U.S. MANAGED VOLATILITY FUNDSIMT U.S. MANAGED VOLATILITY FUND - Class IBefore Taxesiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class I Return Before TaxesClass I Return Before Taxesfalsefalsefalsetruefalse2truetruetrue0.14630.1463falsefalsefalsetruefalse3truetruetrue0.02800.0280falsefalsefalsetruefalse4truetruetrue0.04490.0449falsefalsefalsetruefalse5falsetruefalse002004-10-282004-10-28[1]falsefalsetruetruefalseOthernanafalsefalseSIMT U.S. MANAGED VOLATILITY FUND - Class I2falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006678MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000036885MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006678Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. MANAGED VOLATILITY FUND - Class Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000036885Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseRussell 3000 Index Returnrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_RRINDEX00010Memberrr_PerformanceMeasureAxisexplicitMemberSIMT U.S. MANAGED VOLATILITY FUNDSIMT U.S. MANAGED VOLATILITY FUND - Class IRussell 3000 Index ReturnStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse2truetruetrue0.16930.1693falsefalsefalsetruefalse3truetruetrue0.02740.0274falsefalsefalsetruefalse4truetruetrue0.04560.0456falsefalsefalsetruefalse5falsetruefalse002004-10-312004-10-31falsefalsetruetruefalseOthernanafalsefalseSIMT U.S. MANAGED VOLATILITY FUND - Class I Russell 3000 Index Return3falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006678MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000036885MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006678Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. MANAGED VOLATILITY FUND - Class Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000036885Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseAfter Taxes on Distributionsrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsMemberrr_PerformanceMeasureAxisexplicitMemberSIMT U.S. MANAGED VOLATILITY FUNDSIMT U.S. MANAGED VOLATILITY FUND - Class IAfter Taxes on DistributionsStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class I Return After Taxes on DistributionsClass I Return After Taxes on Distributionsfalsefalsefalsetruefalse2truetruetrue0.14190.1419falsefalsefalsetruefalse3truetruetrue0.02260.0226falsefalsefalsetruefalse4truetruetrue0.03900.0390falsefalsefalsetruefalse5falsetruefalse002004-10-282004-10-28[1]falsefalsetruetruefalseOthernanafalsefalseSIMT U.S. MANAGED VOLATILITY FUND - Class I After Taxes on Distributions4falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006678MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000036885MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006678Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. MANAGED VOLATILITY FUND - Class Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000036885Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseAfter Taxes on Distributions and Salesrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsAndSalesMemberrr_PerformanceMeasureAxisexplicitMemberSIMT U.S. MANAGED VOLATILITY FUNDSIMT U.S. MANAGED VOLATILITY FUND - Class IAfter Taxes on Distributions and SalesStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund SharesClass I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse2truetruetrue0.09490.0949falsefalsefalsetruefalse3truetruetrue0.02200.0220falsefalsefalsetruefalse4truetruetrue0.03620.0362falsefalsefalsetruefalse5falsetruefalse002004-10-282004-10-28[1]falsefalsetruetruefalseOthernanafalsefalseSIMT U.S. MANAGED VOLATILITY FUND - Class I After Taxes on Distributions and Sales1Index returns are shown from October 31, 2004.54Average Annual Total Returns SIMT U.S. MANAGED VOLATILITY FUNDUnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006678MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000036885MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to PerformanceTableData.No authoritative reference available.falsefalsePerformance [Table]59false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturn1falsefalsefalse00SIMT U.S. MANAGED VOLATILITY FUND | SIMT U.S. MANAGED VOLATILITY FUND - Class GSIMT U.S. MANAGED VOLATILITY FUND | SIMT U.S. MANAGED VOLATILITY FUND - Class Gfalsefalsefalsefalsefalse3falsefalseUSDtruefalse{dei_LegalEntityAxis} : SIMT U.S. MANAGED VOLATILITY FUND {rr_ProspectusShareClassAxis} : SIMT U.S. MANAGED VOLATILITY FUND - Class G 1/29/2010 - 2/4/2011 USD ($) $eol_0001104659-11-005144_STD_372_20110204_0_396770x-9996091_429423x-9996115http://www.sec.gov/CIK0000804239duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseck0000804239_S000006678Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006678Memberdei_LegalEntityAxisexplicitMemberfalsefalseck0000804239_C000073425Memberrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073425Memberrr_ProspectusShareClassAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0iso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseSIMT U.S. MANAGED VOLATILITY FUND | SIMT U.S. MANAGED VOLATILITY FUND - Class G61false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00U.S. MANAGED VOLATILITY FUNDfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return, Heading62false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment GoalfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment Objective, Heading63false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Capital appreciation with less volatility than the broad U.S. equity markets.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseinvestment Objective, Primary64false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and ExpensesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpense, Heading65false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This table describes the fees and expenses that you may pay if you buy and hold Fund shares.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseExpense, Narrative66false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00SHAREHOLDER FEES (fees paid directly from your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees, Caption67false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000006678Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073425Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000006678Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073425Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/ShareholderFeesDatafalsefalse020010 - Schedule - Shareholder Feestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006678MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073425MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006678Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. MANAGED VOLATILITY FUND - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073425Memberrr_ProspectusShareClassAxisexplicitMemberSIMT U.S. MANAGED VOLATILITY FUNDSIMT U.S. MANAGED VOLATILITY FUND - Class Giso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_RedemptionFeeOverRedemptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truetruetrue0.00500.0050[2]falsefalsefalsetruefalse2truetruetrue0.00500.0050[2]falsefalsefalsetruefalse3truetruetrue0.00500.0050[1]falsefalsefalsetruefalse4truetruetrue0.00750.0075[2]falsefalsefalsetruefalse5truetruetrue0.00750.0075[2]falsefalsefalsetruefalse6truetruetrue0.00750.0075[2]falsefalsefalsetruefalse7truetruetrue0.00500.0050[2]falsefalsefalsetruefalse8truetruetrue0.00500.0050[2]falsefalsefalsetruefalse9truetruetrue0.00600.0060[3]falsefalsefalsetruefalse10truetruetrue0.00600.0060[4]falsefalsefalsetruefalse11truetruetrue0.00600.0060[3]falsefalsefalsetruefalse12truetruetrue0.00600.0060[3]falsefalsefalsetruefalse13truetruetrue0.00600.0060[4]falsefalsefalsetruefalse14truetruetrue0.00600.0060[3]falsefalsefalsetruefalse15truetruetrue0.00250.0025[2]falsefalsefalsetruefalse16truetruetrue0.01000.0100[2]falsefalsefalsetruefalseOtherrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph b -Subsection instructions falsefalseRedemption fee0rr_RedemptionFeeOverRedemptiontruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue0.00500.0050falsefalsefalsetruefalseOthernanafalsefalseRedemption fee1(applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $25 million within any thirty (30) day period)11Shareholder Fees UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006678MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073425MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No authoritative reference available.falsefalseShareholder Fees [Table]68false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses, Caption69false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000006678Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073425Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000006678Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073425Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/OperatingExpensesDatafalsefalse020020 - Schedule - Annual Fund Operating Expensestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006678MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073425MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006678Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. MANAGED VOLATILITY FUND - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073425Memberrr_ProspectusShareClassAxisexplicitMemberSIMT U.S. MANAGED VOLATILITY FUNDSIMT U.S. MANAGED VOLATILITY FUND - Class Giso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00650.0065falsefalsefalsetruefalse2truetruetrue0.00650.0065falsefalsefalsetruefalse3truetruetrue0.00650.0065falsefalsefalsetruefalse4truetruetrue0.00650.0065falsefalsefalsetruefalse5truetruetrue0.00650.0065falsefalsefalsetruefalse6truetruetrue0.00650.0065falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00280.0028falsefalsefalsetruefalse10truetruetrue0.00280.0028falsefalsefalsetruefalse11truetruetrue0.00280.0028falsefalsefalsetruefalse12truetruetrue0.00280.0028falsefalsefalsetruefalse13truetruetrue0.00280.0028falsefalsefalsetruefalse14truetruetrue0.00280.0028falsefalsefalsetruefalse15truetruetrue0.01500.0150falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement Fees0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00650.0065falsefalsefalsetruefalseOthernanafalsefalseManagement Fees2falseRowprimaryElement*4false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.000.00falsefalsefalsetruefalse2truetruetrue0.000.00falsefalsefalsetruefalse3truetruetrue0.00250.0025falsefalsefalsetruefalse4truetruetrue0.000.00falsefalsefalsetruefalse5truetruetrue0.000.00falsefalsefalsetruefalse6truetruetrue0.00250.0025falsefalsefalsetruefalse7truetruetrue0.000.00falsefalsefalsetruefalse8truetruetrue0.00250.0025falsefalsefalsetruefalse9truetruetrue0.000.00falsefalsefalsetruefalse10truetruetrue0.000.00falsefalsefalsetruefalse11truetruetrue0.00250.0025falsefalsefalsetruefalse12truetruetrue0.000.00falsefalsefalsetruefalse13truetruetrue0.000.00falsefalsefalsetruefalse14truetruetrue0.00250.0025falsefalsefalsetruefalse15truetruetrue0.000.00falsefalsefalsetruefalse16truetruetrue0.00250.0025falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution (12b-1) Fees0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsetruefalseOthernanafalsefalseDistribution (12b-1) Fees3falseRowprimaryElement*5false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00640.0064falsefalsefalsetruefalse2truetruetrue0.00890.0089falsefalsefalsetruefalse3truetruetrue0.00640.0064falsefalsefalsetruefalse4truetruetrue0.00670.0067falsefalsefalsetruefalse5truetruetrue0.00920.0092falsefalsefalsetruefalse6truetruetrue0.00670.0067falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00580.0058falsefalsefalsetruefalse10truetruetrue0.00830.0083falsefalsefalsetruefalse11truetruetrue0.00580.0058falsefalsefalsetruefalse12truetruetrue0.00590.0059falsefalsefalsetruefalse13truetruetrue0.00840.0084falsefalsefalsetruefalse14truetruetrue0.00590.0059falsefalsefalsetruefalse15truetruetrue0.00690.0069[2]falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther Expenses0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00640.0064falsefalsefalsetruefalseOthernanafalsefalseOther Expenses4falseRowprimaryElement*7false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01290.0129falsefalsefalsetruefalse2truetruetrue0.01540.0154falsefalsefalsetruefalse3truetruetrue0.01540.0154falsefalsefalsetruefalse4truetruetrue0.01320.0132falsefalsefalsetruefalse5truetruetrue0.01570.0157falsefalsefalsetruefalse6truetruetrue0.01570.0157falsefalsefalsetruefalse7truetruetrue0.01300.0130falsefalsefalsetruefalse8truetruetrue0.01550.0155falsefalsefalsetruefalse9truetruetrue0.00860.0086falsefalsefalsetruefalse10truetruetrue0.01110.0111falsefalsefalsetruefalse11truetruetrue0.01110.0111falsefalsefalsetruefalse12truetruetrue0.00870.0087falsefalsefalsetruefalse13truetruetrue0.01120.0112falsefalsefalsetruefalse14truetruetrue0.01120.0112falsefalsefalsetruefalse15truetruetrue0.02930.0293falsefalsefalsetruefalse16truetruetrue0.01550.0155falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph d -Subsection instructions falsefalseTotal Annual Fund Operating Expenses0rr_ExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01540.0154falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses14Annual Fund Operating Expenses UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006678MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073425MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Table]70false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00EXAMPLEfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, Heading71false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and that you sell your shares at the end of each period. The Example also assumes that each year your investment has a 5% return, Fund operating expenses remain the same and you reinvest all dividends and distributions.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative72false0rr_ExpenseExampleByYearCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Although your actual costs and returns might be different, your approximate costs of investing $10,000 in the Fund would be:falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, By Year, Caption73false0rr_ExpenseExampleWithRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000006678Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073425Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000006678Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073425Member row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/ExpenseExamplefalsefalse020030 - Schedule - Expense Example {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue131131falsefalsefalsetruefalse2truefalsetrue157157falsefalsefalsetruefalse3truefalsetrue157157falsefalsefalsetruefalse4truefalsetrue134134falsefalsefalsetruefalse5truefalsetrue160160falsefalsefalsetruefalse6truefalsetrue160160falsefalsefalsetruefalse7truefalsetrue132132falsefalsefalsetruefalse8truefalsetrue158158falsefalsefalsetruefalse9truefalsetrue8888falsefalsefalsetruefalse10truefalsetrue113113falsefalsefalsetruefalse11truefalsetrue113113falsefalsefalsetruefalse12truefalsetrue8989falsefalsefalsetruefalse13truefalsetrue114114falsefalsefalsetruefalse14truefalsetrue114114falsefalsefalsetruefalse15truefalsetrue296296falsefalsefalsetruefalse16truefalsetrue158158falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, With Redemption, 1 YearfalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.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:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 3 YearsfalseUSDfalsefalse$3falseColumnprimaryElement*5false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue708708falsefalsefalsetruefalse2truefalsetrue839839falsefalsefalsetruefalse3truefalsetrue839839falsefalsefalsetruefalse4truefalsetrue723723falsefalsefalsetruefalse5truefalsetrue855855falsefalsefalsetruefalse6truefalsetrue855855falsefalsefalsetruefalse7truefalsetrue713713falsefalsefalsetruefalse8truefalsetrue845845falsefalsefalsetruefalse9truefalsetrue477477falsefalsefalsetruefalse10truefalsetrue612612falsefalsefalsetruefalse11truefalsetrue612612falsefalsefalsetruefalse12truefalsetrue482482falsefalsefalsetruefalse13truefalsetrue617617falsefalsefalsetruefalse14truefalsetrue617617falsefalsefalsetruefalse15falsefalsetrue00falsefalsefalsetruefalse16truefalsetrue845845falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 5 YearsfalseUSDfalsefalse$4falseColumnprimaryElement*6false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.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:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 10 YearsfalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006678MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000073425MemberRowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006678Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. MANAGED VOLATILITY FUND - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073425Memberrr_ProspectusShareClassAxisexplicitMemberSIMT U.S. MANAGED VOLATILITY FUNDSIMT U.S. MANAGED VOLATILITY FUND - Class Giso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue157157falsefalsefalsetruefalse2truefalsetrue486486falsefalsefalsetruefalse3truefalsetrue839839falsefalsefalsetruefalse4truefalsetrue18341834falsefalsefalsetruefalseOthernanafalsefalseSIMT U.S. MANAGED VOLATILITY FUND SIMT U.S. MANAGED VOLATILITY FUND - Class G41Expense Example (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006678MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000073425MemberRowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExample.No authoritative reference available.falsefalseExpense Example, With Redemption [Table]74false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00PORTFOLIO TURNOVERfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover, Heading75false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 53% of the average value of its portfolio.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover76false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Investment StrategiesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Heading77false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The U.S. Managed Volatility Fund will typically invest in securities of U.S. companies of all capitalization ranges. These securities may include common stocks, preferred stocks, ETFs and warrants. The Fund uses a multi-manager approach, relying on a number of sub-advisers with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation (SIMC), the Fund's adviser. The Fund is expected to achieve an absolute return of the broad U.S. equity markets, but with a lower absolute volatility. Over the long term, the Fund is expected to achieve a return similar to that of the Russell 3000 Index, but with a lower level of volatility. However, given that the Fund's investment strategy focuses on absolute return and risk, the Fund's sector and market capitalization exposures will typically vary from the index and may cause significant performance deviations relative to the index over shorter-term periods. The Fund seeks to achieve lower volatility by constructing a portfolio of securities that effectively weighs securities based on their total expected risk and return, without regard to market capitalization and industry.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Narrative78false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal RisksfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk, Heading79false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Derivatives Risk - The Fund's use of futures contracts is subject to market risk, leverage risk, correlation risk and liquidity risk. Leverage risk and liquidity risk are described below. Market risk is the risk that the market value of an investment may move up and down, sometimes rapidly and unpredictably. Correlation risk is the risk that changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index. Each of these risks could cause the Fund to lose more than the principal amount invested in a derivative instrument. Equity Market Risk - The risk that stock prices will fall over short or extended periods of time. Exchange-Traded Funds (ETFs) Risk - The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio securities. Hedged Strategies Risk - The Fund may employ investment strategies that involve greater risks than the strategies used by typical mutual funds, including short sales and derivative transactions. Although some of the sub-advisers use hedged strategies, there is no assurance that hedged strategies will protect against losses or perform better than non-hedged strategies, and some sub-advisers may use long-only strategies. Investment Style Risk - The risk that securities selected as part of a managed volatility strategy may underperform other segments of the equity markets or the equity markets as a whole. Leverage Risk - The use of leverage can amplify the effects of market volatility on the Fund's share price and may also cause the Fund to liquidate portfolio positions when it would not be advantageous to do so in order to satisfy its obligations. Liquidity Risk - The risk that certain securities may be difficult or impossible to sell at the time and the price that the Fund would like. The Fund may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance. Portfolio Turnover Risk - Due to its investment strategy, the Fund may buy and sell securities frequently. This may result in higher transaction costs and additional capital gains tax liabilities. Short Sales Risk - Short sales expose the Fund to the risk that it will be required to buy the security sold short (also known as "covering" the short position) at a time when the security has appreciated in value, thus resulting in a loss to the Fund. Reinvesting proceeds received from short selling may create leverage which can amplify the effects of market volatility on the Fund's share price. Small and Medium Capitalization Risk - The smaller and medium capitalization companies in which the Fund invests may be more vulnerable to adverse business or economic events than larger, more established companies. In particular, small companies may have limited product lines, markets and financial resources, and may depend upon a relatively small management group. Therefore, small cap and medium cap stocks may be more volatile than those of larger companies. Small cap stocks may be traded over the counter or listed on an exchange. Loss of money is a risk of investing in the Fund.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk, Narrative80false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Performance InformationfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table, Heading81false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>As of January 31, 2011, Class G Shares of the Fund had not commenced operations, and did not have a performance history. The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1 and 5 years, and since the Fund's inception, compared with those of a broad measure of market performance. Since Class G Shares are invested in the same portfolio of securities, return for Class G Shares will be substantially similar to those of Class A Shares, shown here, and will differ only to the extent that Class G Shares have higher expenses. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance, Narrative82false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000006678Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073425Member row primary compact * ~</div>falsefalseBarChart3.jpg<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000006678Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073425Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/BarChartDatafalsefalse020050 - Schedule - Annual Total Returnstruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006678MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073425MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006678Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. MANAGED VOLATILITY FUND - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073425Memberrr_ProspectusShareClassAxisexplicitMemberSIMT U.S. MANAGED VOLATILITY FUNDSIMT U.S. MANAGED VOLATILITY FUND - Class Giso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*7false0rr_AnnualReturn2005rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05780.0578falsefalsefalsetruefalse2truetruefalse0.05380.0538falsefalsefalsetruefalse3truetruefalse0.05780.0578falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.02180.0218falsefalsefalsetruefalse10truetruefalse0.01830.0183falsefalsefalsetruefalse11truetruefalse0.02180.0218falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.06840.0684falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20050rr_AnnualReturn2005truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05780.0578falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20052falseRowprimaryElement*8false0rr_AnnualReturn2006rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.13750.1375falsefalsefalsetruefalse2truetruefalse0.13320.1332falsefalsefalsetruefalse3truetruefalse0.13750.1375falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.04550.0455falsefalsefalsetruefalse10truetruefalse0.04390.0439falsefalsefalsetruefalse11truetruefalse0.04550.0455falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.12340.1234falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20060rr_AnnualReturn2006truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.13750.1375falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20063falseRowprimaryElement*9false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.08270.0827falsefalsefalsetruefalse2truetruefalse0.0790.079falsefalsefalsetruefalse3truetruefalse0.08270.0827falsefalsefalsetruefalse4truetruefalse0.00030.0003falsefalsefalsetruefalse5truetruefalse-0.0039-0.0039falsefalsefalsetruefalse6truetruefalse0.00030.0003falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.04040.0404falsefalsefalsetruefalse10truetruefalse0.03780.0378falsefalsefalsetruefalse11truetruefalse0.04040.0404falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.01650.0165falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20070rr_AnnualReturn2007truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.08270.0827falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20074falseRowprimaryElement*10false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2908-0.2908falsefalsefalsetruefalse2truetruefalse-0.2929-0.2929falsefalsefalsetruefalse3truetruefalse-0.2908-0.2908falsefalsefalsetruefalse4truetruefalse-0.2713-0.2713falsefalsefalsetruefalse5truetruefalse-0.2738-0.2738falsefalsefalsetruefalse6truetruefalse-0.2713-0.2713falsefalsefalsetruefalse7truetruefalse-0.2453-0.2453falsefalsefalsetruefalse8truetruefalse-0.2453-0.2453falsefalsefalsetruefalse9truetruefalse-0.0713-0.0713falsefalsefalsetruefalse10truetruefalse-0.0735-0.0735falsefalsefalsetruefalse11truetruefalse-0.0713-0.0713falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse-0.4116-0.4116falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20080rr_AnnualReturn2008truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2908-0.2908falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20085falseRowprimaryElement*11false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.16240.1624falsefalsefalsetruefalse2truetruefalse0.15850.1585falsefalsefalsetruefalse3truetruefalse0.16240.1624falsefalsefalsetruefalse4truetruefalse0.03890.0389falsefalsefalsetruefalse5truetruefalse0.03560.0356falsefalsefalsetruefalse6truetruefalse0.03890.0389falsefalsefalsetruefalse7truetruefalse0.18250.1825falsefalsefalsetruefalse8truetruefalse0.18250.1825falsefalsefalsetruefalse9truetruefalse0.18480.1848falsefalsefalsetruefalse10truetruefalse0.18110.1811falsefalsefalsetruefalse11truetruefalse0.18480.1848falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.35780.3578falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20090rr_AnnualReturn2009truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.16240.1624falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20096falseRowprimaryElement*12false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14880.1488falsefalsefalsetruefalse2truetruefalse0.14630.1463falsefalsefalsetruefalse3truetruefalse0.14880.1488falsefalsefalsetruefalse4truetruefalse0.07170.0717falsefalsefalsetruefalse5truetruefalse0.0710.071falsefalsefalsetruefalse6truetruefalse0.07170.0717falsefalsefalsetruefalse7truetruefalse0.15210.1521falsefalsefalsetruefalse8truetruefalse0.15210.1521falsefalsefalsetruefalse9truetruefalse0.11010.1101falsefalsefalsetruefalse10truetruefalse0.10880.1088falsefalsefalsetruefalse11truetruefalse0.11010.1101falsefalsefalsetruefalse12truetruefalse0.07520.0752falsefalsefalsetruefalse13truetruefalse0.07520.0752falsefalsefalsetruefalse14truetruefalse0.07520.0752falsefalsefalsetruefalse15truetruefalse0.24070.2407falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20100rr_AnnualReturn2010truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14880.1488falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 201016Annual Total Returns UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006678MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073425MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to BarChartData.No authoritative reference available.falsefalseBar Chart [Table]83false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Best Quarter: 11.54% (09/30/09) Worst Quarter: -20.35% (12/31/08)</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart, Closing84false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalsePerformance Table, Heading85false0rr_PerformanceTableNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This table compares the Fund's average annual total returns for Class A Shares to those of the Russell 3000 Index. The Russell 3000 Index measures the performance of the largest 3,000 U.S. companies representing approximately 98% of the investable U.S. equity market. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also shouldshow the returns of an appropriate broadbased securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____). For a Fund that provides annual total returns for only one calendar year or for a Fund that does not include the bar chart because it does not have annual returns for a full calendar year, modify, as appropriate, the narrative explanation required by paragraph (c)(2)(i) (e.g., by stating that the information gives some indication of the risks of an investment in the Fund by comparing the Fund's performance with a broad measure of market performance).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iv -Subsection b falsefalsePerformance Table, Narrative86false0rr_AverageAnnualReturnCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 5 -Subsection b falsefalseAverage Annual Returns, Caption87false0rr_PerformanceTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact ck0000804239_S000006678Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073425Member column rr_PerformanceMeasureAxis compact * row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact ck0000804239_S000006678Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073425Member column rr_PerformanceMeasureAxis compact * row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/PerformanceTableDatafalsefalse020060 - Schedule - Average Annual Total Returns {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_AverageAnnualReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse2falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse3falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse4falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse5falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse6falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or 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Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 4 -Subsection b falsefalseAverage Annual Returns, Inception DatefalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006678MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000073425MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006678Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. MANAGED VOLATILITY FUND - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073425Memberrr_ProspectusShareClassAxisexplicitMembertruefalseBefore Taxesrr_PerformanceMeasureAxisrr_PerformanceMeasureDomainrr_PerformanceMeasureAxisexplicitMemberSIMT U.S. MANAGED VOLATILITY FUNDSIMT U.S. MANAGED VOLATILITY FUND - Class GBefore 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Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073425Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseRussell 3000 Index Returnrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_RRINDEX00010Memberrr_PerformanceMeasureAxisexplicitMemberSIMT U.S. MANAGED VOLATILITY FUNDSIMT U.S. MANAGED VOLATILITY FUND - Class GRussell 3000 Index ReturnStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse2truetruetrue0.16930.1693falsefalsefalsetruefalse3truetruetrue0.02740.0274falsefalsefalsetruefalse4truetruetrue0.04560.0456falsefalsefalsetruefalse5falsetruefalse002004-10-312004-10-31falsefalsetruetruefalseOthernanafalsefalseSIMT U.S. MANAGED VOLATILITY FUND - Class G Russell 3000 Index 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Salesrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsAndSalesMemberrr_PerformanceMeasureAxisexplicitMemberSIMT U.S. MANAGED VOLATILITY FUNDSIMT U.S. MANAGED VOLATILITY FUND - Class GAfter Taxes on Distributions and SalesStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class A Return After Taxes on Distribution and Sale of Fund SharesClass A Return After Taxes on Distribution and Sale of Fund Sharesfalsefalsefalsetruefalse2truetruetrue0.09650.0965falsefalsefalsetruefalse3truetruetrue0.02500.0250falsefalsefalsetruefalse4truetruetrue0.03980.0398falsefalsefalsetruefalse5falsetruefalse002004-10-282004-10-28[1]falsefalsetruetruefalseOthernanafalsefalseSIMT U.S. MANAGED VOLATILITY FUND - Class G After Taxes on Distributions and Sales1Index returns are shown from October 31, 2004.54Average Annual Total Returns SIMT U.S. MANAGED VOLATILITY FUNDUnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006678MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000073425MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to PerformanceTableData.No authoritative reference available.falsefalsePerformance [Table]88false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturn1falsefalsefalse00SIMT GLOBAL MANAGED VOLATILITY FUND | SIMT GLOBAL MANAGED VOLATILITY FUND - CLASS A-SIMT GLOBAL MANAGED VOLATILITY FUNDSIMT GLOBAL MANAGED VOLATILITY FUND | SIMT GLOBAL MANAGED VOLATILITY FUND - CLASS A-SIMT GLOBAL MANAGED VOLATILITY FUNDfalsefalsefalsefalsefalse4falsefalseUSDtruefalse{dei_LegalEntityAxis} : SIMT GLOBAL MANAGED VOLATILITY FUND {rr_ProspectusShareClassAxis} : SIMT GLOBAL MANAGED VOLATILITY FUND - CLASS A-SIMT GLOBAL MANAGED VOLATILITY FUND 1/29/2010 - 2/4/2011 USD ($) $eol_0001104659-11-005144_STD_372_20110204_0_396770x-9996089_429423x-9996140http://www.sec.gov/CIK0000804239duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseck0000804239_S000010830Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000010830Memberdei_LegalEntityAxisexplicitMemberfalsefalseck0000804239_C000030063Memberrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000030063Memberrr_ProspectusShareClassAxisexplicitMemberiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170pureStandardhttp://www.xbrl.org/2003/instancepure0USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseSIMT GLOBAL MANAGED VOLATILITY FUND | SIMT GLOBAL MANAGED VOLATILITY FUND - CLASS A-SIMT GLOBAL MANAGED VOLATILITY FUND90false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00GLOBAL MANAGED VOLATILITY FUNDfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return, Heading91false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment GoalfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment Objective, Heading92false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Capital appreciation with less volatility than the broad global equity markets.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseinvestment Objective, Primary93false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and ExpensesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpense, Heading94false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This table describes the fees and expenses that you may pay if you buy and hold Fund shares.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseExpense, Narrative95false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00SHAREHOLDER FEES (fees paid directly from your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees, Caption96false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000030063Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000030063Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/ShareholderFeesDatafalsefalse020010 - Schedule - Shareholder Feestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000010830MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000030063MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT GLOBAL MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000010830Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT GLOBAL MANAGED VOLATILITY FUND - CLASS A-SIMT GLOBAL MANAGED VOLATILITY FUNDrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000030063Memberrr_ProspectusShareClassAxisexplicitMemberSIMT GLOBAL MANAGED VOLATILITY FUNDSIMT GLOBAL MANAGED VOLATILITY FUND - CLASS A-SIMT GLOBAL MANAGED VOLATILITY FUNDiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_RedemptionFeeOverRedemptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truetruetrue0.00500.0050[2]falsefalsefalsetruefalse2truetruetrue0.00500.0050[2]falsefalsefalsetruefalse3truetruetrue0.00500.0050[1]falsefalsefalsetruefalse4truetruetrue0.00750.0075[2]falsefalsefalsetruefalse5truetruetrue0.00750.0075[2]falsefalsefalsetruefalse6truetruetrue0.00750.0075[2]falsefalsefalsetruefalse7truetruetrue0.00500.0050[2]falsefalsefalsetruefalse8truetruetrue0.00500.0050[2]falsefalsefalsetruefalse9truetruetrue0.00600.0060[3]falsefalsefalsetruefalse10truetruetrue0.00600.0060[4]falsefalsefalsetruefalse11truetruetrue0.00600.0060[3]falsefalsefalsetruefalse12truetruetrue0.00600.0060[3]falsefalsefalsetruefalse13truetruetrue0.00600.0060[4]falsefalsefalsetruefalse14truetruetrue0.00600.0060[3]falsefalsefalsetruefalse15truetruetrue0.00250.0025[2]falsefalsefalsetruefalse16truetruetrue0.01000.0100[2]falsefalsefalsetruefalseOtherrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph b -Subsection instructions falsefalseRedemption fee0rr_RedemptionFeeOverRedemptiontruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue0.00750.0075falsefalsefalsetruefalseOthernanafalsefalseRedemption fee1(applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $25 million within any thirty (30) day period)11Shareholder Fees UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000010830MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000030063MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No authoritative reference available.falsefalseShareholder Fees [Table]97false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses, Caption98false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000030063Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000030063Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/OperatingExpensesDatafalsefalse020020 - Schedule - Annual Fund Operating Expensestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000010830MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000030063MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT GLOBAL MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000010830Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT GLOBAL MANAGED VOLATILITY FUND - CLASS A-SIMT GLOBAL MANAGED VOLATILITY FUNDrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000030063Memberrr_ProspectusShareClassAxisexplicitMemberSIMT GLOBAL MANAGED VOLATILITY FUNDSIMT GLOBAL MANAGED VOLATILITY FUND - CLASS A-SIMT GLOBAL MANAGED VOLATILITY FUNDiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00650.0065falsefalsefalsetruefalse2truetruetrue0.00650.0065falsefalsefalsetruefalse3truetruetrue0.00650.0065falsefalsefalsetruefalse4truetruetrue0.00650.0065falsefalsefalsetruefalse5truetruetrue0.00650.0065falsefalsefalsetruefalse6truetruetrue0.00650.0065falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00280.0028falsefalsefalsetruefalse10truetruetrue0.00280.0028falsefalsefalsetruefalse11truetruetrue0.00280.0028falsefalsefalsetruefalse12truetruetrue0.00280.0028falsefalsefalsetruefalse13truetruetrue0.00280.0028falsefalsefalsetruefalse14truetruetrue0.00280.0028falsefalsefalsetruefalse15truetruetrue0.01500.0150falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement Fees0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00650.0065falsefalsefalsetruefalseOthernanafalsefalseManagement Fees2falseRowprimaryElement*4false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.000.00falsefalsefalsetruefalse2truetruetrue0.000.00falsefalsefalsetruefalse3truetruetrue0.00250.0025falsefalsefalsetruefalse4truetruetrue0.000.00falsefalsefalsetruefalse5truetruetrue0.000.00falsefalsefalsetruefalse6truetruetrue0.00250.0025falsefalsefalsetruefalse7truetruetrue0.000.00falsefalsefalsetruefalse8truetruetrue0.00250.0025falsefalsefalsetruefalse9truetruetrue0.000.00falsefalsefalsetruefalse10truetruetrue0.000.00falsefalsefalsetruefalse11truetruetrue0.00250.0025falsefalsefalsetruefalse12truetruetrue0.000.00falsefalsefalsetruefalse13truetruetrue0.000.00falsefalsefalsetruefalse14truetruetrue0.00250.0025falsefalsefalsetruefalse15truetruetrue0.000.00falsefalsefalsetruefalse16truetruetrue0.00250.0025falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution (12b-1) Fees0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.000.00falsefalsefalsetruefalseOthernanafalsefalseDistribution (12b-1) Fees3falseRowprimaryElement*5false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00640.0064falsefalsefalsetruefalse2truetruetrue0.00890.0089falsefalsefalsetruefalse3truetruetrue0.00640.0064falsefalsefalsetruefalse4truetruetrue0.00670.0067falsefalsefalsetruefalse5truetruetrue0.00920.0092falsefalsefalsetruefalse6truetruetrue0.00670.0067falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00580.0058falsefalsefalsetruefalse10truetruetrue0.00830.0083falsefalsefalsetruefalse11truetruetrue0.00580.0058falsefalsefalsetruefalse12truetruetrue0.00590.0059falsefalsefalsetruefalse13truetruetrue0.00840.0084falsefalsefalsetruefalse14truetruetrue0.00590.0059falsefalsefalsetruefalse15truetruetrue0.00690.0069[2]falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther Expenses0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00670.0067falsefalsefalsetruefalseOthernanafalsefalseOther Expenses4falseRowprimaryElement*7false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01290.0129falsefalsefalsetruefalse2truetruetrue0.01540.0154falsefalsefalsetruefalse3truetruetrue0.01540.0154falsefalsefalsetruefalse4truetruetrue0.01320.0132falsefalsefalsetruefalse5truetruetrue0.01570.0157falsefalsefalsetruefalse6truetruetrue0.01570.0157falsefalsefalsetruefalse7truetruetrue0.01300.0130falsefalsefalsetruefalse8truetruetrue0.01550.0155falsefalsefalsetruefalse9truetruetrue0.00860.0086falsefalsefalsetruefalse10truetruetrue0.01110.0111falsefalsefalsetruefalse11truetruetrue0.01110.0111falsefalsefalsetruefalse12truetruetrue0.00870.0087falsefalsefalsetruefalse13truetruetrue0.01120.0112falsefalsefalsetruefalse14truetruetrue0.01120.0112falsefalsefalsetruefalse15truetruetrue0.02930.0293falsefalsefalsetruefalse16truetruetrue0.01550.0155falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph d -Subsection instructions falsefalseTotal Annual Fund Operating Expenses0rr_ExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01320.0132falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses14Annual Fund Operating Expenses UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000010830MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000030063MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Table]99false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00EXAMPLEfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, Heading100false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and that you sell your shares at the end of each period. The Example also assumes that each year your investment has a 5% return, Fund operating expenses remain the same and you reinvest all dividends and distributions.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative101false0rr_ExpenseExampleByYearCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Although your actual costs and returns might be different, your approximate costs of investing $10,000 in the Fund would be:falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, By Year, Caption102false0rr_ExpenseExampleWithRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000030063Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000030063Member row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/ExpenseExamplefalsefalse020030 - Schedule - Expense Example {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue131131falsefalsefalsetruefalse2truefalsetrue157157falsefalsefalsetruefalse3truefalsetrue157157falsefalsefalsetruefalse4truefalsetrue134134falsefalsefalsetruefalse5truefalsetrue160160falsefalsefalsetruefalse6truefalsetrue160160falsefalsefalsetruefalse7truefalsetrue132132falsefalsefalsetruefalse8truefalsetrue158158falsefalsefalsetruefalse9truefalsetrue8888falsefalsefalsetruefalse10truefalsetrue113113falsefalsefalsetruefalse11truefalsetrue113113falsefalsefalsetruefalse12truefalsetrue8989falsefalsefalsetruefalse13truefalsetrue114114falsefalsefalsetruefalse14truefalsetrue114114falsefalsefalsetruefalse15truefalsetrue296296falsefalsefalsetruefalse16truefalsetrue158158falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, With Redemption, 1 YearfalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.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:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 3 YearsfalseUSDfalsefalse$3falseColumnprimaryElement*5false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue708708falsefalsefalsetruefalse2truefalsetrue839839falsefalsefalsetruefalse3truefalsetrue839839falsefalsefalsetruefalse4truefalsetrue723723falsefalsefalsetruefalse5truefalsetrue855855falsefalsefalsetruefalse6truefalsetrue855855falsefalsefalsetruefalse7truefalsetrue713713falsefalsefalsetruefalse8truefalsetrue845845falsefalsefalsetruefalse9truefalsetrue477477falsefalsefalsetruefalse10truefalsetrue612612falsefalsefalsetruefalse11truefalsetrue612612falsefalsefalsetruefalse12truefalsetrue482482falsefalsefalsetruefalse13truefalsetrue617617falsefalsefalsetruefalse14truefalsetrue617617falsefalsefalsetruefalse15falsefalsetrue00falsefalsefalsetruefalse16truefalsetrue845845falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 5 YearsfalseUSDfalsefalse$4falseColumnprimaryElement*6false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.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:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 10 YearsfalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000010830MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000030063MemberRowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT GLOBAL MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000010830Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT GLOBAL MANAGED VOLATILITY FUND - CLASS A-SIMT GLOBAL MANAGED VOLATILITY FUNDrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000030063Memberrr_ProspectusShareClassAxisexplicitMemberSIMT GLOBAL MANAGED VOLATILITY FUNDSIMT GLOBAL MANAGED VOLATILITY FUND - CLASS A-SIMT GLOBAL MANAGED VOLATILITY FUNDiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue134134falsefalsefalsetruefalse2truefalsetrue418418falsefalsefalsetruefalse3truefalsetrue723723falsefalsefalsetruefalse4truefalsetrue15901590falsefalsefalsetruefalseOthernanafalsefalseSIMT GLOBAL MANAGED VOLATILITY FUND SIMT GLOBAL MANAGED VOLATILITY FUND - CLASS A-SIMT GLOBAL MANAGED VOLATILITY FUND41Expense Example (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000010830MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000030063MemberRowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExample.No authoritative reference available.falsefalseExpense Example, With Redemption [Table]103false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00PORTFOLIO TURNOVERfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover, Heading104false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 91% of the average value of its portfolio.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover105false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Investment StrategiesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Heading106false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The Global Managed Volatility Fund will typically invest in securities of U.S. and foreign companies of all capitalization ranges. These securities may include common stocks, preferred stocks, warrants, and ETFs. The Fund also may use futures contracts and forwards. Under normal circumstances, the Fund will invest in at least three countries outside of the U.S., but will typically invest much more broadly. It is expected that at least 40% of the Fund's assets will be invested in non-U.S. securities. The Fund will invest primarily in companies located in developed countries, but may also invest in companies located in emerging markets. The Fund uses a multi-manager approach, relying on a number of sub-advisers with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation (SIMC), the Fund's adviser. This approach is intended to manage the risk characteristics of the Fund. The Fund is expected to achieve an absolute return of the broad global equity markets, but with a lower absolute volatility. Over the long term, the Fund is expected to achieve a return similar to that of the MSCI World Equity Index, but with a lower level of volatility. However, given that the Fund's investment strategy focuses on absolute return and risk, the Fund's country, sector and market capitalization exposures will typically vary from the index and may cause significant performance deviations relative to the index over shorter-term periods. The Fund seeks to achieve lower volatility by constructing a portfolio of securities that the sub-advisers believe would produce a less volatile return stream to the market. Each sub-adviser effectively weighs securities based on their total expected risk and return, without regard to market capitalization and industry. In managing the Fund's currency exposure for foreign securities, the Fund may buy and sell futures or forward contracts on currencies for hedging purposes.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Narrative107false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal RisksfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk, Heading108false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Credit Risk - The risk that the issuer of a security, or the counterparty to a contract, will default or otherwise become unable to honor a financial obligation. Currency Risk - Due to the Fund's passive positions in currencies, its investments may fluctuate in response to broader macroeconomic risks than if it invested only in equity securities. Derivatives Risk - The Fund's use of futures contracts and forward contracts is subject to market risk, leverage risk, correlation risk and liquidity risk. Leverage risk and liquidity risk are described below. Market risk is the risk that the market value of an investment may move up and down, sometimes rapidly and unpredictably. Correlation risk is the risk that changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index. The Fund's use of forward contracts is also subject to credit risk and valuation risk. Valuation risk is the risk that the derivative may be difficult to value and/or valued incorrectly. Credit risk is described above. Each of these risks could cause the Fund to lose more than the principal amount invested in a derivative instrument. Equity Market Risk - The risk that stock prices will fall over short or extended periods of time. Exchange-Traded Funds (ETFs) Risk - The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio securities. Foreign Investment/Emerging Markets Risk - The risk that non-U.S. securities may be subject to additional risks due to, among other things, political, social and economic developments abroad, currency movements, and different legal, regulatory and tax environments. These additional risks may be heightened with respect to emerging market countries since political turmoil and rapid changes in economic conditions are more likely to occur in these countries. Hedged Strategies Risk - The Fund may employ investment strategies that involve greater risks than the strategies used by typical mutual funds, including derivative transactions. Although some of the sub-advisers use hedged strategies, there is no assurance that hedged strategies will protect against losses or perform better than non-hedged strategies, and some sub-advisers may use long-only strategies. Investment Style Risk - The risk that securities selected as part of a managed volatility strategy may underperform other segments of the equity markets or the equity markets as a whole. Leverage Risk - The use of leverage can amplify the effects of market volatility on the Fund's share price and may also cause the Fund to liquidate portfolio positions when it would not be advantageous to do so in order to satisfy its obligations. Liquidity Risk - The risk that certain securities may be difficult or impossible to sell at the time and the price that the Fund would like. The Fund may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance. Portfolio Turnover Risk - Due to its investment strategy, the Fund may buy and sell securities frequently. This may result in higher transaction costs and additional capital gains tax liabilities. Small and Medium Capitalization Risk - The smaller and medium capitalization companies in which the Fund invests may be more vulnerable to adverse business or economic events than larger, more established companies. In particular, small companies may have limited product lines, markets and financial resources, and may depend upon a relatively small management group. Therefore, small cap and medium cap stocks may be more volatile than those of larger companies. Small cap stocks may be traded over the counter or listed on an exchange. Loss of money is a risk of investing in the Fund.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk, Narrative109false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Performance InformationfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table, Heading110false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1 year, and since the Fund's inception, compared with those of a broad measure of market performance. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance, Narrative111false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000030063Member row primary compact * ~</div>falsefalseBarChart4.jpg<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000030063Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/BarChartDatafalsefalse020050 - Schedule - Annual Total Returnstruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000010830MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000030063MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT GLOBAL MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000010830Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT GLOBAL MANAGED VOLATILITY FUND - CLASS A-SIMT GLOBAL MANAGED VOLATILITY FUNDrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000030063Memberrr_ProspectusShareClassAxisexplicitMemberSIMT GLOBAL MANAGED VOLATILITY FUNDSIMT GLOBAL MANAGED VOLATILITY FUND - CLASS A-SIMT GLOBAL MANAGED VOLATILITY FUNDiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*9false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.08270.0827falsefalsefalsetruefalse2truetruefalse0.0790.079falsefalsefalsetruefalse3truetruefalse0.08270.0827falsefalsefalsetruefalse4truetruefalse0.00030.0003falsefalsefalsetruefalse5truetruefalse-0.0039-0.0039falsefalsefalsetruefalse6truetruefalse0.00030.0003falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.04040.0404falsefalsefalsetruefalse10truetruefalse0.03780.0378falsefalsefalsetruefalse11truetruefalse0.04040.0404falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.01650.0165falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20070rr_AnnualReturn2007truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.00030.0003falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20072falseRowprimaryElement*10false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2908-0.2908falsefalsefalsetruefalse2truetruefalse-0.2929-0.2929falsefalsefalsetruefalse3truetruefalse-0.2908-0.2908falsefalsefalsetruefalse4truetruefalse-0.2713-0.2713falsefalsefalsetruefalse5truetruefalse-0.2738-0.2738falsefalsefalsetruefalse6truetruefalse-0.2713-0.2713falsefalsefalsetruefalse7truetruefalse-0.2453-0.2453falsefalsefalsetruefalse8truetruefalse-0.2453-0.2453falsefalsefalsetruefalse9truetruefalse-0.0713-0.0713falsefalsefalsetruefalse10truetruefalse-0.0735-0.0735falsefalsefalsetruefalse11truetruefalse-0.0713-0.0713falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse-0.4116-0.4116falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20080rr_AnnualReturn2008truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2713-0.2713falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20083falseRowprimaryElement*11false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.16240.1624falsefalsefalsetruefalse2truetruefalse0.15850.1585falsefalsefalsetruefalse3truetruefalse0.16240.1624falsefalsefalsetruefalse4truetruefalse0.03890.0389falsefalsefalsetruefalse5truetruefalse0.03560.0356falsefalsefalsetruefalse6truetruefalse0.03890.0389falsefalsefalsetruefalse7truetruefalse0.18250.1825falsefalsefalsetruefalse8truetruefalse0.18250.1825falsefalsefalsetruefalse9truetruefalse0.18480.1848falsefalsefalsetruefalse10truetruefalse0.18110.1811falsefalsefalsetruefalse11truetruefalse0.18480.1848falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.35780.3578falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20090rr_AnnualReturn2009truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.03890.0389falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20094falseRowprimaryElement*12false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14880.1488falsefalsefalsetruefalse2truetruefalse0.14630.1463falsefalsefalsetruefalse3truetruefalse0.14880.1488falsefalsefalsetruefalse4truetruefalse0.07170.0717falsefalsefalsetruefalse5truetruefalse0.0710.071falsefalsefalsetruefalse6truetruefalse0.07170.0717falsefalsefalsetruefalse7truetruefalse0.15210.1521falsefalsefalsetruefalse8truetruefalse0.15210.1521falsefalsefalsetruefalse9truetruefalse0.11010.1101falsefalsefalsetruefalse10truetruefalse0.10880.1088falsefalsefalsetruefalse11truetruefalse0.11010.1101falsefalsefalsetruefalse12truetruefalse0.07520.0752falsefalsefalsetruefalse13truetruefalse0.07520.0752falsefalsefalsetruefalse14truetruefalse0.07520.0752falsefalsefalsetruefalse15truetruefalse0.24070.2407falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20100rr_AnnualReturn2010truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.07170.0717falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 201014Annual Total Returns UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000010830MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000030063MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to BarChartData.No authoritative reference available.falsefalseBar Chart [Table]112false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Best Quarter: 7.57% (09/30/09) Worst Quarter: -15.33% (12/31/08)</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart, Closing113false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalsePerformance Table, Heading114false0rr_PerformanceTableNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This table compares the Fund's average annual total returns for Class A Shares to those of a broad-based index and the MSCI World Minimum Volatility Index, 100% Hedged to USD, which is a secondary index designed to serve as a transparent and relevant benchmark for managed volatility equity strategies across the developed market world. The index aims to reflect the performance characteristics of a minimum-variance or managed volatility equity strategy, focused on absolute return and volatility with the lowest absolute risk. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also shouldshow the returns of an appropriate broadbased securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____). For a Fund that provides annual total returns for only one calendar year or for a Fund that does not include the bar chart because it does not have annual returns for a full calendar year, modify, as appropriate, the narrative explanation required by paragraph (c)(2)(i) (e.g., by stating that the information gives some indication of the risks of an investment in the Fund by comparing the Fund's performance with a broad measure of market performance).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iv -Subsection b falsefalsePerformance Table, Narrative115false0rr_AverageAnnualReturnCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 5 -Subsection b falsefalseAverage Annual Returns, Caption116false0rr_PerformanceTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000030063Member column rr_PerformanceMeasureAxis compact * row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000030063Member column rr_PerformanceMeasureAxis compact * row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/PerformanceTableDatafalsefalse020060 - Schedule - Average Annual Total Returns {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_AverageAnnualReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse2falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse3falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse4falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse5falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse6falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse7falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse8falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse9falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse10falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse11falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse12falsetruefalse00Class A Return After Taxes on Distribution and Sale of Fund Sharesfalsefalsefalsetruefalse13falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse14falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse15falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse16falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse17falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse18falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse19falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse20falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse21falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse22falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse23falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse24falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse25falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse26falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse27falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse28falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse29falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse30falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse31falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse32falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse33falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse34falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse35falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund 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FUNDUnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000010830MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000030063MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to PerformanceTableData.No authoritative reference available.falsefalsePerformance [Table]117false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturn1falsefalsefalse00SIMT GLOBAL MANAGED VOLATILITY FUND | SIMT GLOBAL MANAGED VOLATILITY FUND - Class ISIMT GLOBAL MANAGED VOLATILITY FUND | SIMT GLOBAL MANAGED VOLATILITY FUND - Class Ifalsefalsefalsefalsefalse5falsefalseUSDtruefalse{dei_LegalEntityAxis} : SIMT GLOBAL MANAGED VOLATILITY FUND {rr_ProspectusShareClassAxis} : SIMT GLOBAL MANAGED VOLATILITY FUND - Class I 1/29/2010 - 2/4/2011 USD ($) 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Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return, Heading120false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment GoalfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment Objective, Heading121false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Capital appreciation with less volatility than the broad global equity markets.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseinvestment Objective, Primary122false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and ExpensesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpense, Heading123false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This table describes the fees and expenses that you may pay if you buy and hold Fund shares.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseExpense, Narrative124false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00SHAREHOLDER FEES (fees paid directly from your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees, Caption125false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000036887Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000036887Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/ShareholderFeesDatafalsefalse020010 - Schedule - Shareholder Feestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000010830MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000036887MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT GLOBAL MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000010830Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT GLOBAL MANAGED VOLATILITY FUND - Class Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000036887Memberrr_ProspectusShareClassAxisexplicitMemberSIMT GLOBAL MANAGED VOLATILITY FUNDSIMT GLOBAL MANAGED VOLATILITY FUND - Class Iiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_RedemptionFeeOverRedemptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truetruetrue0.00500.0050[2]falsefalsefalsetruefalse2truetruetrue0.00500.0050[2]falsefalsefalsetruefalse3truetruetrue0.00500.0050[1]falsefalsefalsetruefalse4truetruetrue0.00750.0075[2]falsefalsefalsetruefalse5truetruetrue0.00750.0075[2]falsefalsefalsetruefalse6truetruetrue0.00750.0075[2]falsefalsefalsetruefalse7truetruetrue0.00500.0050[2]falsefalsefalsetruefalse8truetruetrue0.00500.0050[2]falsefalsefalsetruefalse9truetruetrue0.00600.0060[3]falsefalsefalsetruefalse10truetruetrue0.00600.0060[4]falsefalsefalsetruefalse11truetruetrue0.00600.0060[3]falsefalsefalsetruefalse12truetruetrue0.00600.0060[3]falsefalsefalsetruefalse13truetruetrue0.00600.0060[4]falsefalsefalsetruefalse14truetruetrue0.00600.0060[3]falsefalsefalsetruefalse15truetruetrue0.00250.0025[2]falsefalsefalsetruefalse16truetruetrue0.01000.0100[2]falsefalsefalsetruefalseOtherrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph b -Subsection instructions falsefalseRedemption fee0rr_RedemptionFeeOverRedemptiontruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue0.00750.0075falsefalsefalsetruefalseOthernanafalsefalseRedemption fee1(applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $25 million within any thirty (30) day period)11Shareholder Fees UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000010830MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000036887MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No authoritative reference available.falsefalseShareholder Fees [Table]126false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses, Caption127false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000036887Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000036887Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/OperatingExpensesDatafalsefalse020020 - Schedule - Annual Fund Operating Expensestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000010830MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000036887MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT GLOBAL MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000010830Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT GLOBAL MANAGED VOLATILITY FUND - Class Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000036887Memberrr_ProspectusShareClassAxisexplicitMemberSIMT GLOBAL MANAGED VOLATILITY FUNDSIMT GLOBAL MANAGED VOLATILITY FUND - Class Iiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00650.0065falsefalsefalsetruefalse2truetruetrue0.00650.0065falsefalsefalsetruefalse3truetruetrue0.00650.0065falsefalsefalsetruefalse4truetruetrue0.00650.0065falsefalsefalsetruefalse5truetruetrue0.00650.0065falsefalsefalsetruefalse6truetruetrue0.00650.0065falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00280.0028falsefalsefalsetruefalse10truetruetrue0.00280.0028falsefalsefalsetruefalse11truetruetrue0.00280.0028falsefalsefalsetruefalse12truetruetrue0.00280.0028falsefalsefalsetruefalse13truetruetrue0.00280.0028falsefalsefalsetruefalse14truetruetrue0.00280.0028falsefalsefalsetruefalse15truetruetrue0.01500.0150falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement Fees0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00650.0065falsefalsefalsetruefalseOthernanafalsefalseManagement Fees2falseRowprimaryElement*4false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.000.00falsefalsefalsetruefalse2truetruetrue0.000.00falsefalsefalsetruefalse3truetruetrue0.00250.0025falsefalsefalsetruefalse4truetruetrue0.000.00falsefalsefalsetruefalse5truetruetrue0.000.00falsefalsefalsetruefalse6truetruetrue0.00250.0025falsefalsefalsetruefalse7truetruetrue0.000.00falsefalsefalsetruefalse8truetruetrue0.00250.0025falsefalsefalsetruefalse9truetruetrue0.000.00falsefalsefalsetruefalse10truetruetrue0.000.00falsefalsefalsetruefalse11truetruetrue0.00250.0025falsefalsefalsetruefalse12truetruetrue0.000.00falsefalsefalsetruefalse13truetruetrue0.000.00falsefalsefalsetruefalse14truetruetrue0.00250.0025falsefalsefalsetruefalse15truetruetrue0.000.00falsefalsefalsetruefalse16truetruetrue0.00250.0025falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution (12b-1) Fees0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.000.00falsefalsefalsetruefalseOthernanafalsefalseDistribution (12b-1) Fees3falseRowprimaryElement*5false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00640.0064falsefalsefalsetruefalse2truetruetrue0.00890.0089falsefalsefalsetruefalse3truetruetrue0.00640.0064falsefalsefalsetruefalse4truetruetrue0.00670.0067falsefalsefalsetruefalse5truetruetrue0.00920.0092falsefalsefalsetruefalse6truetruetrue0.00670.0067falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00580.0058falsefalsefalsetruefalse10truetruetrue0.00830.0083falsefalsefalsetruefalse11truetruetrue0.00580.0058falsefalsefalsetruefalse12truetruetrue0.00590.0059falsefalsefalsetruefalse13truetruetrue0.00840.0084falsefalsefalsetruefalse14truetruetrue0.00590.0059falsefalsefalsetruefalse15truetruetrue0.00690.0069[2]falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther Expenses0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00920.0092falsefalsefalsetruefalseOthernanafalsefalseOther Expenses4falseRowprimaryElement*7false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01290.0129falsefalsefalsetruefalse2truetruetrue0.01540.0154falsefalsefalsetruefalse3truetruetrue0.01540.0154falsefalsefalsetruefalse4truetruetrue0.01320.0132falsefalsefalsetruefalse5truetruetrue0.01570.0157falsefalsefalsetruefalse6truetruetrue0.01570.0157falsefalsefalsetruefalse7truetruetrue0.01300.0130falsefalsefalsetruefalse8truetruetrue0.01550.0155falsefalsefalsetruefalse9truetruetrue0.00860.0086falsefalsefalsetruefalse10truetruetrue0.01110.0111falsefalsefalsetruefalse11truetruetrue0.01110.0111falsefalsefalsetruefalse12truetruetrue0.00870.0087falsefalsefalsetruefalse13truetruetrue0.01120.0112falsefalsefalsetruefalse14truetruetrue0.01120.0112falsefalsefalsetruefalse15truetruetrue0.02930.0293falsefalsefalsetruefalse16truetruetrue0.01550.0155falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph d -Subsection instructions falsefalseTotal Annual Fund Operating Expenses0rr_ExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01570.0157falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses14Annual Fund Operating Expenses UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000010830MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000036887MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Table]128false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00EXAMPLEfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, Heading129false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and that you sell your shares at the end of each period. The Example also assumes that each year your investment has a 5% return, Fund operating expenses remain the same and you reinvest all dividends and distributions.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative130false0rr_ExpenseExampleByYearCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Although your actual costs and returns might be different, your approximate costs of investing $10,000 in the Fund would be:falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, By Year, Caption131false0rr_ExpenseExampleWithRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000036887Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000036887Member row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/ExpenseExamplefalsefalse020030 - Schedule - Expense Example {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue131131falsefalsefalsetruefalse2truefalsetrue157157falsefalsefalsetruefalse3truefalsetrue157157falsefalsefalsetruefalse4truefalsetrue134134falsefalsefalsetruefalse5truefalsetrue160160falsefalsefalsetruefalse6truefalsetrue160160falsefalsefalsetruefalse7truefalsetrue132132falsefalsefalsetruefalse8truefalsetrue158158falsefalsefalsetruefalse9truefalsetrue8888falsefalsefalsetruefalse10truefalsetrue113113falsefalsefalsetruefalse11truefalsetrue113113falsefalsefalsetruefalse12truefalsetrue8989falsefalsefalsetruefalse13truefalsetrue114114falsefalsefalsetruefalse14truefalsetrue114114falsefalsefalsetruefalse15truefalsetrue296296falsefalsefalsetruefalse16truefalsetrue158158falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, With Redemption, 1 YearfalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.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:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 3 YearsfalseUSDfalsefalse$3falseColumnprimaryElement*5false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue708708falsefalsefalsetruefalse2truefalsetrue839839falsefalsefalsetruefalse3truefalsetrue839839falsefalsefalsetruefalse4truefalsetrue723723falsefalsefalsetruefalse5truefalsetrue855855falsefalsefalsetruefalse6truefalsetrue855855falsefalsefalsetruefalse7truefalsetrue713713falsefalsefalsetruefalse8truefalsetrue845845falsefalsefalsetruefalse9truefalsetrue477477falsefalsefalsetruefalse10truefalsetrue612612falsefalsefalsetruefalse11truefalsetrue612612falsefalsefalsetruefalse12truefalsetrue482482falsefalsefalsetruefalse13truefalsetrue617617falsefalsefalsetruefalse14truefalsetrue617617falsefalsefalsetruefalse15falsefalsetrue00falsefalsefalsetruefalse16truefalsetrue845845falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 5 YearsfalseUSDfalsefalse$4falseColumnprimaryElement*6false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.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:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 10 YearsfalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000010830MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000036887MemberRowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT GLOBAL MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000010830Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT GLOBAL MANAGED VOLATILITY FUND - Class Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000036887Memberrr_ProspectusShareClassAxisexplicitMemberSIMT GLOBAL MANAGED VOLATILITY FUNDSIMT GLOBAL MANAGED VOLATILITY FUND - Class Iiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue160160falsefalsefalsetruefalse2truefalsetrue496496falsefalsefalsetruefalse3truefalsetrue855855falsefalsefalsetruefalse4truefalsetrue18671867falsefalsefalsetruefalseOthernanafalsefalseSIMT GLOBAL MANAGED VOLATILITY FUND SIMT GLOBAL MANAGED VOLATILITY FUND - Class I41Expense Example (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000010830MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000036887MemberRowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExample.No authoritative reference available.falsefalseExpense Example, With Redemption [Table]132false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00PORTFOLIO TURNOVERfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover, Heading133false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 91% of the average value of its portfolio.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover134false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Investment StrategiesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Heading135false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The Global Managed Volatility Fund will typically invest in securities of U.S. and foreign companies of all capitalization ranges. These securities may include common stocks, preferred stocks, warrants, and ETFs. The Fund also may use futures contracts and forwards. Under normal circumstances, the Fund will invest in at least three countries outside of the U.S., but will typically invest much more broadly. It is expected that at least 40% of the Fund's assets will be invested in non-U.S. securities. The Fund will invest primarily in companies located in developed countries, but may also invest in companies located in emerging markets. The Fund uses a multi-manager approach, relying on a number of sub-advisers with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation (SIMC), the Fund's adviser. This approach is intended to manage the risk characteristics of the Fund. The Fund is expected to achieve an absolute return of the broad global equity markets, but with a lower absolute volatility. Over the long term, the Fund is expected to achieve a return similar to that of the MSCI World Equity Index, but with a lower level of volatility. However, given that the Fund's investment strategy focuses on absolute return and risk, the Fund's country, sector and market capitalization exposures will typically vary from the index and may cause significant performance deviations relative to the index over shorter-term periods. The Fund seeks to achieve lower volatility by constructing a portfolio of securities that the sub-advisers believe would produce a less volatile return stream to the market. Each sub-adviser effectively weighs securities based on their total expected risk and return, without regard to market capitalization and industry. In managing the Fund's currency exposure for foreign securities, the Fund may buy and sell futures or forward contracts on currencies for hedging purposes.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Narrative136false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal RisksfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk, Heading137false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Credit Risk - The risk that the issuer of a security, or the counterparty to a contract, will default or otherwise become unable to honor a financial obligation. Currency Risk - Due to the Fund's passive positions in currencies , its investments may fluctuate in response to broader macroeconomic risks than if it invested only in equity securities. Derivatives Risk - The Fund's use of futures contracts and forward contracts is subject to market risk, leverage risk, correlation risk and liquidity risk. Leverage risk and liquidity risk are described below. Market risk is the risk that the market value of an investment may move up and down, sometimes rapidly and unpredictably. Correlation risk is the risk that changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index. The Fund's use of forward contracts is also subject to credit risk and valuation risk. Valuation risk is the risk that the derivative may be difficult to value and/or valued incorrectly. Credit risk is described above. Each of these risks could cause the Fund to lose more than the principal amount invested in a derivative instrument. Equity Market Risk - The risk that stock prices will fall over short or extended periods of time. Exchange-Traded Funds (ETFs) Risk - The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio securities. Foreign Investment/Emerging Markets Risk - The risk that non-U.S. securities may be subject to additional risks due to, among other things, political, social and economic developments abroad, currency movements, and different legal, regulatory and tax environments. These additional risks may be heightened with respect to emerging market countries since political turmoil and rapid changes in economic conditions are more likely to occur in these countries. Hedged Strategies Risk - The Fund may employ investment strategies that involve greater risks than the strategies used by typical mutual funds, including derivative transactions. Although some of the sub-advisers use hedged strategies, there is no assurance that hedged strategies will protect against losses or perform better than non-hedged strategies, and some sub-advisers may use long-only strategies. Investment Style Risk - The risk that securities selected as part of a managed volatility strategy may underperform other segments of the equity markets or the equity markets as a whole. Leverage Risk - The use of leverage can amplify the effects of market volatility on the Fund's share price and may also cause the Fund to liquidate portfolio positions when it would not be advantageous to do so in order to satisfy its obligations. Liquidity Risk - The risk that certain securities may be difficult or impossible to sell at the time and the price that the Fund would like. The Fund may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance. Portfolio Turnover Risk - Due to its investment strategy, the Fund may buy and sell securities frequently. This may result in higher transaction costs and additional capital gains tax liabilities. Small and Medium Capitalization Risk - The smaller and medium capitalization companies in which the Fund invests may be more vulnerable to adverse business or economic events than larger, more established companies. In particular, small companies may have limited product lines, markets and financial resources, and may depend upon a relatively small management group. Therefore, small cap and medium cap stocks may be more volatile than those of larger companies. Small cap stocks may be traded over the counter or listed on an exchange. Loss of money is a risk of investing in the Fund.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk, Narrative138false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Performance InformationfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table, Heading139false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1 year, and since the Fund's inception, compared with those of a broad measure of market performance. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI. The Fund's Class I Shares commenced operations on June 29, 2007. Therefore, performance and average annual total returns for the periods prior to June 29, 2007 are calculated using the performance and average annual total returns of the Fund's Class A Shares, adjusted for the higher expenses of the Class I Shares.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance, Narrative140false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000036887Member row primary compact * ~</div>falsefalseBarChart5.jpg<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000036887Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/BarChartDatafalsefalse020050 - Schedule - Annual Total Returnstruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000010830MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000036887MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT GLOBAL MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000010830Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT GLOBAL MANAGED VOLATILITY FUND - Class Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000036887Memberrr_ProspectusShareClassAxisexplicitMemberSIMT GLOBAL MANAGED VOLATILITY FUNDSIMT GLOBAL MANAGED VOLATILITY FUND - Class Iiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*9false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.08270.0827falsefalsefalsetruefalse2truetruefalse0.0790.079falsefalsefalsetruefalse3truetruefalse0.08270.0827falsefalsefalsetruefalse4truetruefalse0.00030.0003falsefalsefalsetruefalse5truetruefalse-0.0039-0.0039falsefalsefalsetruefalse6truetruefalse0.00030.0003falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.04040.0404falsefalsefalsetruefalse10truetruefalse0.03780.0378falsefalsefalsetruefalse11truetruefalse0.04040.0404falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.01650.0165falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20070rr_AnnualReturn2007truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.0039-0.0039falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20072falseRowprimaryElement*10false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2908-0.2908falsefalsefalsetruefalse2truetruefalse-0.2929-0.2929falsefalsefalsetruefalse3truetruefalse-0.2908-0.2908falsefalsefalsetruefalse4truetruefalse-0.2713-0.2713falsefalsefalsetruefalse5truetruefalse-0.2738-0.2738falsefalsefalsetruefalse6truetruefalse-0.2713-0.2713falsefalsefalsetruefalse7truetruefalse-0.2453-0.2453falsefalsefalsetruefalse8truetruefalse-0.2453-0.2453falsefalsefalsetruefalse9truetruefalse-0.0713-0.0713falsefalsefalsetruefalse10truetruefalse-0.0735-0.0735falsefalsefalsetruefalse11truetruefalse-0.0713-0.0713falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse-0.4116-0.4116falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20080rr_AnnualReturn2008truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2738-0.2738falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20083falseRowprimaryElement*11false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.16240.1624falsefalsefalsetruefalse2truetruefalse0.15850.1585falsefalsefalsetruefalse3truetruefalse0.16240.1624falsefalsefalsetruefalse4truetruefalse0.03890.0389falsefalsefalsetruefalse5truetruefalse0.03560.0356falsefalsefalsetruefalse6truetruefalse0.03890.0389falsefalsefalsetruefalse7truetruefalse0.18250.1825falsefalsefalsetruefalse8truetruefalse0.18250.1825falsefalsefalsetruefalse9truetruefalse0.18480.1848falsefalsefalsetruefalse10truetruefalse0.18110.1811falsefalsefalsetruefalse11truetruefalse0.18480.1848falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.35780.3578falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20090rr_AnnualReturn2009truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.03560.0356falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20094falseRowprimaryElement*12false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14880.1488falsefalsefalsetruefalse2truetruefalse0.14630.1463falsefalsefalsetruefalse3truetruefalse0.14880.1488falsefalsefalsetruefalse4truetruefalse0.07170.0717falsefalsefalsetruefalse5truetruefalse0.0710.071falsefalsefalsetruefalse6truetruefalse0.07170.0717falsefalsefalsetruefalse7truetruefalse0.15210.1521falsefalsefalsetruefalse8truetruefalse0.15210.1521falsefalsefalsetruefalse9truetruefalse0.11010.1101falsefalsefalsetruefalse10truetruefalse0.10880.1088falsefalsefalsetruefalse11truetruefalse0.11010.1101falsefalsefalsetruefalse12truetruefalse0.07520.0752falsefalsefalsetruefalse13truetruefalse0.07520.0752falsefalsefalsetruefalse14truetruefalse0.07520.0752falsefalsefalsetruefalse15truetruefalse0.24070.2407falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20100rr_AnnualReturn2010truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.0710.071falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 201014Annual Total Returns UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000010830MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000036887MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to BarChartData.No authoritative reference available.falsefalseBar Chart [Table]141false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Best Quarter: 7.48% (09/30/09) Worst Quarter: -15.30% (12/31/08)</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart, Closing142false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalsePerformance Table, Heading143false0rr_PerformanceTableNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This table compares the Fund's average annual total returns for Class I Shares to those of a broad-based index and the MSCI World Minimum Volatility Index, which is designed to serve as a transparent and relevant benchmark for managed volatility equity strategies across the developed market world and aims to reflect the performance characteristics of a minimum-variance or managed volatility equity strategy, focused on absolute return and volatility with the lowest absolute risk. However, as noted above, the Fund's Class I Shares commenced operations on June 29, 2007. Therefore, the Fund's average annual total returns for the periods prior to that time are based on the average annual total returns of the Class A Shares, adjusted for the higher expenses of the Class I Shares. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also shouldshow the returns of an appropriate broadbased securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____). For a Fund that provides annual total returns for only one calendar year or for a Fund that does not include the bar chart because it does not have annual returns for a full calendar year, modify, as appropriate, the narrative explanation required by paragraph (c)(2)(i) (e.g., by stating that the information gives some indication of the risks of an investment in the Fund by comparing the Fund's performance with a broad measure of market performance).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iv -Subsection b falsefalsePerformance Table, Narrative144false0rr_AverageAnnualReturnCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 5 -Subsection b falsefalseAverage Annual Returns, Caption145false0rr_PerformanceTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000036887Member column rr_PerformanceMeasureAxis compact * row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000036887Member column rr_PerformanceMeasureAxis compact * row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/PerformanceTableDatafalsefalse020060 - Schedule - Average Annual Total Returns {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_AverageAnnualReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse2falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse3falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse4falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse5falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse6falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse7falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse8falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse9falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse10falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse11falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse12falsetruefalse00Class A Return After Taxes on Distribution and Sale of Fund Sharesfalsefalsefalsetruefalse13falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse14falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse15falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse16falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse17falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse18falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse19falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse20falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse21falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse22falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse23falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse24falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse25falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse26falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse27falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse28falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse29falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse30falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse31falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse32falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse33falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse34falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse35falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse36falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse37falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse38falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse39falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse40falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse41falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse42falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse43falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse44falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse45falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse46falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse47falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse48falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse49falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse50falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse51falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse52falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse53falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse54falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse55falsetruefalse00Class I Return After 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If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, LabelfalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition 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Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment Objective, Heading150false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Capital appreciation with less volatility than the broad global equity markets.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. 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Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpense, Heading152false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This table describes the fees and expenses that you may pay if you buy and hold Fund shares.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseExpense, Narrative153false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00SHAREHOLDER FEES (fees paid directly from your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees, Caption154false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073427Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073427Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/ShareholderFeesDatafalsefalse020010 - Schedule - Shareholder Feestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000010830MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073427MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT GLOBAL MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000010830Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT GLOBAL MANAGED VOLATILITY FUND - SIMT Global Managed Volatility Fund - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073427Memberrr_ProspectusShareClassAxisexplicitMemberSIMT GLOBAL MANAGED VOLATILITY FUNDSIMT GLOBAL MANAGED VOLATILITY FUND - SIMT Global Managed Volatility Fund - Class Giso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_RedemptionFeeOverRedemptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truetruetrue0.00500.0050[2]falsefalsefalsetruefalse2truetruetrue0.00500.0050[2]falsefalsefalsetruefalse3truetruetrue0.00500.0050[1]falsefalsefalsetruefalse4truetruetrue0.00750.0075[2]falsefalsefalsetruefalse5truetruetrue0.00750.0075[2]falsefalsefalsetruefalse6truetruetrue0.00750.0075[2]falsefalsefalsetruefalse7truetruetrue0.00500.0050[2]falsefalsefalsetruefalse8truetruetrue0.00500.0050[2]falsefalsefalsetruefalse9truetruetrue0.00600.0060[3]falsefalsefalsetruefalse10truetruetrue0.00600.0060[4]falsefalsefalsetruefalse11truetruetrue0.00600.0060[3]falsefalsefalsetruefalse12truetruetrue0.00600.0060[3]falsefalsefalsetruefalse13truetruetrue0.00600.0060[4]falsefalsefalsetruefalse14truetruetrue0.00600.0060[3]falsefalsefalsetruefalse15truetruetrue0.00250.0025[2]falsefalsefalsetruefalse16truetruetrue0.01000.0100[2]falsefalsefalsetruefalseOtherrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph b -Subsection instructions falsefalseRedemption fee0rr_RedemptionFeeOverRedemptiontruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue0.00750.0075falsefalsefalsetruefalseOthernanafalsefalseRedemption fee1(applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $25 million within any thirty (30) day period)11Shareholder Fees UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000010830MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073427MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No authoritative reference available.falsefalseShareholder Fees [Table]155false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses, Caption156false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073427Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073427Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/OperatingExpensesDatafalsefalse020020 - Schedule - Annual Fund Operating Expensestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000010830MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073427MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT GLOBAL MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000010830Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT GLOBAL MANAGED VOLATILITY FUND - SIMT Global Managed Volatility Fund - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073427Memberrr_ProspectusShareClassAxisexplicitMemberSIMT GLOBAL MANAGED VOLATILITY FUNDSIMT GLOBAL MANAGED VOLATILITY FUND - SIMT Global Managed Volatility Fund - Class Giso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00650.0065falsefalsefalsetruefalse2truetruetrue0.00650.0065falsefalsefalsetruefalse3truetruetrue0.00650.0065falsefalsefalsetruefalse4truetruetrue0.00650.0065falsefalsefalsetruefalse5truetruetrue0.00650.0065falsefalsefalsetruefalse6truetruetrue0.00650.0065falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00280.0028falsefalsefalsetruefalse10truetruetrue0.00280.0028falsefalsefalsetruefalse11truetruetrue0.00280.0028falsefalsefalsetruefalse12truetruetrue0.00280.0028falsefalsefalsetruefalse13truetruetrue0.00280.0028falsefalsefalsetruefalse14truetruetrue0.00280.0028falsefalsefalsetruefalse15truetruetrue0.01500.0150falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement Fees0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00650.0065falsefalsefalsetruefalseOthernanafalsefalseManagement Fees2falseRowprimaryElement*4false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.000.00falsefalsefalsetruefalse2truetruetrue0.000.00falsefalsefalsetruefalse3truetruetrue0.00250.0025falsefalsefalsetruefalse4truetruetrue0.000.00falsefalsefalsetruefalse5truetruetrue0.000.00falsefalsefalsetruefalse6truetruetrue0.00250.0025falsefalsefalsetruefalse7truetruetrue0.000.00falsefalsefalsetruefalse8truetruetrue0.00250.0025falsefalsefalsetruefalse9truetruetrue0.000.00falsefalsefalsetruefalse10truetruetrue0.000.00falsefalsefalsetruefalse11truetruetrue0.00250.0025falsefalsefalsetruefalse12truetruetrue0.000.00falsefalsefalsetruefalse13truetruetrue0.000.00falsefalsefalsetruefalse14truetruetrue0.00250.0025falsefalsefalsetruefalse15truetruetrue0.000.00falsefalsefalsetruefalse16truetruetrue0.00250.0025falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution (12b-1) Fees0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsetruefalseOthernanafalsefalseDistribution (12b-1) Fees3falseRowprimaryElement*5false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00640.0064falsefalsefalsetruefalse2truetruetrue0.00890.0089falsefalsefalsetruefalse3truetruetrue0.00640.0064falsefalsefalsetruefalse4truetruetrue0.00670.0067falsefalsefalsetruefalse5truetruetrue0.00920.0092falsefalsefalsetruefalse6truetruetrue0.00670.0067falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00580.0058falsefalsefalsetruefalse10truetruetrue0.00830.0083falsefalsefalsetruefalse11truetruetrue0.00580.0058falsefalsefalsetruefalse12truetruetrue0.00590.0059falsefalsefalsetruefalse13truetruetrue0.00840.0084falsefalsefalsetruefalse14truetruetrue0.00590.0059falsefalsefalsetruefalse15truetruetrue0.00690.0069[2]falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther Expenses0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00670.0067falsefalsefalsetruefalseOthernanafalsefalseOther Expenses4falseRowprimaryElement*7false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01290.0129falsefalsefalsetruefalse2truetruetrue0.01540.0154falsefalsefalsetruefalse3truetruetrue0.01540.0154falsefalsefalsetruefalse4truetruetrue0.01320.0132falsefalsefalsetruefalse5truetruetrue0.01570.0157falsefalsefalsetruefalse6truetruetrue0.01570.0157falsefalsefalsetruefalse7truetruetrue0.01300.0130falsefalsefalsetruefalse8truetruetrue0.01550.0155falsefalsefalsetruefalse9truetruetrue0.00860.0086falsefalsefalsetruefalse10truetruetrue0.01110.0111falsefalsefalsetruefalse11truetruetrue0.01110.0111falsefalsefalsetruefalse12truetruetrue0.00870.0087falsefalsefalsetruefalse13truetruetrue0.01120.0112falsefalsefalsetruefalse14truetruetrue0.01120.0112falsefalsefalsetruefalse15truetruetrue0.02930.0293falsefalsefalsetruefalse16truetruetrue0.01550.0155falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph d -Subsection instructions falsefalseTotal Annual Fund Operating Expenses0rr_ExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01570.0157falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses14Annual Fund Operating Expenses UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000010830MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073427MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Table]157false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00EXAMPLEfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, Heading158false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and that you sell your shares at the end of each period. The Example also assumes that each year your investment has a 5% return, Fund operating expenses remain the same and you reinvest all dividends and distributions.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative159false0rr_ExpenseExampleByYearCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Although your actual costs and returns might be different, your approximate costs of investing $10,000 in the Fund would be:falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, By Year, Caption160false0rr_ExpenseExampleWithRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073427Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073427Member row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/ExpenseExamplefalsefalse020030 - Schedule - Expense Example {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue131131falsefalsefalsetruefalse2truefalsetrue157157falsefalsefalsetruefalse3truefalsetrue157157falsefalsefalsetruefalse4truefalsetrue134134falsefalsefalsetruefalse5truefalsetrue160160falsefalsefalsetruefalse6truefalsetrue160160falsefalsefalsetruefalse7truefalsetrue132132falsefalsefalsetruefalse8truefalsetrue158158falsefalsefalsetruefalse9truefalsetrue8888falsefalsefalsetruefalse10truefalsetrue113113falsefalsefalsetruefalse11truefalsetrue113113falsefalsefalsetruefalse12truefalsetrue8989falsefalsefalsetruefalse13truefalsetrue114114falsefalsefalsetruefalse14truefalsetrue114114falsefalsefalsetruefalse15truefalsetrue296296falsefalsefalsetruefalse16truefalsetrue158158falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, With Redemption, 1 YearfalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.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:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 3 YearsfalseUSDfalsefalse$3falseColumnprimaryElement*5false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue708708falsefalsefalsetruefalse2truefalsetrue839839falsefalsefalsetruefalse3truefalsetrue839839falsefalsefalsetruefalse4truefalsetrue723723falsefalsefalsetruefalse5truefalsetrue855855falsefalsefalsetruefalse6truefalsetrue855855falsefalsefalsetruefalse7truefalsetrue713713falsefalsefalsetruefalse8truefalsetrue845845falsefalsefalsetruefalse9truefalsetrue477477falsefalsefalsetruefalse10truefalsetrue612612falsefalsefalsetruefalse11truefalsetrue612612falsefalsefalsetruefalse12truefalsetrue482482falsefalsefalsetruefalse13truefalsetrue617617falsefalsefalsetruefalse14truefalsetrue617617falsefalsefalsetruefalse15falsefalsetrue00falsefalsefalsetruefalse16truefalsetrue845845falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 5 YearsfalseUSDfalsefalse$4falseColumnprimaryElement*6false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.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:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 10 YearsfalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000010830MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000073427MemberRowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT GLOBAL MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000010830Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT GLOBAL MANAGED VOLATILITY FUND - SIMT Global Managed Volatility Fund - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073427Memberrr_ProspectusShareClassAxisexplicitMemberSIMT GLOBAL MANAGED VOLATILITY FUNDSIMT GLOBAL MANAGED VOLATILITY FUND - SIMT Global Managed Volatility Fund - Class Giso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue160160falsefalsefalsetruefalse2truefalsetrue496496falsefalsefalsetruefalse3truefalsetrue855855falsefalsefalsetruefalse4truefalsetrue18671867falsefalsefalsetruefalseOthernanafalsefalseSIMT GLOBAL MANAGED VOLATILITY FUND SIMT GLOBAL MANAGED VOLATILITY FUND - SIMT Global Managed Volatility Fund - Class G41Expense Example (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000010830MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000073427MemberRowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExample.No authoritative reference available.falsefalseExpense Example, With Redemption [Table]161false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00PORTFOLIO TURNOVERfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover, Heading162false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 91% of the average value of its portfolio.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover163false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Investment StrategiesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Heading164false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The Global Managed Volatility Fund will typically invest in securities of U.S. and foreign companies of all capitalization ranges. These securities may include common stocks, preferred stocks, warrants, and ETFs. The Fund also may use futures contracts and forwards. Under normal circumstances, the Fund will invest in at least three countries outside of the U.S., but will typically invest much more broadly. It is expected that at least 40% of the Fund's assets will be invested in non-U.S. securities. The Fund will invest primarily in companies located in developed countries, but may also invest in companies located in emerging markets. The Fund uses a multi-manager approach, relying on a number of sub-advisers with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation (SIMC), the Fund's adviser. This approach is intended to manage the risk characteristics of the Fund. The Fund is expected to achieve an absolute return of the broad global equity markets, but with a lower absolute volatility. Over the long term, the Fund is expected to achieve a return similar to that of the MSCI World Equity Index, but with a lower level of volatility. However, given that the Fund's investment strategy focuses on absolute return and risk, the Fund's country, sector and market capitalization exposures will typically vary from the index and may cause significant performance deviations relative to the index over shorter-term periods. The Fund seeks to achieve lower volatility by constructing a portfolio of securities that the sub-advisers believe would produce a less volatile return stream to the market. Each sub-adviser effectively weighs securities based on their total expected risk and return, without regard to market capitalization and industry. In managing the Fund's currency exposure for foreign securities, the Fund may buy and sell futures or forward contracts on currencies for hedging purposes.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Narrative165false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal RisksfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk, Heading166false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Credit Risk - The risk that the issuer of a security, or the counterparty to a contract, will default or otherwise become unable to honor a financial obligation. Currency Risk - Due to the Fund's passive positions in currencies , its investments may fluctuate in response to broader macroeconomic risks than if it invested only in equity securities. Derivatives Risk - The Fund's use of futures contracts, options on futures, forward contracts and swap agreements is subject to market risk, leverage risk, correlation risk and liquidity risk. Leverage risk and liquidity risk are described below. Market risk is the risk that the market value of an investment may move up and down, sometimes rapidly and unpredictably. Correlation risk is the risk that changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index. The Fund's use of forward contracts and swap agreements is also subject to credit risk and valuation risk. Valuation risk is the risk that the derivative may be difficult to value and/or valued incorrectly. Credit risk is described above. Each of these risks could cause the Fund to lose more than the principal amount invested in a derivative instrument. Equity Market Risk - The risk that stock prices will fall over short or extended periods of time. Exchange-Traded Funds (ETFs) Risk - The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio securities. Foreign Investment/Emerging Markets Risk - The risk that non-U.S. securities may be subject to additional risks due to, among other things, political, social and economic developments abroad, currency movements, and different legal, regulatory and tax environments. These additional risks may be heightened with respect to emerging market countries since political turmoil and rapid changes in economic conditions are more likely to occur in these countries. Hedged Strategies Risk - The Fund may employ investment strategies that involve greater risks than the strategies used by typical mutual funds, including short sales and derivative transactions. Although some of the sub-advisers use hedged strategies, there is no assurance that hedged strategies will protect against losses or perform better than non-hedged strategies, and some sub-advisers may use long-only strategies. Investment Style Risk - The risk that securities selected as part of a managed volatility strategy may underperform other segments of the equity markets or the equity markets as a whole. Leverage Risk - The use of leverage can amplify the effects of market volatility on the Fund's share price and may also cause the Fund to liquidate portfolio positions when it would not be advantageous to do so in order to satisfy its obligations. Liquidity Risk - The risk that certain securities may be difficult or impossible to sell at the time and the price that the Fund would like. The Fund may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance. Portfolio Turnover Risk - Due to its investment strategy, the Fund may buy and sell securities frequently. This may result in higher transaction costs and additional capital gains tax liabilities. Short Sales Risk - Short sales expose the Fund to the risk that it will be required to buy the security sold short (also known as "covering" the short position) at a time when the security has appreciated in value, thus resulting in a loss to the Fund. Reinvesting proceeds received from short selling may create leverage which can amplify the effects of market volatility on the Fund's share price. Small and Medium Capitalization Risk - The smaller and medium capitalization companies in which the Fund invests may be more vulnerable to adverse business or economic events than larger, more established companies. In particular, small companies may have limited product lines, markets and financial resources, and may depend upon a relatively small management group. Therefore, small cap and medium cap stocks may be more volatile than those of larger companies. Small cap stocks may be traded over the counter or listed on an exchange. Loss of money is a risk of investing in the Fund.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk, Narrative167false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Performance InformationfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table, Heading168false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>As of January 31, 2010, Class G Shares of the Fund had not commenced operations, and did not have a performance history. The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1 year, and since the Fund's inception, compared with those of a broad measure of market performance. Since Class G Shares are invested in the same portfolio of securities, return for Class G Shares will be substantially similar to those of Class A Shares, shown here, and will differ only to the extent that Class G Shares have higher expenses. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call1-800-DIAL-SEI.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance, Narrative169false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073427Member row primary compact * ~</div>falsefalseBarChart6.jpg<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073427Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/BarChartDatafalsefalse020050 - Schedule - Annual Total Returnstruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000010830MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073427MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT GLOBAL MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000010830Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT GLOBAL MANAGED VOLATILITY FUND - SIMT Global Managed Volatility Fund - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073427Memberrr_ProspectusShareClassAxisexplicitMemberSIMT GLOBAL MANAGED VOLATILITY FUNDSIMT GLOBAL MANAGED VOLATILITY FUND - SIMT Global Managed Volatility Fund - Class Giso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*9false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.08270.0827falsefalsefalsetruefalse2truetruefalse0.0790.079falsefalsefalsetruefalse3truetruefalse0.08270.0827falsefalsefalsetruefalse4truetruefalse0.00030.0003falsefalsefalsetruefalse5truetruefalse-0.0039-0.0039falsefalsefalsetruefalse6truetruefalse0.00030.0003falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.04040.0404falsefalsefalsetruefalse10truetruefalse0.03780.0378falsefalsefalsetruefalse11truetruefalse0.04040.0404falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.01650.0165falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20070rr_AnnualReturn2007truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.00030.0003falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20072falseRowprimaryElement*10false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2908-0.2908falsefalsefalsetruefalse2truetruefalse-0.2929-0.2929falsefalsefalsetruefalse3truetruefalse-0.2908-0.2908falsefalsefalsetruefalse4truetruefalse-0.2713-0.2713falsefalsefalsetruefalse5truetruefalse-0.2738-0.2738falsefalsefalsetruefalse6truetruefalse-0.2713-0.2713falsefalsefalsetruefalse7truetruefalse-0.2453-0.2453falsefalsefalsetruefalse8truetruefalse-0.2453-0.2453falsefalsefalsetruefalse9truetruefalse-0.0713-0.0713falsefalsefalsetruefalse10truetruefalse-0.0735-0.0735falsefalsefalsetruefalse11truetruefalse-0.0713-0.0713falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse-0.4116-0.4116falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20080rr_AnnualReturn2008truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2713-0.2713falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20083falseRowprimaryElement*11false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.16240.1624falsefalsefalsetruefalse2truetruefalse0.15850.1585falsefalsefalsetruefalse3truetruefalse0.16240.1624falsefalsefalsetruefalse4truetruefalse0.03890.0389falsefalsefalsetruefalse5truetruefalse0.03560.0356falsefalsefalsetruefalse6truetruefalse0.03890.0389falsefalsefalsetruefalse7truetruefalse0.18250.1825falsefalsefalsetruefalse8truetruefalse0.18250.1825falsefalsefalsetruefalse9truetruefalse0.18480.1848falsefalsefalsetruefalse10truetruefalse0.18110.1811falsefalsefalsetruefalse11truetruefalse0.18480.1848falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.35780.3578falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20090rr_AnnualReturn2009truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.03890.0389falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20094falseRowprimaryElement*12false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14880.1488falsefalsefalsetruefalse2truetruefalse0.14630.1463falsefalsefalsetruefalse3truetruefalse0.14880.1488falsefalsefalsetruefalse4truetruefalse0.07170.0717falsefalsefalsetruefalse5truetruefalse0.0710.071falsefalsefalsetruefalse6truetruefalse0.07170.0717falsefalsefalsetruefalse7truetruefalse0.15210.1521falsefalsefalsetruefalse8truetruefalse0.15210.1521falsefalsefalsetruefalse9truetruefalse0.11010.1101falsefalsefalsetruefalse10truetruefalse0.10880.1088falsefalsefalsetruefalse11truetruefalse0.11010.1101falsefalsefalsetruefalse12truetruefalse0.07520.0752falsefalsefalsetruefalse13truetruefalse0.07520.0752falsefalsefalsetruefalse14truetruefalse0.07520.0752falsefalsefalsetruefalse15truetruefalse0.24070.2407falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20100rr_AnnualReturn2010truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.07170.0717falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 201014Annual Total Returns UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000010830MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073427MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to BarChartData.No authoritative reference available.falsefalseBar Chart [Table]170false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Best Quarter: 7.57% (09/30/09) Worst Quarter: -15.33% (12/31/08)</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart, Closing171false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalsePerformance Table, Heading172false0rr_PerformanceTableNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This table compares the Fund's average annual total returns for Class A Shares to those of a broad-based index and the MSCI World Minimum Volatility Index, which is designed to serve as a transparent and relevant benchmark for managed volatility equity strategies across the developed market world and aims to reflect the performance characteristics of a minimum-variance or managed volatility equity strategy, focused on absolute return and volatility with the lowest absolute risk. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also shouldshow the returns of an appropriate broadbased securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____). For a Fund that provides annual total returns for only one calendar year or for a Fund that does not include the bar chart because it does not have annual returns for a full calendar year, modify, as appropriate, the narrative explanation required by paragraph (c)(2)(i) (e.g., by stating that the information gives some indication of the risks of an investment in the Fund by comparing the Fund's performance with a broad measure of market performance).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iv -Subsection b falsefalsePerformance Table, Narrative173false0rr_AverageAnnualReturnCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 5 -Subsection b falsefalseAverage Annual Returns, Caption174false0rr_PerformanceTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073427Member column rr_PerformanceMeasureAxis compact * row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact ck0000804239_S000010830Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073427Member column rr_PerformanceMeasureAxis compact * row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/PerformanceTableDatafalsefalse020060 - Schedule - Average Annual Total Returns {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_AverageAnnualReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse2falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse3falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse4falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse5falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse6falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse7falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse8falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse9falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse10falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse11falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse12falsetruefalse00Class A Return After Taxes on Distribution and Sale of Fund Sharesfalsefalsefalsetruefalse13falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse14falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse15falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse16falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse17falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse18falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse19falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse20falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse21falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse22falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse23falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse24falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse25falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse26falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse27falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse28falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse29falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse30falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse31falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse32falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse33falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse34falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse35falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund 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If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, LabelfalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition 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Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, 1 YearfalseUSDfalsefalse$3falseColumnprimaryElement*7false0rr_AverageAnnualReturnSinceInceptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.04840.0484falsefalsefalsetruefalse2truetruetrue0.04560.0456falsefalsefalsetruefalse3truetruetrue0.04290.0429falsefalsefalsetruefalse4truetruetrue0.03980.0398falsefalsefalsetruefalse5truetruetrue0.04490.0449falsefalsefalsetruefalse6truetruetrue0.04560.0456falsefalsefalsetruefalse7truetruetrue0.03900.0390falsefalsefalsetruefalse8truetruetrue0.03620.0362falsefalsefalsetruefalse9truetruetrue0.04840.0484falsefalsefalsetruefalse10truetruetrue0.04560.0456falsefalsefalsetruefalse11truetruetrue0.04290.0429falsefalsefalsetruefalse12truetruetrue0.03980.0398falsefalsefalsetruefalse13truetruetrue-0.0243-0.0243falsefalsefalsetruefalse14truetruetrue0.00410.0041falsefalsefalsetruefalse15truetruetrue0.02580.0258falsefalsefalsetruefalse16truetruetrue-0.0273-0.0273falsefalsefalsetruefalse17truetruetrue-0.0215-0.0215falsefalsefalsetruefalse18truetruetrue-0.0272-0.0272falsefalsefalsetruefalse19truetruetrue0.00410.0041falsefalsefalsetruefalse20truetruetrue0.02580.0258falsefalsefalsetruefalse21truetruetrue-0.0304-0.0304falsefalsefalsetruefalse22truetruetrue-0.0242-0.0242falsefalsefalsetruefalse23truetruetrue-0.0243-0.0243falsefalsefalsetruefalse24truetruetrue0.00410.0041falsefalsefalsetruefalse25truetruetrue0.02580.0258falsefalsefalsetruefalse26truetruetrue-0.0273-0.0273falsefalsefalsetruefalse27truetruetrue-0.0215-0.0215falsefalsefalsetruefalse28truetruetrue0.00780.0078falsefalsefalsetruefalse29truetruetrue-0.0201-0.0201falsefalsefalsetruefalse30truetruetrue0.00470.0047falsefalsefalsetruefalse31truetruetrue0.00540.0054falsefalsefalsetruefalse32truetruetrue0.00780.0078falsefalsefalsetruefalse33truetruetrue-0.0201-0.0201falsefalsefalsetruefalse34truetruetrue0.00470.0047falsefalsefalsetruefalse35truetruetrue0.00540.0054falsefalsefalsetruefalse36truetruetrue0.06860.0686falsefalsefalsetruefalse37truetruetrue0.07350.0735falsefalsefalsetruefalse38truetruetrue0.04530.0453falsefalsefalsetruefalse39truetruetrue0.04490.0449falsefalsefalsetruefalse40truetruetrue0.06430.0643falsefalsefalsetruefalse41truetruetrue0.07350.0735falsefalsefalsetruefalse42truetruetrue0.04150.0415falsefalsefalsetruefalse43truetruetrue0.04130.0413falsefalsefalsetruefalse44truetruetrue0.06860.0686falsefalsefalsetruefalse45falsetruetrue00falsefalsefalsetruefalse46truetruetrue0.04530.0453falsefalsefalsetruefalse47truetruetrue0.04490.0449falsefalsefalsetruefalse48truetruetrue0.07900.0790falsefalsefalsetruefalse49truetruetrue0.06270.0627falsefalsefalsetruefalse50truetruetrue0.05820.0582falsefalsefalsetruefalse51truetruetrue0.05560.0556falsefalsefalsetruefalse52truetruetrue0.07900.0790falsefalsefalsetruefalse53truetruetrue0.06270.0627falsefalsefalsetruefalse54truetruetrue0.05820.0582falsefalsefalsetruefalse55truetruetrue0.05560.0556falsefalsefalsetruefalse56truetruetrue0.07900.0790falsefalsefalsetruefalse57truetruetrue0.06270.0627falsefalsefalsetruefalse58truetruetrue0.05820.0582falsefalsefalsetruefalse59truetruetrue0.05560.0556falsefalsefalsetruefalse60truetruetrue0.04830.0483falsefalsefalsetruefalse61truetruetrue0.06760.0676falsefalsefalsetruefalse62truetruetrue0.04370.0437falsefalsefalsetruefalse63truetruetrue0.04140.0414falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn 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Minimum Volatility Index, 100% Hedged to USD ReturnStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse2truetruetrue0.12030.1203falsefalsefalsetruefalse3truetruetrue0.02580.0258falsefalsefalsetruefalse4falsetruefalse002006-07-312006-07-31falsefalsetruetruefalseOthernanafalsefalseSIMT GLOBAL MANAGED VOLATILITY FUND - SIMT Global Managed Volatility Fund - Class G MSCI World Minimum Volatility Index, 100% Hedged to USD Return4falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000010830MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000073427MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT GLOBAL MANAGED VOLATILITY 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Distributionsfalsefalsefalsetruefalse2truetruetrue0.07170.0717falsefalsefalsetruefalse3truetruetrue-0.0273-0.0273falsefalsefalsetruefalse4falsetruefalse002006-07-272006-07-27[1]falsefalsetruetruefalseOthernanafalsefalseSIMT GLOBAL MANAGED VOLATILITY FUND - SIMT Global Managed Volatility Fund - Class G After Taxes on Distributions5falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000010830MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000073427MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT GLOBAL MANAGED VOLATILITY FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000010830Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT GLOBAL MANAGED VOLATILITY FUND - SIMT Global Managed Volatility Fund - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073427Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseAfter Taxes on Distributions and Salesrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsAndSalesMemberrr_PerformanceMeasureAxisexplicitMemberSIMT GLOBAL MANAGED VOLATILITY FUNDSIMT GLOBAL MANAGED VOLATILITY FUND - SIMT Global Managed Volatility Fund - Class GAfter Taxes on Distributions and SalesStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund SharesClass A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse2truetruetrue0.04660.0466falsefalsefalsetruefalse3truetruetrue-0.0215-0.0215falsefalsefalsetruefalse4falsetruefalse002006-07-272006-07-27[1]falsefalsetruetruefalseOthernanafalsefalseSIMT GLOBAL MANAGED VOLATILITY FUND - SIMT Global Managed Volatility Fund - Class G After Taxes on Distributions and Sales1Index returns are shown from July 31, 2006.45Average Annual Total Returns SIMT GLOBAL MANAGED VOLATILITY FUNDUnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000010830MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000073427MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to PerformanceTableData.No authoritative reference available.falsefalsePerformance [Table]175false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturn1falsefalsefalse00SIMT Tax-Managed Managed Volatility Fund | SIMT Tax-Managed Managed Volatility Fund - Class ASIMT Tax-Managed Managed Volatility Fund | SIMT Tax-Managed Managed Volatility Fund - Class Afalsefalsefalsefalsefalse7falsefalseUSDtruefalse{dei_LegalEntityAxis} : SIMT Tax-Managed Managed Volatility Fund {rr_ProspectusShareClassAxis} : SIMT Tax-Managed Managed Volatility Fund - Class A 1/29/2010 - 2/4/2011 USD ($) $eol_0001104659-11-005144_STD_372_20110204_0_396770x-9996087_429423x-9996131http://www.sec.gov/CIK0000804239duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseck0000804239_S000017259Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000017259Memberdei_LegalEntityAxisexplicitMemberfalsefalseck0000804239_C000047774Memberrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000047774Memberrr_ProspectusShareClassAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0iso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseSIMT Tax-Managed Managed Volatility Fund | SIMT Tax-Managed Managed Volatility Fund - Class A177false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00TAX-MANAGED MANAGED VOLATILITY FUNDfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return, Heading178false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment GoalfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment Objective, Heading179false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>To maximize after-tax returns, but with a lower level of volatility than the broad U.S. equity markets.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseinvestment Objective, Primary180false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and ExpensesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpense, Heading181false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This table describes the fees and expenses that you may pay if you buy and hold Fund shares.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseExpense, Narrative182false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00SHAREHOLDER FEES (fees paid directly from your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees, Caption183false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000017259Member column rr_ProspectusShareClassAxis compact ck0000804239_C000047774Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000017259Member column rr_ProspectusShareClassAxis compact ck0000804239_C000047774Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/ShareholderFeesDatafalsefalse020010 - Schedule - Shareholder Feestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000017259MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000047774MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT Tax-Managed Managed Volatility Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000017259Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT Tax-Managed Managed Volatility Fund - Class Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000047774Memberrr_ProspectusShareClassAxisexplicitMemberSIMT Tax-Managed Managed Volatility FundSIMT Tax-Managed Managed Volatility Fund - Class Aiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_RedemptionFeeOverRedemptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truetruetrue0.00500.0050[2]falsefalsefalsetruefalse2truetruetrue0.00500.0050[2]falsefalsefalsetruefalse3truetruetrue0.00500.0050[1]falsefalsefalsetruefalse4truetruetrue0.00750.0075[2]falsefalsefalsetruefalse5truetruetrue0.00750.0075[2]falsefalsefalsetruefalse6truetruetrue0.00750.0075[2]falsefalsefalsetruefalse7truetruetrue0.00500.0050[2]falsefalsefalsetruefalse8truetruetrue0.00500.0050[2]falsefalsefalsetruefalse9truetruetrue0.00600.0060[3]falsefalsefalsetruefalse10truetruetrue0.00600.0060[4]falsefalsefalsetruefalse11truetruetrue0.00600.0060[3]falsefalsefalsetruefalse12truetruetrue0.00600.0060[3]falsefalsefalsetruefalse13truetruetrue0.00600.0060[4]falsefalsefalsetruefalse14truetruetrue0.00600.0060[3]falsefalsefalsetruefalse15truetruetrue0.00250.0025[2]falsefalsefalsetruefalse16truetruetrue0.01000.0100[2]falsefalsefalsetruefalseOtherrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph b -Subsection instructions falsefalseRedemption fee0rr_RedemptionFeeOverRedemptiontruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue0.00500.0050falsefalsefalsetruefalseOthernanafalsefalseRedemption fee1(applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $25 million within any thirty (30) day period)11Shareholder Fees UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000017259MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000047774MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No authoritative reference available.falsefalseShareholder Fees [Table]184false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses, Caption185false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000017259Member column rr_ProspectusShareClassAxis compact ck0000804239_C000047774Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000017259Member column rr_ProspectusShareClassAxis compact ck0000804239_C000047774Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/OperatingExpensesDatafalsefalse020020 - Schedule - Annual Fund Operating Expensestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000017259MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000047774MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT Tax-Managed Managed Volatility Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000017259Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT Tax-Managed Managed Volatility Fund - Class Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000047774Memberrr_ProspectusShareClassAxisexplicitMemberSIMT Tax-Managed Managed Volatility FundSIMT Tax-Managed Managed Volatility Fund - Class Aiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00650.0065falsefalsefalsetruefalse2truetruetrue0.00650.0065falsefalsefalsetruefalse3truetruetrue0.00650.0065falsefalsefalsetruefalse4truetruetrue0.00650.0065falsefalsefalsetruefalse5truetruetrue0.00650.0065falsefalsefalsetruefalse6truetruetrue0.00650.0065falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00280.0028falsefalsefalsetruefalse10truetruetrue0.00280.0028falsefalsefalsetruefalse11truetruetrue0.00280.0028falsefalsefalsetruefalse12truetruetrue0.00280.0028falsefalsefalsetruefalse13truetruetrue0.00280.0028falsefalsefalsetruefalse14truetruetrue0.00280.0028falsefalsefalsetruefalse15truetruetrue0.01500.0150falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement Fees0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00650.0065falsefalsefalsetruefalseOthernanafalsefalseManagement Fees2falseRowprimaryElement*4false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.000.00falsefalsefalsetruefalse2truetruetrue0.000.00falsefalsefalsetruefalse3truetruetrue0.00250.0025falsefalsefalsetruefalse4truetruetrue0.000.00falsefalsefalsetruefalse5truetruetrue0.000.00falsefalsefalsetruefalse6truetruetrue0.00250.0025falsefalsefalsetruefalse7truetruetrue0.000.00falsefalsefalsetruefalse8truetruetrue0.00250.0025falsefalsefalsetruefalse9truetruetrue0.000.00falsefalsefalsetruefalse10truetruetrue0.000.00falsefalsefalsetruefalse11truetruetrue0.00250.0025falsefalsefalsetruefalse12truetruetrue0.000.00falsefalsefalsetruefalse13truetruetrue0.000.00falsefalsefalsetruefalse14truetruetrue0.00250.0025falsefalsefalsetruefalse15truetruetrue0.000.00falsefalsefalsetruefalse16truetruetrue0.00250.0025falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution (12b-1) Fees0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.000.00falsefalsefalsetruefalseOthernanafalsefalseDistribution (12b-1) Fees3falseRowprimaryElement*5false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00640.0064falsefalsefalsetruefalse2truetruetrue0.00890.0089falsefalsefalsetruefalse3truetruetrue0.00640.0064falsefalsefalsetruefalse4truetruetrue0.00670.0067falsefalsefalsetruefalse5truetruetrue0.00920.0092falsefalsefalsetruefalse6truetruetrue0.00670.0067falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00580.0058falsefalsefalsetruefalse10truetruetrue0.00830.0083falsefalsefalsetruefalse11truetruetrue0.00580.0058falsefalsefalsetruefalse12truetruetrue0.00590.0059falsefalsefalsetruefalse13truetruetrue0.00840.0084falsefalsefalsetruefalse14truetruetrue0.00590.0059falsefalsefalsetruefalse15truetruetrue0.00690.0069[2]falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther Expenses0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00650.0065falsefalsefalsetruefalseOthernanafalsefalseOther Expenses4falseRowprimaryElement*7false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01290.0129falsefalsefalsetruefalse2truetruetrue0.01540.0154falsefalsefalsetruefalse3truetruetrue0.01540.0154falsefalsefalsetruefalse4truetruetrue0.01320.0132falsefalsefalsetruefalse5truetruetrue0.01570.0157falsefalsefalsetruefalse6truetruetrue0.01570.0157falsefalsefalsetruefalse7truetruetrue0.01300.0130falsefalsefalsetruefalse8truetruetrue0.01550.0155falsefalsefalsetruefalse9truetruetrue0.00860.0086falsefalsefalsetruefalse10truetruetrue0.01110.0111falsefalsefalsetruefalse11truetruetrue0.01110.0111falsefalsefalsetruefalse12truetruetrue0.00870.0087falsefalsefalsetruefalse13truetruetrue0.01120.0112falsefalsefalsetruefalse14truetruetrue0.01120.0112falsefalsefalsetruefalse15truetruetrue0.02930.0293falsefalsefalsetruefalse16truetruetrue0.01550.0155falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph d -Subsection instructions falsefalseTotal Annual Fund Operating Expenses0rr_ExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01300.0130falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses14Annual Fund Operating Expenses UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000017259MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000047774MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Table]186false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00EXAMPLEfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, Heading187false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and that you sell your shares at the end of each period. The Example also assumes that each year your investment has a 5% return, Fund operating expenses remain the same and you reinvest all dividends and distributions.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative188false0rr_ExpenseExampleByYearCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Although your actual costs and returns might be different, your approximate costs of investing $10,000 in the Fund would be:falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, By Year, Caption189false0rr_ExpenseExampleWithRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000017259Member column rr_ProspectusShareClassAxis compact ck0000804239_C000047774Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000017259Member column rr_ProspectusShareClassAxis compact ck0000804239_C000047774Member row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/ExpenseExamplefalsefalse020030 - Schedule - Expense Example {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue131131falsefalsefalsetruefalse2truefalsetrue157157falsefalsefalsetruefalse3truefalsetrue157157falsefalsefalsetruefalse4truefalsetrue134134falsefalsefalsetruefalse5truefalsetrue160160falsefalsefalsetruefalse6truefalsetrue160160falsefalsefalsetruefalse7truefalsetrue132132falsefalsefalsetruefalse8truefalsetrue158158falsefalsefalsetruefalse9truefalsetrue8888falsefalsefalsetruefalse10truefalsetrue113113falsefalsefalsetruefalse11truefalsetrue113113falsefalsefalsetruefalse12truefalsetrue8989falsefalsefalsetruefalse13truefalsetrue114114falsefalsefalsetruefalse14truefalsetrue114114falsefalsefalsetruefalse15truefalsetrue296296falsefalsefalsetruefalse16truefalsetrue158158falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, With Redemption, 1 YearfalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.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:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 3 YearsfalseUSDfalsefalse$3falseColumnprimaryElement*5false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue708708falsefalsefalsetruefalse2truefalsetrue839839falsefalsefalsetruefalse3truefalsetrue839839falsefalsefalsetruefalse4truefalsetrue723723falsefalsefalsetruefalse5truefalsetrue855855falsefalsefalsetruefalse6truefalsetrue855855falsefalsefalsetruefalse7truefalsetrue713713falsefalsefalsetruefalse8truefalsetrue845845falsefalsefalsetruefalse9truefalsetrue477477falsefalsefalsetruefalse10truefalsetrue612612falsefalsefalsetruefalse11truefalsetrue612612falsefalsefalsetruefalse12truefalsetrue482482falsefalsefalsetruefalse13truefalsetrue617617falsefalsefalsetruefalse14truefalsetrue617617falsefalsefalsetruefalse15falsefalsetrue00falsefalsefalsetruefalse16truefalsetrue845845falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 5 YearsfalseUSDfalsefalse$4falseColumnprimaryElement*6false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.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:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 10 YearsfalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000017259MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000047774MemberRowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT Tax-Managed Managed Volatility Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000017259Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT Tax-Managed Managed Volatility Fund - Class Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000047774Memberrr_ProspectusShareClassAxisexplicitMemberSIMT Tax-Managed Managed Volatility FundSIMT Tax-Managed Managed Volatility Fund - Class Aiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue132132falsefalsefalsetruefalse2truefalsetrue412412falsefalsefalsetruefalse3truefalsetrue713713falsefalsefalsetruefalse4truefalsetrue15681568falsefalsefalsetruefalseOthernanafalsefalseSIMT Tax-Managed Managed Volatility Fund SIMT Tax-Managed Managed Volatility Fund - Class A41Expense Example (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000017259MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000047774MemberRowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExample.No authoritative reference available.falsefalseExpense Example, With Redemption [Table]190false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00PORTFOLIO TURNOVERfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover, Heading191false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 28% of the average value of its portfolio.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover192false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Investment StrategiesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Heading193false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The Tax-Managed Managed Volatility Fund will typically invest in securities of U.S. companies of all capitalization ranges. These securities may include common stocks, preferred stocks, warrants, depositary receipts and ETFs. Although the Fund will be measured against the Russell 3000 Index, the Fund is expected to have significant sector and market capitalization deviations from the index given its focus on absolute risk as opposed to index relative risk. This could lead to significant performance deviations relative to the index over shorter-term periods. The Fund uses a multi-manager approach, relying on a number of sub-advisers with differing investment approaches to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation (SIMC), the Fund's adviser. Each sub-adviser, in managing its portion of the Fund's assets, intends to achieve returns similar to those of the broad U.S. equity markets in a tax-efficient fashion, but with a lower level of volatility. The Fund seeks to achieve lower volatility by constructing a portfolio of securities that effectively weighs securities based on their total expected risk and return, without regard to market capitalization and industry. This will tend to lead the Fund's sub-advisers to construct portfolios with a low beta relative to the overall U.S. equity market. In addition, the sub-advisers will look to manage the impact of taxes by controlling portfolio turnover levels, selling stocks with the highest tax cost first and opportunistically harvesting losses to offset gains where possible.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Narrative194false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal RisksfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk, Heading195false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Equity Market Risk - The risk that stock prices will fall over short or extended periods of time. Exchange-Traded Funds (ETFs) Risk - The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio securities. Hedged Strategies Risk - The Fund may employ investment strategies that involve greater risks than the strategies used by typical mutual funds. Although some of the sub-advisers use hedged strategies, there is no assurance that hedged strategies will protect against losses or perform better than non-hedged strategies, and some sub-advisers may use long-only strategies. Investment Style Risk - The risk that securities selected as part of a managed volatility strategy may underperform other segments of the equity markets or the equity markets as a whole. Leverage Risk - The use of leverage can amplify the effects of market volatility on the Fund's share price and may also cause the Fund to liquidate portfolio positions when it would not be advantageous to do so in order to satisfy its obligations. Liquidity Risk - The risk that certain securities may be difficult or impossible to sell at the time and the price that the Fund would like. The Fund may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance. Small and Medium Capitalization Risk - The smaller and medium capitalization companies in which the Fund invests may be more vulnerable to adverse business or economic events than larger, more established companies. In particular, small companies may have limited product lines, markets and financial resources, and may depend upon a relatively small management group. Therefore, small cap and medium cap stocks may be more volatile than those of larger companies. Small cap stocks may be traded over the counter or listed on an exchange. Taxation Risk - The Fund is managed to minimize tax consequences to investors, but will likely earn taxable income and gains from time to time. Loss of money is a risk of investing in the Fund.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk, Narrative196false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Performance InformationfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table, Heading197false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1 year, and since the Fund's inception, compared with those of a broad measure of market performance. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance, Narrative198false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000017259Member column rr_ProspectusShareClassAxis compact ck0000804239_C000047774Member row primary compact * ~</div>falsefalseBarChart7.jpg<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000017259Member column rr_ProspectusShareClassAxis compact ck0000804239_C000047774Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/BarChartDatafalsefalse020050 - Schedule - Annual Total Returnstruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000017259MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000047774MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT Tax-Managed Managed Volatility Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000017259Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT Tax-Managed Managed Volatility Fund - Class Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000047774Memberrr_ProspectusShareClassAxisexplicitMemberSIMT Tax-Managed Managed Volatility FundSIMT Tax-Managed Managed Volatility Fund - Class Aiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*10false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2908-0.2908falsefalsefalsetruefalse2truetruefalse-0.2929-0.2929falsefalsefalsetruefalse3truetruefalse-0.2908-0.2908falsefalsefalsetruefalse4truetruefalse-0.2713-0.2713falsefalsefalsetruefalse5truetruefalse-0.2738-0.2738falsefalsefalsetruefalse6truetruefalse-0.2713-0.2713falsefalsefalsetruefalse7truetruefalse-0.2453-0.2453falsefalsefalsetruefalse8truetruefalse-0.2453-0.2453falsefalsefalsetruefalse9truetruefalse-0.0713-0.0713falsefalsefalsetruefalse10truetruefalse-0.0735-0.0735falsefalsefalsetruefalse11truetruefalse-0.0713-0.0713falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse-0.4116-0.4116falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20080rr_AnnualReturn2008truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2453-0.2453falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20082falseRowprimaryElement*11false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.16240.1624falsefalsefalsetruefalse2truetruefalse0.15850.1585falsefalsefalsetruefalse3truetruefalse0.16240.1624falsefalsefalsetruefalse4truetruefalse0.03890.0389falsefalsefalsetruefalse5truetruefalse0.03560.0356falsefalsefalsetruefalse6truetruefalse0.03890.0389falsefalsefalsetruefalse7truetruefalse0.18250.1825falsefalsefalsetruefalse8truetruefalse0.18250.1825falsefalsefalsetruefalse9truetruefalse0.18480.1848falsefalsefalsetruefalse10truetruefalse0.18110.1811falsefalsefalsetruefalse11truetruefalse0.18480.1848falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.35780.3578falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20090rr_AnnualReturn2009truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.18250.1825falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20093falseRowprimaryElement*12false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14880.1488falsefalsefalsetruefalse2truetruefalse0.14630.1463falsefalsefalsetruefalse3truetruefalse0.14880.1488falsefalsefalsetruefalse4truetruefalse0.07170.0717falsefalsefalsetruefalse5truetruefalse0.0710.071falsefalsefalsetruefalse6truetruefalse0.07170.0717falsefalsefalsetruefalse7truetruefalse0.15210.1521falsefalsefalsetruefalse8truetruefalse0.15210.1521falsefalsefalsetruefalse9truetruefalse0.11010.1101falsefalsefalsetruefalse10truetruefalse0.10880.1088falsefalsefalsetruefalse11truetruefalse0.11010.1101falsefalsefalsetruefalse12truetruefalse0.07520.0752falsefalsefalsetruefalse13truetruefalse0.07520.0752falsefalsefalsetruefalse14truetruefalse0.07520.0752falsefalsefalsetruefalse15truetruefalse0.24070.2407falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20100rr_AnnualReturn2010truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.15210.1521falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 201013Annual Total Returns UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000017259MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000047774MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to BarChartData.No authoritative reference available.falsefalseBar Chart [Table]199false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Best Quarter: 11.10% (09/30/09) Worst Quarter: -17.20% (12/31/08)</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart, Closing200false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalsePerformance Table, Heading201false0rr_PerformanceTableNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also shouldshow the returns of an appropriate broadbased securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____). For a Fund that provides annual total returns for only one calendar year or for a Fund that does not include the bar chart because it does not have annual returns for a full calendar year, modify, as appropriate, the narrative explanation required by paragraph (c)(2)(i) (e.g., by stating that the information gives some indication of the risks of an investment in the Fund by comparing the Fund's performance with a broad measure of market performance).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iv -Subsection b falsefalsePerformance Table, Narrative202false0rr_AverageAnnualReturnCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 5 -Subsection b falsefalseAverage Annual Returns, Caption203false0rr_PerformanceTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact ck0000804239_S000017259Member column rr_ProspectusShareClassAxis compact ck0000804239_C000047774Member column rr_PerformanceMeasureAxis compact * row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact ck0000804239_S000017259Member column rr_ProspectusShareClassAxis compact ck0000804239_C000047774Member column rr_PerformanceMeasureAxis compact * row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/PerformanceTableDatafalsefalse020060 - Schedule - Average Annual Total Returns {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_AverageAnnualReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse2falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse3falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse4falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse5falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse6falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse7falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse8falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse9falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse10falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse11falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse12falsetruefalse00Class A Return After Taxes on Distribution and Sale of Fund Sharesfalsefalsefalsetruefalse13falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse14falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse15falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse16falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse17falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse18falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse19falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse20falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse21falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse22falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse23falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse24falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse25falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse26falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse27falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse28falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse29falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse30falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse31falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse32falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse33falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse34falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse35falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse36falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse37falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse38falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse39falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse40falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse41falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse42falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse43falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse44falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse45falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse46falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse47falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse48falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse49falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse50falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse51falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse52falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse53falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse54falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse55falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse56falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse57falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse58falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse59falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse60falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse61falsetruefalse00Russell 2500 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse62falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse63falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund SharesfalsefalsefalsetruefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, LabelfalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.14880.1488falsefalsefalsetruefalse2truetruetrue0.16930.1693falsefalsefalsetruefalse3truetruetrue0.14350.1435falsefalsefalsetruefalse4truetruetrue0.09650.0965falsefalsefalsetruefalse5truetruetrue0.14630.1463falsefalsefalsetruefalse6truetruetrue0.16930.1693falsefalsefalsetruefalse7truetruetrue0.14190.1419falsefalsefalsetruefalse8truetruetrue0.09490.0949falsefalsefalsetruefalse9truetruetrue0.14880.1488falsefalsefalsetruefalse10truetruetrue0.16930.1693falsefalsefalsetruefalse11truetruetrue0.14350.1435falsefalsefalsetruefalse12truetruetrue0.09650.0965falsefalsefalsetruefalse13truetruetrue0.07170.0717falsefalsefalsetruefalse14truetruetrue0.10460.1046falsefalsefalsetruefalse15truetruetrue0.12030.1203falsefalsefalsetruefalse16truetruetrue0.07170.0717falsefalsefalsetruefalse17truetruetrue0.04660.0466falsefalsefalsetruefalse18truetruetrue0.07100.0710falsefalsefalsetruefalse19truetruetrue0.10460.1046falsefalsefalsetruefalse20truetruetrue0.12030.1203falsefalsefalsetruefalse21truetruetrue0.07100.0710falsefalsefalsetruefalse22truetruetrue0.04610.0461falsefalsefalsetruefalse23truetruetrue0.07170.0717falsefalsefalsetruefalse24truetruetrue0.10460.1046falsefalsefalsetruefalse25truetruetrue0.12030.1203falsefalsefalsetruefalse26truetruetrue0.07170.0717falsefalsefalsetruefalse27truetruetrue0.04660.0466falsefalsefalsetruefalse28truetruetrue0.15210.1521falsefalsefalsetruefalse29truetruetrue0.16930.1693falsefalsefalsetruefalse30truetruetrue0.14670.1467falsefalsefalsetruefalse31truetruetrue0.09860.0986falsefalsefalsetruefalse32truetruetrue0.15210.1521falsefalsefalsetruefalse33truetruetrue0.16930.1693falsefalsefalsetruefalse34truetruetrue0.14670.1467falsefalsefalsetruefalse35truetruetrue0.09860.0986falsefalsefalsetruefalse36truetruetrue0.11010.1101falsefalsefalsetruefalse37truetruetrue0.06540.0654falsefalsefalsetruefalse38truetruetrue0.09500.0950falsefalsefalsetruefalse39truetruetrue0.07130.0713falsefalsefalsetruefalse40truetruetrue0.10880.1088falsefalsefalsetruefalse41truetruetrue0.06540.0654falsefalsefalsetruefalse42truetruetrue0.09450.0945falsefalsefalsetruefalse43truetruetrue0.07050.0705falsefalsefalsetruefalse44truetruetrue0.11010.1101falsefalsefalsetruefalse45truetruetrue0.06540.0654falsefalsefalsetruefalse46truetruetrue0.09500.0950falsefalsefalsetruefalse47truetruetrue0.07130.0713falsefalsefalsetruefalse48truetruetrue0.07520.0752falsefalsefalsetruefalse49truetruetrue0.06540.0654falsefalsefalsetruefalse50truetruetrue0.05190.0519falsefalsefalsetruefalse51truetruetrue0.04970.0497falsefalsefalsetruefalse52truetruetrue0.07520.0752falsefalsefalsetruefalse53truetruetrue0.06540.0654falsefalsefalsetruefalse54truetruetrue0.05190.0519falsefalsefalsetruefalse55truetruetrue0.04970.0497falsefalsefalsetruefalse56truetruetrue0.07520.0752falsefalsefalsetruefalse57truetruetrue0.06540.0654falsefalsefalsetruefalse58truetruetrue0.05190.0519falsefalsefalsetruefalse59truetruetrue0.04970.0497falsefalsefalsetruefalse60truetruetrue0.24070.2407falsefalsefalsetruefalse61truetruetrue0.26710.2671falsefalsefalsetruefalse62truetruetrue0.23950.2395falsefalsefalsetruefalse63truetruetrue0.15640.1564falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, 1 YearfalseUSDfalsefalse$3falseColumnprimaryElement*7false0rr_AverageAnnualReturnSinceInceptionrrfalsenadurationNo definition 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USD ($) $eol_0001104659-11-005144_STD_372_20110204_0_396770x-9996087_429423x-9996112http://www.sec.gov/CIK0000804239duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseck0000804239_S000017259Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000017259Memberdei_LegalEntityAxisexplicitMemberfalsefalseck0000804239_C000073429Memberrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073429Memberrr_ProspectusShareClassAxisexplicitMemberiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170pureStandardhttp://www.xbrl.org/2003/instancepure0USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseSIMT Tax-Managed Managed Volatility Fund | SIMT Tax-Managed Managed Volatility Fund - Class G206false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00TAX-MANAGED MANAGED VOLATILITY FUNDfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return, Heading207false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment GoalfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment Objective, Heading208false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>To maximize after-tax returns, but with a lower level of volatility than the broad U.S. equity markets.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseinvestment Objective, Primary209false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and ExpensesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpense, Heading210false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This table describes the fees and expenses that you may pay if you buy and hold Fund shares.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseExpense, Narrative211false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00SHAREHOLDER FEES (fees paid directly from your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees, Caption212false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000017259Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073429Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000017259Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073429Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/ShareholderFeesDatafalsefalse020010 - Schedule - Shareholder Feestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000017259MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073429MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT Tax-Managed Managed Volatility Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000017259Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT Tax-Managed Managed Volatility Fund - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073429Memberrr_ProspectusShareClassAxisexplicitMemberSIMT Tax-Managed Managed Volatility FundSIMT Tax-Managed Managed Volatility Fund - Class Giso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_RedemptionFeeOverRedemptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truetruetrue0.00500.0050[2]falsefalsefalsetruefalse2truetruetrue0.00500.0050[2]falsefalsefalsetruefalse3truetruetrue0.00500.0050[1]falsefalsefalsetruefalse4truetruetrue0.00750.0075[2]falsefalsefalsetruefalse5truetruetrue0.00750.0075[2]falsefalsefalsetruefalse6truetruetrue0.00750.0075[2]falsefalsefalsetruefalse7truetruetrue0.00500.0050[2]falsefalsefalsetruefalse8truetruetrue0.00500.0050[2]falsefalsefalsetruefalse9truetruetrue0.00600.0060[3]falsefalsefalsetruefalse10truetruetrue0.00600.0060[4]falsefalsefalsetruefalse11truetruetrue0.00600.0060[3]falsefalsefalsetruefalse12truetruetrue0.00600.0060[3]falsefalsefalsetruefalse13truetruetrue0.00600.0060[4]falsefalsefalsetruefalse14truetruetrue0.00600.0060[3]falsefalsefalsetruefalse15truetruetrue0.00250.0025[2]falsefalsefalsetruefalse16truetruetrue0.01000.0100[2]falsefalsefalsetruefalseOtherrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph b -Subsection instructions falsefalseRedemption fee0rr_RedemptionFeeOverRedemptiontruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue0.00500.0050falsefalsefalsetruefalseOthernanafalsefalseRedemption fee1(applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $25 million within any thirty (30) day period)11Shareholder Fees UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000017259MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073429MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No authoritative reference available.falsefalseShareholder Fees [Table]213false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses, Caption214false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000017259Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073429Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000017259Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073429Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/OperatingExpensesDatafalsefalse020020 - Schedule - Annual Fund Operating Expensestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000017259MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073429MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT Tax-Managed Managed Volatility Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000017259Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT Tax-Managed Managed Volatility Fund - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073429Memberrr_ProspectusShareClassAxisexplicitMemberSIMT Tax-Managed Managed Volatility FundSIMT Tax-Managed Managed Volatility Fund - Class Giso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00650.0065falsefalsefalsetruefalse2truetruetrue0.00650.0065falsefalsefalsetruefalse3truetruetrue0.00650.0065falsefalsefalsetruefalse4truetruetrue0.00650.0065falsefalsefalsetruefalse5truetruetrue0.00650.0065falsefalsefalsetruefalse6truetruetrue0.00650.0065falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00280.0028falsefalsefalsetruefalse10truetruetrue0.00280.0028falsefalsefalsetruefalse11truetruetrue0.00280.0028falsefalsefalsetruefalse12truetruetrue0.00280.0028falsefalsefalsetruefalse13truetruetrue0.00280.0028falsefalsefalsetruefalse14truetruetrue0.00280.0028falsefalsefalsetruefalse15truetruetrue0.01500.0150falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement Fees0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00650.0065falsefalsefalsetruefalseOthernanafalsefalseManagement Fees2falseRowprimaryElement*4false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.000.00falsefalsefalsetruefalse2truetruetrue0.000.00falsefalsefalsetruefalse3truetruetrue0.00250.0025falsefalsefalsetruefalse4truetruetrue0.000.00falsefalsefalsetruefalse5truetruetrue0.000.00falsefalsefalsetruefalse6truetruetrue0.00250.0025falsefalsefalsetruefalse7truetruetrue0.000.00falsefalsefalsetruefalse8truetruetrue0.00250.0025falsefalsefalsetruefalse9truetruetrue0.000.00falsefalsefalsetruefalse10truetruetrue0.000.00falsefalsefalsetruefalse11truetruetrue0.00250.0025falsefalsefalsetruefalse12truetruetrue0.000.00falsefalsefalsetruefalse13truetruetrue0.000.00falsefalsefalsetruefalse14truetruetrue0.00250.0025falsefalsefalsetruefalse15truetruetrue0.000.00falsefalsefalsetruefalse16truetruetrue0.00250.0025falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution (12b-1) Fees0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsetruefalseOthernanafalsefalseDistribution (12b-1) Fees3falseRowprimaryElement*5false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00640.0064falsefalsefalsetruefalse2truetruetrue0.00890.0089falsefalsefalsetruefalse3truetruetrue0.00640.0064falsefalsefalsetruefalse4truetruetrue0.00670.0067falsefalsefalsetruefalse5truetruetrue0.00920.0092falsefalsefalsetruefalse6truetruetrue0.00670.0067falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00580.0058falsefalsefalsetruefalse10truetruetrue0.00830.0083falsefalsefalsetruefalse11truetruetrue0.00580.0058falsefalsefalsetruefalse12truetruetrue0.00590.0059falsefalsefalsetruefalse13truetruetrue0.00840.0084falsefalsefalsetruefalse14truetruetrue0.00590.0059falsefalsefalsetruefalse15truetruetrue0.00690.0069[2]falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther Expenses0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00650.0065falsefalsefalsetruefalseOthernanafalsefalseOther Expenses4falseRowprimaryElement*7false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01290.0129falsefalsefalsetruefalse2truetruetrue0.01540.0154falsefalsefalsetruefalse3truetruetrue0.01540.0154falsefalsefalsetruefalse4truetruetrue0.01320.0132falsefalsefalsetruefalse5truetruetrue0.01570.0157falsefalsefalsetruefalse6truetruetrue0.01570.0157falsefalsefalsetruefalse7truetruetrue0.01300.0130falsefalsefalsetruefalse8truetruetrue0.01550.0155falsefalsefalsetruefalse9truetruetrue0.00860.0086falsefalsefalsetruefalse10truetruetrue0.01110.0111falsefalsefalsetruefalse11truetruetrue0.01110.0111falsefalsefalsetruefalse12truetruetrue0.00870.0087falsefalsefalsetruefalse13truetruetrue0.01120.0112falsefalsefalsetruefalse14truetruetrue0.01120.0112falsefalsefalsetruefalse15truetruetrue0.02930.0293falsefalsefalsetruefalse16truetruetrue0.01550.0155falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph d -Subsection instructions falsefalseTotal Annual Fund Operating Expenses0rr_ExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01550.0155falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses14Annual Fund Operating Expenses UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000017259MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073429MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Table]215false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00EXAMPLEfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, Heading216false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and that you sell your shares at the end of each period. The Example also assumes that each year your investment has a 5% return, Fund operating expenses remain the same and you reinvest all dividends and distributions.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative217false0rr_ExpenseExampleByYearCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Although your actual costs and returns might be different, your approximate costs of investing $10,000 in the Fund would be:falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, By Year, Caption218false0rr_ExpenseExampleWithRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000017259Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073429Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000017259Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073429Member row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/ExpenseExamplefalsefalse020030 - Schedule - Expense Example {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue131131falsefalsefalsetruefalse2truefalsetrue157157falsefalsefalsetruefalse3truefalsetrue157157falsefalsefalsetruefalse4truefalsetrue134134falsefalsefalsetruefalse5truefalsetrue160160falsefalsefalsetruefalse6truefalsetrue160160falsefalsefalsetruefalse7truefalsetrue132132falsefalsefalsetruefalse8truefalsetrue158158falsefalsefalsetruefalse9truefalsetrue8888falsefalsefalsetruefalse10truefalsetrue113113falsefalsefalsetruefalse11truefalsetrue113113falsefalsefalsetruefalse12truefalsetrue8989falsefalsefalsetruefalse13truefalsetrue114114falsefalsefalsetruefalse14truefalsetrue114114falsefalsefalsetruefalse15truefalsetrue296296falsefalsefalsetruefalse16truefalsetrue158158falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, With Redemption, 1 YearfalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.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:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 3 YearsfalseUSDfalsefalse$3falseColumnprimaryElement*5false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue708708falsefalsefalsetruefalse2truefalsetrue839839falsefalsefalsetruefalse3truefalsetrue839839falsefalsefalsetruefalse4truefalsetrue723723falsefalsefalsetruefalse5truefalsetrue855855falsefalsefalsetruefalse6truefalsetrue855855falsefalsefalsetruefalse7truefalsetrue713713falsefalsefalsetruefalse8truefalsetrue845845falsefalsefalsetruefalse9truefalsetrue477477falsefalsefalsetruefalse10truefalsetrue612612falsefalsefalsetruefalse11truefalsetrue612612falsefalsefalsetruefalse12truefalsetrue482482falsefalsefalsetruefalse13truefalsetrue617617falsefalsefalsetruefalse14truefalsetrue617617falsefalsefalsetruefalse15falsefalsetrue00falsefalsefalsetruefalse16truefalsetrue845845falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 5 YearsfalseUSDfalsefalse$4falseColumnprimaryElement*6false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.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:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 10 YearsfalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000017259MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000073429MemberRowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT Tax-Managed Managed Volatility Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000017259Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT Tax-Managed Managed Volatility Fund - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073429Memberrr_ProspectusShareClassAxisexplicitMemberSIMT Tax-Managed Managed Volatility FundSIMT Tax-Managed Managed Volatility Fund - Class Giso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue158158falsefalsefalsetruefalse2truefalsetrue490490falsefalsefalsetruefalse3truefalsetrue845845falsefalsefalsetruefalse4truefalsetrue18451845falsefalsefalsetruefalseOthernanafalsefalseSIMT Tax-Managed Managed Volatility Fund SIMT Tax-Managed Managed Volatility Fund - Class G41Expense Example (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000017259MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000073429MemberRowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExample.No authoritative reference available.falsefalseExpense Example, With Redemption [Table]219false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00PORTFOLIO TURNOVERfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover, Heading220false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 28% of the average value of its portfolio.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover221false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Investment StrategiesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Heading222false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The Tax-Managed Managed Volatility Fund will typically invest in securities of U.S. companies of all capitalization ranges. These securities may include common stocks, preferred stocks, warrants, depositary receipts and ETFs. Although the Fund will be measured against the Russell 3000 Index, the Fund is expected to have significant sector and market capitalization deviations from the index given its focus on absolute risk as opposed to index relative risk. This could lead to significant performance deviations relative to the index over shorter-term periods. The Fund uses a multi-manager approach, relying on a number of sub-advisers with differing investment approaches to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation (SIMC), the Fund's adviser. Each sub-adviser, in managing its portion of the Fund's assets, intends to achieve returns similar to those of the broad U.S. equity markets in a tax-efficient fashion, but with a lower level of volatility. The Fund seeks to achieve lower volatility by constructing a portfolio of securities that effectively weighs securities based on their total expected risk and return, without regard to market capitalization and industry. This will tend to lead the Fund's sub-advisers to construct portfolios with a low beta relative to the overall U.S. equity market. In addition, the sub-advisers will look to manage the impact of taxes by controlling portfolio turnover levels, selling stocks with the highest tax cost first and opportunistically harvesting losses to offset gains where possible.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Narrative223false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal RisksfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk, Heading224false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Derivatives Risk - The Fund's use of futures contracts is subject to market risk, leverage risk, correlation risk and liquidity risk. Leverage risk and liquidity risk are described below. Market risk is the risk that the market value of an investment may move up and down, sometimes rapidly and unpredictably. Correlation risk is the risk that changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index. Each of these risks could cause the Fund to lose more than the principal amount invested in a derivative instrument. Equity Market Risk - The risk that stock prices will fall over short or extended periods of time. Exchange-Traded Funds (ETFs) Risk - The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio securities. Hedged Strategies Risk - The Fund may employ investment strategies that involve greater risks than the strategies used by typical mutual funds, including short sales and derivative transactions. Although some of the sub-advisers use hedged strategies, there is no assurance that hedged strategies will protect against losses or perform better than non-hedged strategies, and some sub-advisers may use long-only strategies. Investment Style Risk - The risk that securities selected as part of a managed volatility strategy may underperform other segments of the equity markets or the equity markets as a whole. Leverage Risk - The use of leverage can amplify the effects of market volatility on the Fund's share price and may also cause the Fund to liquidate portfolio positions when it would not be advantageous to do so in order to satisfy its obligations. Liquidity Risk - The risk that certain securities may be difficult or impossible to sell at the time and the price that the Fund would like. The Fund may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance. Short Sales Risk - Short sales expose the Fund to the risk that it will be required to buy the security sold short (also known as "covering" the short position) at a time when the security has appreciated in value, thus resulting in a loss to the Fund. Reinvesting proceeds received from short selling may create leverage which can amplify the effects of market volatility on the Fund's share price. Small and Medium Capitalization Risk - The smaller and medium capitalization companies in which the Fund invests may be more vulnerable to adverse business or economic events than larger, more established companies. In particular, small companies may have limited product lines, markets and financial resources, and may depend upon a relatively small management group. Therefore, small cap and medium cap stocks may be more volatile than those of larger companies. Small cap stocks may be traded over the counter or listed on an exchange. Taxation Risk - The Fund is managed to minimize tax consequences to investors, but will likely earn taxable income and gains from time to time. Loss of money is a risk of investing in the Fund.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk, Narrative225false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Performance InformationfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table, Heading226false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>As of January 31, 2011, Class G Shares of the Fund had not commenced operations, and did not have a performance history. The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1 year, and since the Fund's inception, compared with those of a broad measure of market performance. Since Class G Shares are invested in the same portfolio of securities, return for Class G Shares will be substantially similar to those of Class A Shares, shown here, and will differ only to the extent that Class G Shares have higher expenses. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance, Narrative227false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000017259Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073429Member row primary compact * ~</div>falsefalseBarChart8.jpg<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000017259Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073429Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/BarChartDatafalsefalse020050 - Schedule - Annual Total Returnstruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000017259MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073429MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT Tax-Managed Managed Volatility Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000017259Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT Tax-Managed Managed Volatility Fund - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073429Memberrr_ProspectusShareClassAxisexplicitMemberSIMT Tax-Managed Managed Volatility FundSIMT Tax-Managed Managed Volatility Fund - Class Giso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*10false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2908-0.2908falsefalsefalsetruefalse2truetruefalse-0.2929-0.2929falsefalsefalsetruefalse3truetruefalse-0.2908-0.2908falsefalsefalsetruefalse4truetruefalse-0.2713-0.2713falsefalsefalsetruefalse5truetruefalse-0.2738-0.2738falsefalsefalsetruefalse6truetruefalse-0.2713-0.2713falsefalsefalsetruefalse7truetruefalse-0.2453-0.2453falsefalsefalsetruefalse8truetruefalse-0.2453-0.2453falsefalsefalsetruefalse9truetruefalse-0.0713-0.0713falsefalsefalsetruefalse10truetruefalse-0.0735-0.0735falsefalsefalsetruefalse11truetruefalse-0.0713-0.0713falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse-0.4116-0.4116falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20080rr_AnnualReturn2008truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2453-0.2453falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20082falseRowprimaryElement*11false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.16240.1624falsefalsefalsetruefalse2truetruefalse0.15850.1585falsefalsefalsetruefalse3truetruefalse0.16240.1624falsefalsefalsetruefalse4truetruefalse0.03890.0389falsefalsefalsetruefalse5truetruefalse0.03560.0356falsefalsefalsetruefalse6truetruefalse0.03890.0389falsefalsefalsetruefalse7truetruefalse0.18250.1825falsefalsefalsetruefalse8truetruefalse0.18250.1825falsefalsefalsetruefalse9truetruefalse0.18480.1848falsefalsefalsetruefalse10truetruefalse0.18110.1811falsefalsefalsetruefalse11truetruefalse0.18480.1848falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.35780.3578falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20090rr_AnnualReturn2009truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.18250.1825falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20093falseRowprimaryElement*12false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14880.1488falsefalsefalsetruefalse2truetruefalse0.14630.1463falsefalsefalsetruefalse3truetruefalse0.14880.1488falsefalsefalsetruefalse4truetruefalse0.07170.0717falsefalsefalsetruefalse5truetruefalse0.0710.071falsefalsefalsetruefalse6truetruefalse0.07170.0717falsefalsefalsetruefalse7truetruefalse0.15210.1521falsefalsefalsetruefalse8truetruefalse0.15210.1521falsefalsefalsetruefalse9truetruefalse0.11010.1101falsefalsefalsetruefalse10truetruefalse0.10880.1088falsefalsefalsetruefalse11truetruefalse0.11010.1101falsefalsefalsetruefalse12truetruefalse0.07520.0752falsefalsefalsetruefalse13truetruefalse0.07520.0752falsefalsefalsetruefalse14truetruefalse0.07520.0752falsefalsefalsetruefalse15truetruefalse0.24070.2407falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20100rr_AnnualReturn2010truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.15210.1521falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 201013Annual Total Returns UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000017259MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073429MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to BarChartData.No authoritative reference available.falsefalseBar Chart [Table]228false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Best Quarter: 11.10% (09/30/09) Worst Quarter: -17.20% (12/31/08)</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart, Closing229false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalsePerformance Table, Heading230false0rr_PerformanceTableNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This table compares the Fund's average annual total returns for Class A Shares to those of the Russell 3000 Index. The Russell 3000 Index measures the performance of the largest 3,000 U.S. companies representing approximately 98% of the investable U.S. equity market. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also shouldshow the returns of an appropriate broadbased securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____). For a Fund that provides annual total returns for only one calendar year or for a Fund that does not include the bar chart because it does not have annual returns for a full calendar year, modify, as appropriate, the narrative explanation required by paragraph (c)(2)(i) (e.g., by stating that the information gives some indication of the risks of an investment in the Fund by comparing the Fund's performance with a broad measure of market performance).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iv -Subsection b falsefalsePerformance Table, Narrative231false0rr_AverageAnnualReturnCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 5 -Subsection b falsefalseAverage Annual Returns, Caption232false0rr_PerformanceTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact ck0000804239_S000017259Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073429Member column rr_PerformanceMeasureAxis compact * row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact ck0000804239_S000017259Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073429Member column rr_PerformanceMeasureAxis compact * row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/PerformanceTableDatafalsefalse020060 - Schedule - Average Annual Total Returns {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_AverageAnnualReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse2falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse3falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse4falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse5falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse6falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse7falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse8falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse9falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse10falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse11falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse12falsetruefalse00Class A Return After Taxes on Distribution and Sale of Fund Sharesfalsefalsefalsetruefalse13falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse14falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse15falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse16falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse17falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse18falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse19falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse20falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse21falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse22falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse23falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse24falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse25falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse26falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse27falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse28falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse29falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse30falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse31falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse32falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse33falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse34falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse35falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse36falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse37falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse38falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse39falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse40falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse41falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse42falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse43falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse44falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse45falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse46falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse47falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse48falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse49falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse50falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse51falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse52falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse53falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse54falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse55falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse56falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse57falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse58falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse59falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse60falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse61falsetruefalse00Russell 2500 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse62falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse63falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund SharesfalsefalsefalsetruefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, LabelfalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition 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Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return, Heading236false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment GoalfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment Objective, Heading237false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Current income consistent with the preservation of capital.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseinvestment Objective, Primary238false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and ExpensesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpense, Heading239false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This table describes the fees and expenses that you may pay if you buy and hold Fund shares.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseExpense, Narrative240false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00SHAREHOLDER FEES (fees paid directly from your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees, Caption241false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018187Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018187Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/ShareholderFeesDatafalsefalse020010 - Schedule - Shareholder Feestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006667MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000018187MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT CORE FIXED INCOME FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006667Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT CORE FIXED INCOME FUND - CLASS Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000018187Memberrr_ProspectusShareClassAxisexplicitMemberSIMT CORE FIXED INCOME FUNDSIMT CORE FIXED INCOME FUND - CLASS Aiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_RedemptionFeeOverRedemptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truetruetrue0.00500.0050[2]falsefalsefalsetruefalse2truetruetrue0.00500.0050[2]falsefalsefalsetruefalse3truetruetrue0.00500.0050[1]falsefalsefalsetruefalse4truetruetrue0.00750.0075[2]falsefalsefalsetruefalse5truetruetrue0.00750.0075[2]falsefalsefalsetruefalse6truetruetrue0.00750.0075[2]falsefalsefalsetruefalse7truetruetrue0.00500.0050[2]falsefalsefalsetruefalse8truetruetrue0.00500.0050[2]falsefalsefalsetruefalse9truetruetrue0.00600.0060[3]falsefalsefalsetruefalse10truetruetrue0.00600.0060[4]falsefalsefalsetruefalse11truetruetrue0.00600.0060[3]falsefalsefalsetruefalse12truetruetrue0.00600.0060[3]falsefalsefalsetruefalse13truetruetrue0.00600.0060[4]falsefalsefalsetruefalse14truetruetrue0.00600.0060[3]falsefalsefalsetruefalse15truetruetrue0.00250.0025[2]falsefalsefalsetruefalse16truetruetrue0.01000.0100[2]falsefalsefalsetruefalseOtherrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph b -Subsection instructions falsefalseRedemption fee0rr_RedemptionFeeOverRedemptiontruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue0.00600.0060falsefalsefalsetruefalseOthernanafalsefalseRedemption fee1(applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $50 million within any thirty (30) day period)11Shareholder Fees UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006667MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000018187MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No authoritative reference available.falsefalseShareholder Fees [Table]242false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses, Caption243false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018187Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018187Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/OperatingExpensesDatafalsefalse020020 - Schedule - Annual Fund Operating Expensestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006667MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000018187MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT CORE FIXED INCOME FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006667Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT CORE FIXED INCOME FUND - CLASS Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000018187Memberrr_ProspectusShareClassAxisexplicitMemberSIMT CORE FIXED INCOME FUNDSIMT CORE FIXED INCOME FUND - CLASS Aiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00650.0065falsefalsefalsetruefalse2truetruetrue0.00650.0065falsefalsefalsetruefalse3truetruetrue0.00650.0065falsefalsefalsetruefalse4truetruetrue0.00650.0065falsefalsefalsetruefalse5truetruetrue0.00650.0065falsefalsefalsetruefalse6truetruetrue0.00650.0065falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00280.0028falsefalsefalsetruefalse10truetruetrue0.00280.0028falsefalsefalsetruefalse11truetruetrue0.00280.0028falsefalsefalsetruefalse12truetruetrue0.00280.0028falsefalsefalsetruefalse13truetruetrue0.00280.0028falsefalsefalsetruefalse14truetruetrue0.00280.0028falsefalsefalsetruefalse15truetruetrue0.01500.0150falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement Fees0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00280.0028falsefalsefalsetruefalseOthernanafalsefalseManagement Fees2falseRowprimaryElement*4false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.000.00falsefalsefalsetruefalse2truetruetrue0.000.00falsefalsefalsetruefalse3truetruetrue0.00250.0025falsefalsefalsetruefalse4truetruetrue0.000.00falsefalsefalsetruefalse5truetruetrue0.000.00falsefalsefalsetruefalse6truetruetrue0.00250.0025falsefalsefalsetruefalse7truetruetrue0.000.00falsefalsefalsetruefalse8truetruetrue0.00250.0025falsefalsefalsetruefalse9truetruetrue0.000.00falsefalsefalsetruefalse10truetruetrue0.000.00falsefalsefalsetruefalse11truetruetrue0.00250.0025falsefalsefalsetruefalse12truetruetrue0.000.00falsefalsefalsetruefalse13truetruetrue0.000.00falsefalsefalsetruefalse14truetruetrue0.00250.0025falsefalsefalsetruefalse15truetruetrue0.000.00falsefalsefalsetruefalse16truetruetrue0.00250.0025falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution (12b-1) Fees0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.000.00falsefalsefalsetruefalseOthernanafalsefalseDistribution (12b-1) Fees3falseRowprimaryElement*5false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00640.0064falsefalsefalsetruefalse2truetruetrue0.00890.0089falsefalsefalsetruefalse3truetruetrue0.00640.0064falsefalsefalsetruefalse4truetruetrue0.00670.0067falsefalsefalsetruefalse5truetruetrue0.00920.0092falsefalsefalsetruefalse6truetruetrue0.00670.0067falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00580.0058falsefalsefalsetruefalse10truetruetrue0.00830.0083falsefalsefalsetruefalse11truetruetrue0.00580.0058falsefalsefalsetruefalse12truetruetrue0.00590.0059falsefalsefalsetruefalse13truetruetrue0.00840.0084falsefalsefalsetruefalse14truetruetrue0.00590.0059falsefalsefalsetruefalse15truetruetrue0.00690.0069[2]falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther Expenses0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00580.0058falsefalsefalsetruefalseOthernanafalsefalseOther Expenses4falseRowprimaryElement*7false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01290.0129falsefalsefalsetruefalse2truetruetrue0.01540.0154falsefalsefalsetruefalse3truetruetrue0.01540.0154falsefalsefalsetruefalse4truetruetrue0.01320.0132falsefalsefalsetruefalse5truetruetrue0.01570.0157falsefalsefalsetruefalse6truetruetrue0.01570.0157falsefalsefalsetruefalse7truetruetrue0.01300.0130falsefalsefalsetruefalse8truetruetrue0.01550.0155falsefalsefalsetruefalse9truetruetrue0.00860.0086falsefalsefalsetruefalse10truetruetrue0.01110.0111falsefalsefalsetruefalse11truetruetrue0.01110.0111falsefalsefalsetruefalse12truetruetrue0.00870.0087falsefalsefalsetruefalse13truetruetrue0.01120.0112falsefalsefalsetruefalse14truetruetrue0.01120.0112falsefalsefalsetruefalse15truetruetrue0.02930.0293falsefalsefalsetruefalse16truetruetrue0.01550.0155falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph d -Subsection instructions falsefalseTotal Annual Fund Operating Expenses0rr_ExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00860.0086falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses14Annual Fund Operating Expenses UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006667MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000018187MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Table]244false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00EXAMPLEfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, Heading245false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and that you sell your shares at the end of each period. The Example also assumes that each year your investment has a 5% return, Fund operating expenses remain the same and you reinvest all dividends and distributions.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative246false0rr_ExpenseExampleByYearCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Although your actual costs and returns might be different, your approximate costs of investing $10,000 in the Fund would be:falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, By Year, Caption247false0rr_ExpenseExampleWithRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018187Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018187Member row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/ExpenseExamplefalsefalse020030 - Schedule - Expense Example {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue131131falsefalsefalsetruefalse2truefalsetrue157157falsefalsefalsetruefalse3truefalsetrue157157falsefalsefalsetruefalse4truefalsetrue134134falsefalsefalsetruefalse5truefalsetrue160160falsefalsefalsetruefalse6truefalsetrue160160falsefalsefalsetruefalse7truefalsetrue132132falsefalsefalsetruefalse8truefalsetrue158158falsefalsefalsetruefalse9truefalsetrue8888falsefalsefalsetruefalse10truefalsetrue113113falsefalsefalsetruefalse11truefalsetrue113113falsefalsefalsetruefalse12truefalsetrue8989falsefalsefalsetruefalse13truefalsetrue114114falsefalsefalsetruefalse14truefalsetrue114114falsefalsefalsetruefalse15truefalsetrue296296falsefalsefalsetruefalse16truefalsetrue158158falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, With Redemption, 1 YearfalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.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:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 3 YearsfalseUSDfalsefalse$3falseColumnprimaryElement*5false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue708708falsefalsefalsetruefalse2truefalsetrue839839falsefalsefalsetruefalse3truefalsetrue839839falsefalsefalsetruefalse4truefalsetrue723723falsefalsefalsetruefalse5truefalsetrue855855falsefalsefalsetruefalse6truefalsetrue855855falsefalsefalsetruefalse7truefalsetrue713713falsefalsefalsetruefalse8truefalsetrue845845falsefalsefalsetruefalse9truefalsetrue477477falsefalsefalsetruefalse10truefalsetrue612612falsefalsefalsetruefalse11truefalsetrue612612falsefalsefalsetruefalse12truefalsetrue482482falsefalsefalsetruefalse13truefalsetrue617617falsefalsefalsetruefalse14truefalsetrue617617falsefalsefalsetruefalse15falsefalsetrue00falsefalsefalsetruefalse16truefalsetrue845845falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 5 YearsfalseUSDfalsefalse$4falseColumnprimaryElement*6false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue15561556falsefalsefalsetruefalse2truefalsetrue18341834falsefalsefalsetruefalse3truefalsetrue18341834falsefalsefalsetruefalse4truefalsetrue15901590falsefalsefalsetruefalse5truefalsetrue18671867falsefalsefalsetruefalse6truefalsetrue18671867falsefalsefalsetruefalse7truefalsetrue15681568falsefalsefalsetruefalse8truefalsetrue18451845falsefalsefalsetruefalse9truefalsetrue10611061falsefalsefalsetruefalse10truefalsetrue13521352falsefalsefalsetruefalse11truefalsetrue13521352falsefalsefalsetruefalse12truefalsetrue10731073falsefalsefalsetruefalse13truefalsetrue13631363falsefalsefalsetruefalse14truefalsetrue13631363falsefalsefalsetruefalse15falsefalsetrue00falsefalsefalsetruefalse16truefalsetrue18451845falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 10 YearsfalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006667MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000018187MemberRowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT CORE FIXED INCOME FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006667Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT CORE FIXED INCOME FUND - CLASS Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000018187Memberrr_ProspectusShareClassAxisexplicitMemberSIMT CORE FIXED INCOME FUNDSIMT CORE FIXED INCOME FUND - CLASS Aiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue8888falsefalsefalsetruefalse2truefalsetrue274274falsefalsefalsetruefalse3truefalsetrue477477falsefalsefalsetruefalse4truefalsetrue10611061falsefalsefalsetruefalseOthernanafalsefalseSIMT CORE FIXED INCOME FUND SIMT CORE FIXED INCOME FUND - CLASS A41Expense Example (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006667MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000018187MemberRowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExample.No authoritative reference available.falsefalseExpense Example, With Redemption [Table]248false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00PORTFOLIO TURNOVERfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover, Heading249false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 283% of the average value of its portfolio.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover250false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Investment StrategiesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Heading251false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Under normal circumstances, the Core Fixed Income Fund will invest at least 80% of its net assets in fixed income securities. The Fund will invest primarily in investment and non-investment grade U.S. and foreign corporate and government fixed income securities, including emerging market, asset-backed securities and mortgage-backed securities. The Fund may invest in securities denominated in either U.S. dollars or foreign currency. The Fund uses a multi-manager approach, relying upon a number of sub-advisers with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation (SIMC), the Fund's adviser. Sub-advisers are selected for their expertise in managing various kinds of fixed income securities, and each sub-adviser makes investment decisions based on an analysis of yield trends, credit ratings, and other factors in accordance with its particular discipline. The Fund may also invest in futures contracts, forward contracts and swaps for speculative or hedging purposes. Futures, forwards and swaps are used to synthetically obtain exposure to securities or baskets of securities and to manage the Fund's interest rate duration and yield curve exposure. These derivatives are also used to mitigate the Fund's overall level of risk and/or the Fund's risk to particular types of securities, currencies or market segments. Interest rate swaps are further used to manage the Fund's yield spread sensitivity. When the Fund seeks to take an active long or short position with respect to the likelihood of an event of default of a security or basket of securities, the Fund may use credit default swaps. The Fund may buy credit default swaps in an attempt to manage credit risk where the Fund has credit exposure to an issuer and the Fund may sell credit default swaps to more efficiently gain credit exposure to such security or basket of securities. The sub-advisers may also engage in currency transactions using futures and foreign currency forward contracts either to seek to hedge the Fund's currency exposure or to enhance the Fund's returns. The Fund may take long and short positions in foreign currencies in excess of the value of the Fund's assets denominated in a particular currency or when the Fund does not own assets denominated in that currency. The Fund will invest primarily in investment grade securities (those rated AAA, AA, A and BBB-). However, the Fund may invest in non-rated securities or securities rated below investment grade (BB+, B and CCC). The Fund also invests a portion of its assets in bank loans, which are, generally, non-investment grade (junk bond) floating rate instruments. The Fund may invest in bank loans in the form of participations in the loans (participations) and assignments of all or a portion of the loans from third parties (assignments). While each sub-adviser chooses securities of different types and maturities, the Fund in the aggregate generally will have a dollar-weighted average duration that is consistent with that of the broad U.S. fixed income market as represented by the Barclays Capital U.S. Aggregate Bond Index. The dollar-weighted average duration of the Barclays Capital U.S. Aggregate Bond Index varies significantly over time, but as of December 31, 2010 it was 4.98 years. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security's price to changes in interest rates.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Narrative252false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal RisksfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk, Heading253false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Asset-backed Securities Risk - Payment of principal and interest on asset-backed securities is dependent largely on the cash flows generated by the assets backing the securities and asset-backed securities may not have the benefit of any security interest in the related assets. Bank Loans Risk - With respect to bank loans, the Fund will assume the credit risk of both the borrower and the lender that is selling the participation. The Fund may also have difficulty disposing of bank loans because, in certain cases, the market for such instruments is not highly liquid. Below Investment Grade Securities Risk - Fixed income securities rated below investment grade (junk bonds) involve greater risks of default or downgrade and are more volatile than investment grade securities. Corporate Fixed Income Securities Risk - Corporate fixed income securities respond to economic developments, especially changes in interest rates, as well as perceptions of the creditworthiness and business prospects of individual issuers. Credit Risk - The risk that the issuer of a security, or the counterparty to a contract, will default or otherwise become unable to honor a financial obligation. Currency Risk - Due to the Fund's active positions in currencies, it will be subject to the risk that currency exchange rates may fluctuate in response to, among other things, changes in interest rates, intervention (or failure to intervene) by U.S. or foreign governments, central banks or supranational entities, or by the imposition of currency controls or other political developments in the United States or abroad. Derivatives Risk - The Fund's use of futures, forwards and swaps is subject to market risk, leverage risk, correlation risk and liquidity risk. Leverage risk and liquidity risk are described below. Market risk is the risk that the market value of an investment may move up and down, sometimes rapidly and unpredictably. Correlation risk is the risk that changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index. The Fund's use of forwards and swap agreements is also subject to credit risk and valuation risk. Valuation risk is the risk that the derivative may be difficult to value and/or valued incorrectly. Credit risk is described above. Each of these risks could cause the Fund to lose more than the principal amount invested in a derivative instrument. Exchange-Traded Funds (ETFs) Risk - The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio securities. Fixed Income Market Risk - The prices of the Fund's fixed income securities respond to economic developments, particularly interest rate changes, as well as to perceptions about the creditworthiness of individual issuers, including governments and their agencies. In the case of foreign securities, price fluctuations will reflect international economic and political events, as well as changes in currency valuations relative to the U.S. dollar. Foreign Investment/Emerging Markets Risk - The risk that non-U.S. securities may be subject to additional risks due to, among other things, political, social and economic developments abroad, currency movements, and different legal, regulatory and tax environments. These additional risks may be heightened with respect to emerging market countries since political turmoil and rapid changes in economic conditions are more likely to occur in these countries. Interest Rate Risk - The risk that the value of fixed income securities, including U.S. Government securities, will fall due to rising interest rates. Investment Style Risk - The risk that U.S. fixed income securities may underperform other segments of the fixed income markets or the fixed income markets as a whole. Leverage Risk - The use of leverage can amplify the effects of market volatility on the Fund's share price and may also cause the Fund to liquidate portfolio positions when it would not be advantageous to do so in order to satisfy its obligations. Liquidity Risk - The risk that certain securities may be difficult or impossible to sell at the time and the price that the Fund would like. The Fund may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance. Mortgage-backed Securities Risk - Mortgage-backed securities are affected by, among other things, interest rate changes and the possibility of prepayment of the underlying mortgage loans. Mortgage-backed securities are also subject to the risk that underlying borrowers will be unable to meet their obligations. Portfolio Turnover Risk - Due to its investment strategy, the Fund may buy and sell securities frequently. This may result in higher transaction costs and additional capital gains tax liabilities. U.S. Government Securities Risk - Although U.S. Government securities are considered to be among the safest investments, they are not guaranteed against price movements due to changing interest rates. Obligations issued by some U.S. Government agencies are backed by the U.S. Treasury, while others are backed solely by the ability of the agency to borrow from the U.S. Treasury or by the agency's own resources. Loss of money is a risk of investing in the Fund.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk, Narrative254false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Performance InformationfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table, Heading255false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years, and since the Fund's inception, compared with those of a broad measure of market performance. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance, Narrative256false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018187Member row primary compact * ~</div>falsefalseBarChart9.jpg<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018187Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/BarChartDatafalsefalse020050 - Schedule - Annual Total Returnstruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006667MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000018187MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT CORE FIXED INCOME FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006667Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT CORE FIXED INCOME FUND - CLASS Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000018187Memberrr_ProspectusShareClassAxisexplicitMemberSIMT CORE FIXED INCOME FUNDSIMT CORE FIXED INCOME FUND - CLASS Aiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_AnnualReturn2001rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00falsefalsefalsetruefalse2falsetruefalse00falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.06950.0695falsefalsefalsetruefalse10truetruefalse0.06560.0656falsefalsefalsetruefalse11truetruefalse0.06950.0695falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse-0.0296-0.0296falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20010rr_AnnualReturn2001truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.06950.0695falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20012falseRowprimaryElement*4false0rr_AnnualReturn2002rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00falsefalsefalsetruefalse2falsetruefalse00falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.09100.0910falsefalsefalsetruefalse10truetruefalse0.08830.0883falsefalsefalsetruefalse11truetruefalse0.09100.0910falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse-0.1912-0.1912falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20020rr_AnnualReturn2002truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.09100.0910falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20023falseRowprimaryElement*5false0rr_AnnualReturn2003rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00falsefalsefalsetruefalse2falsetruefalse00falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.05320.0532falsefalsefalsetruefalse10truetruefalse0.05060.0506falsefalsefalsetruefalse11truetruefalse0.05320.0532falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.4870.487falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20030rr_AnnualReturn2003truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05320.0532falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20034falseRowprimaryElement*6false0rr_AnnualReturn2004rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00falsefalsefalsetruefalse2falsetruefalse00falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.04660.0466falsefalsefalsetruefalse10truetruefalse0.04410.0441falsefalsefalsetruefalse11truetruefalse0.04660.0466falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.16620.1662falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20040rr_AnnualReturn2004truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.04660.0466falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20045falseRowprimaryElement*7false0rr_AnnualReturn2005rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05780.0578falsefalsefalsetruefalse2truetruefalse0.05380.0538falsefalsefalsetruefalse3truetruefalse0.05780.0578falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.02180.0218falsefalsefalsetruefalse10truetruefalse0.01830.0183falsefalsefalsetruefalse11truetruefalse0.02180.0218falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.06840.0684falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20050rr_AnnualReturn2005truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.02180.0218falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20056falseRowprimaryElement*8false0rr_AnnualReturn2006rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.13750.1375falsefalsefalsetruefalse2truetruefalse0.13320.1332falsefalsefalsetruefalse3truetruefalse0.13750.1375falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.04550.0455falsefalsefalsetruefalse10truetruefalse0.04390.0439falsefalsefalsetruefalse11truetruefalse0.04550.0455falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.12340.1234falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20060rr_AnnualReturn2006truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.04550.0455falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20067falseRowprimaryElement*9false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.08270.0827falsefalsefalsetruefalse2truetruefalse0.0790.079falsefalsefalsetruefalse3truetruefalse0.08270.0827falsefalsefalsetruefalse4truetruefalse0.00030.0003falsefalsefalsetruefalse5truetruefalse-0.0039-0.0039falsefalsefalsetruefalse6truetruefalse0.00030.0003falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.04040.0404falsefalsefalsetruefalse10truetruefalse0.03780.0378falsefalsefalsetruefalse11truetruefalse0.04040.0404falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.01650.0165falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20070rr_AnnualReturn2007truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.04040.0404falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20078falseRowprimaryElement*10false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2908-0.2908falsefalsefalsetruefalse2truetruefalse-0.2929-0.2929falsefalsefalsetruefalse3truetruefalse-0.2908-0.2908falsefalsefalsetruefalse4truetruefalse-0.2713-0.2713falsefalsefalsetruefalse5truetruefalse-0.2738-0.2738falsefalsefalsetruefalse6truetruefalse-0.2713-0.2713falsefalsefalsetruefalse7truetruefalse-0.2453-0.2453falsefalsefalsetruefalse8truetruefalse-0.2453-0.2453falsefalsefalsetruefalse9truetruefalse-0.0713-0.0713falsefalsefalsetruefalse10truetruefalse-0.0735-0.0735falsefalsefalsetruefalse11truetruefalse-0.0713-0.0713falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse-0.4116-0.4116falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20080rr_AnnualReturn2008truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.0713-0.0713falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20089falseRowprimaryElement*11false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.16240.1624falsefalsefalsetruefalse2truetruefalse0.15850.1585falsefalsefalsetruefalse3truetruefalse0.16240.1624falsefalsefalsetruefalse4truetruefalse0.03890.0389falsefalsefalsetruefalse5truetruefalse0.03560.0356falsefalsefalsetruefalse6truetruefalse0.03890.0389falsefalsefalsetruefalse7truetruefalse0.18250.1825falsefalsefalsetruefalse8truetruefalse0.18250.1825falsefalsefalsetruefalse9truetruefalse0.18480.1848falsefalsefalsetruefalse10truetruefalse0.18110.1811falsefalsefalsetruefalse11truetruefalse0.18480.1848falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.35780.3578falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20090rr_AnnualReturn2009truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.18480.1848falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 200910falseRowprimaryElement*12false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14880.1488falsefalsefalsetruefalse2truetruefalse0.14630.1463falsefalsefalsetruefalse3truetruefalse0.14880.1488falsefalsefalsetruefalse4truetruefalse0.07170.0717falsefalsefalsetruefalse5truetruefalse0.0710.071falsefalsefalsetruefalse6truetruefalse0.07170.0717falsefalsefalsetruefalse7truetruefalse0.15210.1521falsefalsefalsetruefalse8truetruefalse0.15210.1521falsefalsefalsetruefalse9truetruefalse0.11010.1101falsefalsefalsetruefalse10truetruefalse0.10880.1088falsefalsefalsetruefalse11truetruefalse0.11010.1101falsefalsefalsetruefalse12truetruefalse0.07520.0752falsefalsefalsetruefalse13truetruefalse0.07520.0752falsefalsefalsetruefalse14truetruefalse0.07520.0752falsefalsefalsetruefalse15truetruefalse0.24070.2407falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20100rr_AnnualReturn2010truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.11010.1101falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 2010110Annual Total Returns UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006667MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000018187MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to BarChartData.No authoritative reference available.falsefalseBar Chart [Table]257false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Best Quarter: 8.12% (09/30/09) Worst Quarter: -3.23% (09/30/08)</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart, Closing258false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalsePerformance Table, Heading259false0rr_PerformanceTableNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also shouldshow the returns of an appropriate broadbased securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____). For a Fund that provides annual total returns for only one calendar year or for a Fund that does not include the bar chart because it does not have annual returns for a full calendar year, modify, as appropriate, the narrative explanation required by paragraph (c)(2)(i) (e.g., by stating that the information gives some indication of the risks of an investment in the Fund by comparing the Fund's performance with a broad measure of market performance).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iv -Subsection b falsefalsePerformance Table, Narrative260false0rr_AverageAnnualReturnCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 5 -Subsection b falsefalseAverage Annual Returns, Caption261false0rr_PerformanceTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018187Member column rr_PerformanceMeasureAxis compact * row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018187Member column rr_PerformanceMeasureAxis compact * row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/PerformanceTableDatafalsefalse020060 - Schedule - Average Annual Total Returns {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_AverageAnnualReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse2falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse3falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse4falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse5falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse6falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse7falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse8falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse9falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse10falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse11falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse12falsetruefalse00Class A Return After Taxes on Distribution and Sale of Fund Sharesfalsefalsefalsetruefalse13falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse14falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse15falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse16falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse17falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse18falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse19falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse20falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse21falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse22falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse23falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse24falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse25falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse26falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse27falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse28falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse29falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse30falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse31falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse32falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse33falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse34falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse35falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse36falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse37falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse38falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse39falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse40falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse41falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse42falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse43falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse44falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse45falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse46falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse47falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse48falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse49falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse50falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse51falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse52falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse53falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse54falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse55falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse56falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse57falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse58falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse59falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse60falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse61falsetruefalse00Russell 2500 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse62falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse63falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund SharesfalsefalsefalsetruefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, LabelfalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.14880.1488falsefalsefalsetruefalse2truetruetrue0.16930.1693falsefalsefalsetruefalse3truetruetrue0.14350.1435falsefalsefalsetruefalse4truetruetrue0.09650.0965falsefalsefalsetruefalse5truetruetrue0.14630.1463falsefalsefalsetruefalse6truetruetrue0.16930.1693falsefalsefalsetruefalse7truetruetrue0.14190.1419falsefalsefalsetruefalse8truetruetrue0.09490.0949falsefalsefalsetruefalse9truetruetrue0.14880.1488falsefalsefalsetruefalse10truetruetrue0.16930.1693falsefalsefalsetruefalse11truetruetrue0.14350.1435falsefalsefalsetruefalse12truetruetrue0.09650.0965falsefalsefalsetruefalse13truetruetrue0.07170.0717falsefalsefalsetruefalse14truetruetrue0.10460.1046falsefalsefalsetruefalse15truetruetrue0.12030.1203falsefalsefalsetruefalse16truetruetrue0.07170.0717falsefalsefalsetruefalse17truetruetrue0.04660.0466falsefalsefalsetruefalse18truetruetrue0.07100.0710falsefalsefalsetruefalse19truetruetrue0.10460.1046falsefalsefalsetruefalse20truetruetrue0.12030.1203falsefalsefalsetruefalse21truetruetrue0.07100.0710falsefalsefalsetruefalse22truetruetrue0.04610.0461falsefalsefalsetruefalse23truetruetrue0.07170.0717falsefalsefalsetruefalse24truetruetrue0.10460.1046falsefalsefalsetruefalse25truetruetrue0.12030.1203falsefalsefalsetruefalse26truetruetrue0.07170.0717falsefalsefalsetruefalse27truetruetrue0.04660.0466falsefalsefalsetruefalse28truetruetrue0.15210.1521falsefalsefalsetruefalse29truetruetrue0.16930.1693falsefalsefalsetruefalse30truetruetrue0.14670.1467falsefalsefalsetruefalse31truetruetrue0.09860.0986falsefalsefalsetruefalse32truetruetrue0.15210.1521falsefalsefalsetruefalse33truetruetrue0.16930.1693falsefalsefalsetruefalse34truetruetrue0.14670.1467falsefalsefalsetruefalse35truetruetrue0.09860.0986falsefalsefalsetruefalse36truetruetrue0.11010.1101falsefalsefalsetruefalse37truetruetrue0.06540.0654falsefalsefalsetruefalse38truetruetrue0.09500.0950falsefalsefalsetruefalse39truetruetrue0.07130.0713falsefalsefalsetruefalse40truetruetrue0.10880.1088falsefalsefalsetruefalse41truetruetrue0.06540.0654falsefalsefalsetruefalse42truetruetrue0.09450.0945falsefalsefalsetruefalse43truetruetrue0.07050.0705falsefalsefalsetruefalse44truetruetrue0.11010.1101falsefalsefalsetruefalse45truetruetrue0.06540.0654falsefalsefalsetruefalse46truetruetrue0.09500.0950falsefalsefalsetruefalse47truetruetrue0.07130.0713falsefalsefalsetruefalse48truetruetrue0.07520.0752falsefalsefalsetruefalse49truetruetrue0.06540.0654falsefalsefalsetruefalse50truetruetrue0.05190.0519falsefalsefalsetruefalse51truetruetrue0.04970.0497falsefalsefalsetruefalse52truetruetrue0.07520.0752falsefalsefalsetruefalse53truetruetrue0.06540.0654falsefalsefalsetruefalse54truetruetrue0.05190.0519falsefalsefalsetruefalse55truetruetrue0.04970.0497falsefalsefalsetruefalse56truetruetrue0.07520.0752falsefalsefalsetruefalse57truetruetrue0.06540.0654falsefalsefalsetruefalse58truetruetrue0.05190.0519falsefalsefalsetruefalse59truetruetrue0.04970.0497falsefalsefalsetruefalse60truetruetrue0.24070.2407falsefalsefalsetruefalse61truetruetrue0.26710.2671falsefalsefalsetruefalse62truetruetrue0.23950.2395falsefalsefalsetruefalse63truetruetrue0.15640.1564falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, 1 YearfalseUSDfalsefalse$3falseColumnprimaryElement*5false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.03130.0313falsefalsefalsetruefalse2truetruetrue0.02740.0274falsefalsefalsetruefalse3truetruetrue0.02580.0258falsefalsefalsetruefalse4truetruetrue0.02500.0250falsefalsefalsetruefalse5truetruetrue0.02800.0280falsefalsefalsetruefalse6truetruetrue0.02740.0274falsefalsefalsetruefalse7truetruetrue0.02260.0226falsefalsefalsetruefalse8truetruetrue0.02200.0220falsefalsefalsetruefalse9truetruetrue0.03130.0313falsefalsefalsetruefalse10truetruetrue0.02740.0274falsefalsefalsetruefalse11truetruetrue0.02580.0258falsefalsefalsetruefalse12truetruetrue0.02500.0250falsefalsefalsetruefalse13falsetruetrue00falsefalsefalsetruefalse14falsetruetrue00falsefalsefalsetruefalse15falsetruetrue00falsefalsefalsetruefalse16falsetruetrue00falsefalsefalsetruefalse17falsetruetrue00falsefalsefalsetruefalse18falsetruetrue00falsefalsefalsetruefalse19falsetruetrue00falsefalsefalsetruefalse20falsetruetrue00falsefalsefalsetruefalse21falsetruetrue00falsefalsefalsetruefalse22falsetruetrue00falsefalsefalsetruefalse23falsetruetrue00falsefalsefalsetruefalse24falsetruetrue00falsefalsefalsetruefalse25falsetruetrue00falsefalsefalsetruefalse26falsetruetrue00falsefalsefalsetruefalse27falsetruetrue00falsefalsefalsetruefalse28falsetruetrue00falsefalsefalsetruefalse29falsetruetrue00falsefalsefalsetruefalse30falsetruetrue00falsefalsefalsetruefalse31falsetruetrue00falsefalsefalsetruefalse32falsetruetrue00falsefalsefalsetruefalse33falsetruetrue00falsefalsefalsetruefalse34falsetruetrue00falsefalsefalsetruefalse35falsetruetrue00falsefalsefalsetruefalse36truetruetrue0.05850.0585falsefalsefalsetruefalse37truetruetrue0.05800.0580falsefalsefalsetruefalse38truetruetrue0.04070.0407falsefalsefalsetruefalse39truetruetrue0.03930.0393falsefalsefalsetruefalse40truetruetrue0.05620.0562falsefalsefalsetruefalse41truetruetrue0.05800.0580falsefalsefalsetruefalse42truetruetrue0.03940.0394falsefalsefalsetruefalse43truetruetrue0.03790.0379falsefalsefalsetruefalse44truetruetrue0.05850.0585falsefalsefalsetruefalse45truetruetrue0.05800.0580falsefalsefalsetruefalse46truetruetrue0.04070.0407falsefalsefalsetruefalse47truetruetrue0.03930.0393falsefalsefalsetruefalse48falsetruetrue00falsefalsefalsetruefalse49falsetruetrue00falsefalsefalsetruefalse50falsetruetrue00falsefalsefalsetruefalse51falsetruetrue00falsefalsefalsetruefalse52falsetruetrue00falsefalsefalsetruefalse53falsetruetrue00falsefalsefalsetruefalse54falsetruetrue00falsefalsefalsetruefalse55falsetruetrue00falsefalsefalsetruefalse56falsetruetrue00falsefalsefalsetruefalse57falsetruetrue00falsefalsefalsetruefalse58falsetruetrue00falsefalsefalsetruefalse59falsetruetrue00falsefalsefalsetruefalse60truetruetrue0.02510.0251falsefalsefalsetruefalse61truetruetrue0.04860.0486falsefalsefalsetruefalse62truetruetrue0.02020.0202falsefalsefalsetruefalse63truetruetrue0.02090.0209falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, 5 YearsfalseUSDfalsefalse$4falseColumnprimaryElement*6false0rr_AverageAnnualReturnYear10rrfalsenadurationNo definition 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Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, 10 YearsfalseUSDfalsefalse$5falseColumnprimaryElement*7false0rr_AverageAnnualReturnSinceInceptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.04840.0484falsefalsefalsetruefalse2truetruetrue0.04560.0456falsefalsefalsetruefalse3truetruetrue0.04290.0429falsefalsefalsetruefalse4truetruetrue0.03980.0398falsefalsefalsetruefalse5truetruetrue0.04490.0449falsefalsefalsetruefalse6truetruetrue0.04560.0456falsefalsefalsetruefalse7truetruetrue0.03900.0390falsefalsefalsetruefalse8truetruetrue0.03620.0362falsefalsefalsetruefalse9truetruetrue0.04840.0484falsefalsefalsetruefalse10truetruetrue0.04560.0456falsefalsefalsetruefalse11truetruetrue0.04290.0429falsefalsefalsetruefalse12truetruetrue0.03980.0398falsefalsefalsetruefalse13truetruetrue-0.0243-0.0243falsefalsefalsetruefalse14truetruetrue0.00410.0041falsefalsefalsetruefalse15truetruetrue0.02580.0258falsefalsefalsetruefalse16truetruetrue-0.0273-0.0273falsefalsefalsetruefalse17truetruetrue-0.0215-0.0215falsefalsefalsetruefalse18truetruetrue-0.0272-0.0272falsefalsefalsetruefalse19truetruetrue0.00410.0041falsefalsefalsetruefalse20truetruetrue0.02580.0258falsefalsefalsetruefalse21truetruetrue-0.0304-0.0304falsefalsefalsetruefalse22truetruetrue-0.0242-0.0242falsefalsefalsetruefalse23truetruetrue-0.0243-0.0243falsefalsefalsetruefalse24truetruetrue0.00410.0041falsefalsefalsetruefalse25truetruetrue0.02580.0258falsefalsefalsetruefalse26truetruetrue-0.0273-0.0273falsefalsefalsetruefalse27truetruetrue-0.0215-0.0215falsefalsefalsetruefalse28truetruetrue0.00780.0078falsefalsefalsetruefalse29truetruetrue-0.0201-0.0201falsefalsefalsetruefalse30truetruetrue0.00470.0047falsefalsefalsetruefalse31truetruetrue0.00540.0054falsefalsefalsetruefalse32truetruetrue0.00780.0078falsefalsefalsetruefalse33truetruetrue-0.0201-0.0201falsefalsefalsetruefalse34truetruetrue0.00470.0047falsefalsefalsetruefalse35truetruetrue0.00540.0054falsefalsefalsetruefalse36truetruetrue0.06860.0686falsefalsefalsetruefalse37truetruetrue0.07350.0735falsefalsefalsetruefalse38truetruetrue0.04530.0453falsefalsefalsetruefalse39truetruetrue0.04490.0449falsefalsefalsetruefalse40truetruetrue0.06430.0643falsefalsefalsetruefalse41truetruetrue0.07350.0735falsefalsefalsetruefalse42truetruetrue0.04150.0415falsefalsefalsetruefalse43truetruetrue0.04130.0413falsefalsefalsetruefalse44truetruetrue0.06860.0686falsefalsefalsetruefalse45falsetruetrue00falsefalsefalsetruefalse46truetruetrue0.04530.0453falsefalsefalsetruefalse47truetruetrue0.04490.0449falsefalsefalsetruefalse48truetruetrue0.07900.0790falsefalsefalsetruefalse49truetruetrue0.06270.0627falsefalsefalsetruefalse50truetruetrue0.05820.0582falsefalsefalsetruefalse51truetruetrue0.05560.0556falsefalsefalsetruefalse52truetruetrue0.07900.0790falsefalsefalsetruefalse53truetruetrue0.06270.0627falsefalsefalsetruefalse54truetruetrue0.05820.0582falsefalsefalsetruefalse55truetruetrue0.05560.0556falsefalsefalsetruefalse56truetruetrue0.07900.0790falsefalsefalsetruefalse57truetruetrue0.06270.0627falsefalsefalsetruefalse58truetruetrue0.05820.0582falsefalsefalsetruefalse59truetruetrue0.05560.0556falsefalsefalsetruefalse60truetruetrue0.04830.0483falsefalsefalsetruefalse61truetruetrue0.06760.0676falsefalsefalsetruefalse62truetruetrue0.04370.0437falsefalsefalsetruefalse63truetruetrue0.04140.0414falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, Since InceptionfalseUSDfalsefalse$6falseColumnprimaryElement*8false0rr_AverageAnnualReturnInceptionDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse002004-10-28[7]falsefalsetruetruefalse2falsetruefalse002004-10-31falsefalsetruetruefalse3falsetruefalse002004-10-28[7]falsefalsetruetruefalse4falsetruefalse002004-10-28[7]falsefalsetruetruefalse5falsetruefalse002004-10-28[7]falsefalsetruetruefalse6falsetruefalse002004-10-31falsefalsetruetruefalse7falsetruefalse002004-10-28[7]falsefalsetruetruefalse8falsetruefalse002004-10-28[7]falsefalsetruetruefalse9falsetruefalse002004-10-28[7]falsefalsetruetruefalse10falsetruefalse002004-10-31falsefalsetruetruefalse11falsetruefalse002004-10-28[7]falsefalsetruetruefalse12falsetruefalse002004-10-28[7]falsefalsetruetruefalse13falsetruefalse002006-07-27[2]falsefalsetruetruefalse14falsetruefalse002006-07-31falsefalsetruetruefalse15falsetruefalse002006-07-31falsefalsetruetruefalse16falsetruefalse002006-07-27[2]falsefalsetruetruefalse17falsetruefalse002006-07-27[2]falsefalsetruetruefalse18falsetruefalse002006-07-27[2]falsefalsetruetruefalse19falsetruefalse002006-07-31falsefalsetruetruefalse20falsetruefalse002006-07-31falsefalsetruetruefalse21falsetruefalse002006-07-27[2]falsefalsetruetruefalse22falsetruefalse002006-07-27[2]falsefalsetruetruefalse23falsetruefalse002006-07-27[2]falsefalsetruetruefalse24falsetruefalse002006-07-31falsefalsetruetruefalse25falsetruefalse002006-07-31falsefalsetruetruefalse26falsetruefalse002006-07-27[2]falsefalsetruetruefalse27falsetruefalse002006-07-27[2]falsefalsetruetruefalse28falsetruefalse002007-12-20[1]falsefalsetruetruefalse29falsetruefalse002007-12-31falsefalsetruetruefalse30falsetruefalse002007-12-20[1]falsefalsetruetruefalse31falsetruefalse002007-12-20[1]falsefalsetruetruefalse32falsetruefalse002007-12-20[1]falsefalsetruetruefalse33falsetruefalse002007-12-31falsefalsetruetruefalse34falsetruefalse002007-12-20[1]falsefalsetruetruefalse35falsetruefalse002007-12-20[1]falsefalsetruetruefalse36falsetruefalse001987-05-01[4]falsefalsetruetruefalse37falsetruefalse001987-05-31falsefalsetruetruefalse38falsetruefalse001987-05-01[4]falsefalsetruetruefalse39falsetruefalse001987-05-01[4]falsefalsetruetruefalse40falsetruefalse001987-05-01[4]falsefalsetruetruefalse41falsetruefalse001987-05-31falsefalsetruetruefalse42falsetruefalse001987-05-01[4]falsefalsetruetruefalse43falsetruefalse001987-05-01[4]falsefalsetruetruefalse44falsetruefalse001987-05-01[5]falsefalsetruetruefalse45falsetruefalse00falsefalsetruetruefalse46falsetruefalse001987-05-01[5]falsefalsetruetruefalse47falsetruefalse001987-05-01[5]falsefalsetruetruefalse48falsetruefalse002009-07-02[3]falsefalsetruetruefalse49falsetruefalse002009-07-31falsefalsetruetruefalse50falsetruefalse002009-07-02[3]falsefalsetruetruefalse51falsetruefalse002009-07-02[3]falsefalsetruetruefalse52falsetruefalse002009-07-02[3]falsefalsetruetruefalse53falsetruefalse002009-07-31falsefalsetruetruefalse54falsetruefalse002009-07-02[3]falsefalsetruetruefalse55falsetruefalse002009-07-02[3]falsefalsetruetruefalse56falsetruefalse002009-07-02[3]falsefalsetruetruefalse57falsetruefalse002009-07-31falsefalsetruetruefalse58falsetruefalse002009-07-02[3]falsefalsetruetruefalse59falsetruefalse002009-07-02[3]falsefalsetruetruefalse60falsetruefalse002000-10-31[6]falsefalsetruetruefalse61falsetruefalse002000-10-31falsefalsetruetruefalse62falsetruefalse002000-10-31[6]falsefalsetruetruefalse63falsetruefalse002000-10-31[6]falsefalsetruetruefalseOtherxbrli:dateItemTypedateReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 4 -Subsection b falsefalseAverage Annual Returns, Inception DatefalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006667MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000018187MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT CORE FIXED INCOME FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006667Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT CORE FIXED INCOME FUND - CLASS Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000018187Memberrr_ProspectusShareClassAxisexplicitMembertruefalseBefore Taxesrr_PerformanceMeasureAxisrr_PerformanceMeasureDomainrr_PerformanceMeasureAxisexplicitMemberSIMT CORE FIXED INCOME FUNDSIMT CORE FIXED INCOME FUND - CLASS ABefore 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Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000018187Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseBarclays Capital U.S. Aggregate Bond Indexrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_RRINDEX00001Memberrr_PerformanceMeasureAxisexplicitMemberSIMT CORE FIXED INCOME FUNDSIMT CORE FIXED INCOME FUND - CLASS ABarclays Capital U.S. Aggregate Bond IndexStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or 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Distributionsrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsMemberrr_PerformanceMeasureAxisexplicitMemberSIMT CORE FIXED INCOME FUNDSIMT CORE FIXED INCOME FUND - CLASS AAfter Taxes on DistributionsStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class A Return After Taxes on DistributionsClass A Return After Taxes on Distributionsfalsefalsefalsetruefalse2truetruetrue0.09500.0950falsefalsefalsetruefalse3truetruetrue0.04070.0407falsefalsefalsetruefalse4truetruetrue0.03830.0383falsefalsefalsetruefalse5truetruetrue0.04530.0453falsefalsefalsetruefalse6falsetruefalse001987-05-011987-05-01[1]falsefalsetruetruefalseOthernanafalsefalseSIMT CORE FIXED INCOME FUND - CLASS A After Taxes on 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Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return, Heading265false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment GoalfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment Objective, Heading266false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Current income consistent with the preservation of capital.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseinvestment Objective, Primary267false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and ExpensesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpense, Heading268false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This table describes the fees and expenses that you may pay if you buy and hold Fund shares.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseExpense, Narrative269false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00SHAREHOLDER FEES (fees paid directly from your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees, Caption270false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018186Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018186Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/ShareholderFeesDatafalsefalse020010 - Schedule - Shareholder Feestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006667MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000018186MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT CORE FIXED INCOME FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006667Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT CORE FIXED INCOME FUND - CLASS Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000018186Memberrr_ProspectusShareClassAxisexplicitMemberSIMT CORE FIXED INCOME FUNDSIMT CORE FIXED INCOME FUND - CLASS Iiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_RedemptionFeeOverRedemptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truetruetrue0.00500.0050[2]falsefalsefalsetruefalse2truetruetrue0.00500.0050[2]falsefalsefalsetruefalse3truetruetrue0.00500.0050[1]falsefalsefalsetruefalse4truetruetrue0.00750.0075[2]falsefalsefalsetruefalse5truetruetrue0.00750.0075[2]falsefalsefalsetruefalse6truetruetrue0.00750.0075[2]falsefalsefalsetruefalse7truetruetrue0.00500.0050[2]falsefalsefalsetruefalse8truetruetrue0.00500.0050[2]falsefalsefalsetruefalse9truetruetrue0.00600.0060[3]falsefalsefalsetruefalse10truetruetrue0.00600.0060[4]falsefalsefalsetruefalse11truetruetrue0.00600.0060[3]falsefalsefalsetruefalse12truetruetrue0.00600.0060[3]falsefalsefalsetruefalse13truetruetrue0.00600.0060[4]falsefalsefalsetruefalse14truetruetrue0.00600.0060[3]falsefalsefalsetruefalse15truetruetrue0.00250.0025[2]falsefalsefalsetruefalse16truetruetrue0.01000.0100[2]falsefalsefalsetruefalseOtherrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph b -Subsection instructions falsefalseRedemption fee0rr_RedemptionFeeOverRedemptiontruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue0.00600.0060falsefalsefalsetruefalseOthernanafalsefalseRedemption fee1applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $50 million within any thirty (30) day period)11Shareholder Fees UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006667MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000018186MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No authoritative reference available.falsefalseShareholder Fees [Table]271false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses, Caption272false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018186Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018186Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/OperatingExpensesDatafalsefalse020020 - Schedule - Annual Fund Operating Expensestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006667MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000018186MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT CORE FIXED INCOME FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006667Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT CORE FIXED INCOME FUND - CLASS Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000018186Memberrr_ProspectusShareClassAxisexplicitMemberSIMT CORE FIXED INCOME FUNDSIMT CORE FIXED INCOME FUND - CLASS Iiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00650.0065falsefalsefalsetruefalse2truetruetrue0.00650.0065falsefalsefalsetruefalse3truetruetrue0.00650.0065falsefalsefalsetruefalse4truetruetrue0.00650.0065falsefalsefalsetruefalse5truetruetrue0.00650.0065falsefalsefalsetruefalse6truetruetrue0.00650.0065falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00280.0028falsefalsefalsetruefalse10truetruetrue0.00280.0028falsefalsefalsetruefalse11truetruetrue0.00280.0028falsefalsefalsetruefalse12truetruetrue0.00280.0028falsefalsefalsetruefalse13truetruetrue0.00280.0028falsefalsefalsetruefalse14truetruetrue0.00280.0028falsefalsefalsetruefalse15truetruetrue0.01500.0150falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement Fees0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00280.0028falsefalsefalsetruefalseOthernanafalsefalseManagement Fees2falseRowprimaryElement*4false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.000.00falsefalsefalsetruefalse2truetruetrue0.000.00falsefalsefalsetruefalse3truetruetrue0.00250.0025falsefalsefalsetruefalse4truetruetrue0.000.00falsefalsefalsetruefalse5truetruetrue0.000.00falsefalsefalsetruefalse6truetruetrue0.00250.0025falsefalsefalsetruefalse7truetruetrue0.000.00falsefalsefalsetruefalse8truetruetrue0.00250.0025falsefalsefalsetruefalse9truetruetrue0.000.00falsefalsefalsetruefalse10truetruetrue0.000.00falsefalsefalsetruefalse11truetruetrue0.00250.0025falsefalsefalsetruefalse12truetruetrue0.000.00falsefalsefalsetruefalse13truetruetrue0.000.00falsefalsefalsetruefalse14truetruetrue0.00250.0025falsefalsefalsetruefalse15truetruetrue0.000.00falsefalsefalsetruefalse16truetruetrue0.00250.0025falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution (12b-1) Fees0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.000.00falsefalsefalsetruefalseOthernanafalsefalseDistribution (12b-1) Fees3falseRowprimaryElement*5false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00640.0064falsefalsefalsetruefalse2truetruetrue0.00890.0089falsefalsefalsetruefalse3truetruetrue0.00640.0064falsefalsefalsetruefalse4truetruetrue0.00670.0067falsefalsefalsetruefalse5truetruetrue0.00920.0092falsefalsefalsetruefalse6truetruetrue0.00670.0067falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00580.0058falsefalsefalsetruefalse10truetruetrue0.00830.0083falsefalsefalsetruefalse11truetruetrue0.00580.0058falsefalsefalsetruefalse12truetruetrue0.00590.0059falsefalsefalsetruefalse13truetruetrue0.00840.0084falsefalsefalsetruefalse14truetruetrue0.00590.0059falsefalsefalsetruefalse15truetruetrue0.00690.0069[2]falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther Expenses0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00830.0083falsefalsefalsetruefalseOthernanafalsefalseOther Expenses4falseRowprimaryElement*7false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01290.0129falsefalsefalsetruefalse2truetruetrue0.01540.0154falsefalsefalsetruefalse3truetruetrue0.01540.0154falsefalsefalsetruefalse4truetruetrue0.01320.0132falsefalsefalsetruefalse5truetruetrue0.01570.0157falsefalsefalsetruefalse6truetruetrue0.01570.0157falsefalsefalsetruefalse7truetruetrue0.01300.0130falsefalsefalsetruefalse8truetruetrue0.01550.0155falsefalsefalsetruefalse9truetruetrue0.00860.0086falsefalsefalsetruefalse10truetruetrue0.01110.0111falsefalsefalsetruefalse11truetruetrue0.01110.0111falsefalsefalsetruefalse12truetruetrue0.00870.0087falsefalsefalsetruefalse13truetruetrue0.01120.0112falsefalsefalsetruefalse14truetruetrue0.01120.0112falsefalsefalsetruefalse15truetruetrue0.02930.0293falsefalsefalsetruefalse16truetruetrue0.01550.0155falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph d -Subsection instructions falsefalseTotal Annual Fund Operating Expenses0rr_ExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01110.0111falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses14Annual Fund Operating Expenses UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006667MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000018186MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Table]273false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00EXAMPLEfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, Heading274false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and that you sell your shares at the end of each period. The Example also assumes that each year your investment has a 5% return, Fund operating expenses remain the same, and you reinvest all dividends and distributions.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative275false0rr_ExpenseExampleByYearCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Although your actual costs and returns might be different, your approximate costs of investing $10,000 in the Fund would be:falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, By Year, Caption276false0rr_ExpenseExampleWithRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018186Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018186Member row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/ExpenseExamplefalsefalse020030 - Schedule - Expense Example {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue131131falsefalsefalsetruefalse2truefalsetrue157157falsefalsefalsetruefalse3truefalsetrue157157falsefalsefalsetruefalse4truefalsetrue134134falsefalsefalsetruefalse5truefalsetrue160160falsefalsefalsetruefalse6truefalsetrue160160falsefalsefalsetruefalse7truefalsetrue132132falsefalsefalsetruefalse8truefalsetrue158158falsefalsefalsetruefalse9truefalsetrue8888falsefalsefalsetruefalse10truefalsetrue113113falsefalsefalsetruefalse11truefalsetrue113113falsefalsefalsetruefalse12truefalsetrue8989falsefalsefalsetruefalse13truefalsetrue114114falsefalsefalsetruefalse14truefalsetrue114114falsefalsefalsetruefalse15truefalsetrue296296falsefalsefalsetruefalse16truefalsetrue158158falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, With Redemption, 1 YearfalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.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:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 3 YearsfalseUSDfalsefalse$3falseColumnprimaryElement*5false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue708708falsefalsefalsetruefalse2truefalsetrue839839falsefalsefalsetruefalse3truefalsetrue839839falsefalsefalsetruefalse4truefalsetrue723723falsefalsefalsetruefalse5truefalsetrue855855falsefalsefalsetruefalse6truefalsetrue855855falsefalsefalsetruefalse7truefalsetrue713713falsefalsefalsetruefalse8truefalsetrue845845falsefalsefalsetruefalse9truefalsetrue477477falsefalsefalsetruefalse10truefalsetrue612612falsefalsefalsetruefalse11truefalsetrue612612falsefalsefalsetruefalse12truefalsetrue482482falsefalsefalsetruefalse13truefalsetrue617617falsefalsefalsetruefalse14truefalsetrue617617falsefalsefalsetruefalse15falsefalsetrue00falsefalsefalsetruefalse16truefalsetrue845845falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 5 YearsfalseUSDfalsefalse$4falseColumnprimaryElement*6false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.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:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 10 YearsfalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006667MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000018186MemberRowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT CORE FIXED INCOME FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006667Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT CORE FIXED INCOME FUND - CLASS Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000018186Memberrr_ProspectusShareClassAxisexplicitMemberSIMT CORE FIXED INCOME FUNDSIMT CORE FIXED INCOME FUND - CLASS Iiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue113113falsefalsefalsetruefalse2truefalsetrue353353falsefalsefalsetruefalse3truefalsetrue612612falsefalsefalsetruefalse4truefalsetrue13521352falsefalsefalsetruefalseOthernanafalsefalseSIMT CORE FIXED INCOME FUND SIMT CORE FIXED INCOME FUND - CLASS I41Expense Example (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006667MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000018186MemberRowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExample.No authoritative reference available.falsefalseExpense Example, With Redemption [Table]277false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00PORTFOLIO TURNOVERfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover, Heading278false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 283% of the average value of its portfolio.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover279false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Investment StrategiesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Heading280false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Under normal circumstances, the Core Fixed Income Fund will invest at least 80% of its net assets in fixed income securities. The Fund will invest primarily in investment and non-investment grade U.S. and foreign corporate and government fixed income securities, including emerging market, asset-backed securities and mortgage-backed securities. The Fund may invest in securities denominated in either U.S. dollars or foreign currency. The Fund uses a multi-manager approach, relying upon a number of sub-advisers with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation (SIMC), the Fund's adviser. Sub-advisers are selected for their expertise in managing various kinds of fixed income securities, and each sub-adviser makes investment decisions based on an analysis of yield trends, credit ratings, and other factors in accordance with its particular discipline. The Fund may also invest in futures contracts, forward contracts and swaps for speculative or hedging purposes. Futures, forwards and swaps are used to synthetically obtain exposure to securities or baskets of securities and to manage the Fund's interest rate duration and yield curve exposure. These derivatives are also used to mitigate the Fund's overall level of risk and/or the Fund's risk to particular types of securities, currencies or market segments. Interest rate swaps are further used to manage the Fund's yield spread sensitivity. When the Fund seeks to take an active long or short position with respect to the likelihood of an event of default of a security or basket of securities, the Fund may use credit default swaps. The Fund may buy credit default swaps in an attempt to manage credit risk where the Fund has credit exposure to an issuer and the Fund may sell credit default swaps to more efficiently gain credit exposure to such security or basket of securities. The sub-advisers may also engage in currency transactions using futures and foreign currency forward contracts either to seek to hedge the Fund's currency exposure or to enhance the Fund's returns. The Fund may take long and short positions in foreign currencies in excess of the value of the Fund's assets denominated in a particular currency or when the Fund does not own assets denominated in that currency. The Fund will invest primarily in investment grade securities (those rated AAA, AA, A and BBB-). However, the Fund may invest in non-rated securities or securities rated below investment grade (BB+, B and CCC). The Fund also invests a portion of its assets in bank loans, which are, generally, non-investment grade (junk bond) floating rate instruments. The Fund may invest in bank loans in the form of participations in the loans (participations) and assignments of all or a portion of the loans from third parties (assignments). While each sub-adviser chooses securities of different types and maturities, the Fund in the aggregate generally will have a dollar-weighted average duration that is consistent with that of the broad U.S. fixed income market as represented by the Barclays Capital U.S. Aggregate Bond Index. The dollar-weighted average duration of the Barclays Capital U.S. Aggregate Bond Index varies significantly over time, but as of December 31, 2010 it was 4.98 years. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security's price to changes in interest rates.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Narrative281false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal RisksfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk, Heading282false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Asset-backed Securities Risk - Payment of principal and interest on asset-backed securities is dependent largely on the cash flows generated by the assets backing the securities and asset-backed securities may not have the benefit of any security interest in the related assets. Bank Loans Risk - With respect to bank loans, the Fund will assume the credit risk of both the borrower and the lender that is selling the participation. The Fund may also have difficulty disposing of bank loans because, in certain cases, the market for such instruments is not highly liquid. Below Investment Grade Securities Risk - Fixed income securities rated below investment grade (junk bonds) involve greater risks of default or downgrade and are more volatile than investment grade securities. Corporate Fixed Income Securities Risk - Corporate fixed income securities respond to economic developments, especially changes in interest rates, as well as perceptions of the creditworthiness and business prospects of individual issuers. Credit Risk - The risk that the issuer of a security, or the counterparty to a contract, will default or otherwise become unable to honor a financial obligation. Currency Risk - Due to the Fund's active positions in currencies, it will be subject to the risk that currency exchange rates may fluctuate in response to, among other things, changes in interest rates, intervention (or failure to intervene) by U.S. or foreign governments, central banks or supranational entities, or by the imposition of currency controls or other political developments in the United States or abroad. Derivatives Risk - The Fund's use of futures, forwards and swaps is subject to market risk, leverage risk, correlation risk and liquidity risk. Leverage risk and liquidity risk are described below. Market risk is the risk that the market value of an investment may move up and down, sometimes rapidly and unpredictably. Correlation risk is the risk that changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index. The Fund's use of forwards and swap agreements is also subject to credit risk and valuation risk. Valuation risk is the risk that the derivative may be difficult to value and/or valued incorrectly. Credit risk is described above. Each of these risks could cause the Fund to lose more than the principal amount invested in a derivative instrument. Exchange-Traded Funds (ETFs) Risk - The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio securities. Fixed Income Market Risk - The prices of the Fund's fixed income securities respond to economic developments, particularly interest rate changes, as well as to perceptions about the creditworthiness of individual issuers, including governments and their agencies. In the case of foreign securities, price fluctuations will reflect international economic and political events, as well as changes in currency valuations relative to the U.S. dollar. Foreign Investment/Emerging Markets Risk - The risk that non-U.S. securities may be subject to additional risks due to, among other things, political, social and economic developments abroad, currency movements, and different legal, regulatory and tax environments. These additional risks may be heightened with respect to emerging market countries since political turmoil and rapid changes in economic conditions are more likely to occur in these countries. Interest Rate Risk - The risk that the value of fixed income securities, including U.S. Government securities, will fall due to rising interest rates. Investment Style Risk - The risk that U.S. fixed income securities may underperform other segments of the fixed income markets or the fixed income markets as a whole. Leverage Risk - The use of leverage can amplify the effects of market volatility on the Fund's share price and may also cause the Fund to liquidate portfolio positions when it would not be advantageous to do so in order to satisfy its obligations. Liquidity Risk - The risk that certain securities may be difficult or impossible to sell at the time and the price that the Fund would like. The Fund may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance. Mortgage-backed Securities Risk - Mortgage-backed securities are affected by, among other things, interest rate changes and the possibility of prepayment of the underlying mortgage loans. Mortgage-backed securities are also subject to the risk that underlying borrowers will be unable to meet their obligations. Portfolio Turnover Risk - Due to its investment strategy, the Fund may buy and sell securities frequently. This may result in higher transaction costs and additional capital gains tax liabilities. U.S. Government Securities Risk - Although U.S. Government securities are considered to be among the safest investments, they are not guaranteed against price movements due to changing interest rates. Obligations issued by some U.S. Government agencies are backed by the U.S. Treasury, while others are backed solely by the ability of the agency to borrow from the U.S. Treasury or by the agency's own resources. Loss of money is a risk of investing in the Fund.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk, Narrative283false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Performance InformationfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table, Heading284false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years, and since the Fund's inception, compared with those of a broad measure of market performance. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI. The Fund's Class I Shares commenced operations on August 6, 2001. Therefore, performance and average annual total returns for the periods prior to August 6, 2001 are calculated using the performance and average annual total returns of the Fund's Class A Shares, adjusted for the higher expenses of the Class I Shares.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance, Narrative285false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018186Member row primary compact * ~</div>falsefalseBarChart10.jpg<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018186Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/BarChartDatafalsefalse020050 - Schedule - Annual Total Returnstruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006667MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000018186MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT CORE FIXED INCOME FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006667Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT CORE FIXED INCOME FUND - CLASS Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000018186Memberrr_ProspectusShareClassAxisexplicitMemberSIMT CORE FIXED INCOME FUNDSIMT CORE FIXED INCOME FUND - CLASS Iiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_AnnualReturn2001rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00falsefalsefalsetruefalse2falsetruefalse00falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.06950.0695falsefalsefalsetruefalse10truetruefalse0.06560.0656falsefalsefalsetruefalse11truetruefalse0.06950.0695falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse-0.0296-0.0296falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20010rr_AnnualReturn2001truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.06560.0656falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20012falseRowprimaryElement*4false0rr_AnnualReturn2002rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00falsefalsefalsetruefalse2falsetruefalse00falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.09100.0910falsefalsefalsetruefalse10truetruefalse0.08830.0883falsefalsefalsetruefalse11truetruefalse0.09100.0910falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse-0.1912-0.1912falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20020rr_AnnualReturn2002truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.08830.0883falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20023falseRowprimaryElement*5false0rr_AnnualReturn2003rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00falsefalsefalsetruefalse2falsetruefalse00falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.05320.0532falsefalsefalsetruefalse10truetruefalse0.05060.0506falsefalsefalsetruefalse11truetruefalse0.05320.0532falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.4870.487falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20030rr_AnnualReturn2003truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05060.0506falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20034falseRowprimaryElement*6false0rr_AnnualReturn2004rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00falsefalsefalsetruefalse2falsetruefalse00falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.04660.0466falsefalsefalsetruefalse10truetruefalse0.04410.0441falsefalsefalsetruefalse11truetruefalse0.04660.0466falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.16620.1662falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20040rr_AnnualReturn2004truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.04410.0441falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20045falseRowprimaryElement*7false0rr_AnnualReturn2005rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05780.0578falsefalsefalsetruefalse2truetruefalse0.05380.0538falsefalsefalsetruefalse3truetruefalse0.05780.0578falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.02180.0218falsefalsefalsetruefalse10truetruefalse0.01830.0183falsefalsefalsetruefalse11truetruefalse0.02180.0218falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.06840.0684falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20050rr_AnnualReturn2005truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.01830.0183falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20056falseRowprimaryElement*8false0rr_AnnualReturn2006rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.13750.1375falsefalsefalsetruefalse2truetruefalse0.13320.1332falsefalsefalsetruefalse3truetruefalse0.13750.1375falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.04550.0455falsefalsefalsetruefalse10truetruefalse0.04390.0439falsefalsefalsetruefalse11truetruefalse0.04550.0455falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.12340.1234falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20060rr_AnnualReturn2006truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.04390.0439falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20067falseRowprimaryElement*9false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.08270.0827falsefalsefalsetruefalse2truetruefalse0.0790.079falsefalsefalsetruefalse3truetruefalse0.08270.0827falsefalsefalsetruefalse4truetruefalse0.00030.0003falsefalsefalsetruefalse5truetruefalse-0.0039-0.0039falsefalsefalsetruefalse6truetruefalse0.00030.0003falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.04040.0404falsefalsefalsetruefalse10truetruefalse0.03780.0378falsefalsefalsetruefalse11truetruefalse0.04040.0404falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.01650.0165falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20070rr_AnnualReturn2007truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.03780.0378falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20078falseRowprimaryElement*10false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2908-0.2908falsefalsefalsetruefalse2truetruefalse-0.2929-0.2929falsefalsefalsetruefalse3truetruefalse-0.2908-0.2908falsefalsefalsetruefalse4truetruefalse-0.2713-0.2713falsefalsefalsetruefalse5truetruefalse-0.2738-0.2738falsefalsefalsetruefalse6truetruefalse-0.2713-0.2713falsefalsefalsetruefalse7truetruefalse-0.2453-0.2453falsefalsefalsetruefalse8truetruefalse-0.2453-0.2453falsefalsefalsetruefalse9truetruefalse-0.0713-0.0713falsefalsefalsetruefalse10truetruefalse-0.0735-0.0735falsefalsefalsetruefalse11truetruefalse-0.0713-0.0713falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse-0.4116-0.4116falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20080rr_AnnualReturn2008truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.0735-0.0735falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20089falseRowprimaryElement*11false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.16240.1624falsefalsefalsetruefalse2truetruefalse0.15850.1585falsefalsefalsetruefalse3truetruefalse0.16240.1624falsefalsefalsetruefalse4truetruefalse0.03890.0389falsefalsefalsetruefalse5truetruefalse0.03560.0356falsefalsefalsetruefalse6truetruefalse0.03890.0389falsefalsefalsetruefalse7truetruefalse0.18250.1825falsefalsefalsetruefalse8truetruefalse0.18250.1825falsefalsefalsetruefalse9truetruefalse0.18480.1848falsefalsefalsetruefalse10truetruefalse0.18110.1811falsefalsefalsetruefalse11truetruefalse0.18480.1848falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.35780.3578falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20090rr_AnnualReturn2009truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.18110.1811falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 200910falseRowprimaryElement*12false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14880.1488falsefalsefalsetruefalse2truetruefalse0.14630.1463falsefalsefalsetruefalse3truetruefalse0.14880.1488falsefalsefalsetruefalse4truetruefalse0.07170.0717falsefalsefalsetruefalse5truetruefalse0.0710.071falsefalsefalsetruefalse6truetruefalse0.07170.0717falsefalsefalsetruefalse7truetruefalse0.15210.1521falsefalsefalsetruefalse8truetruefalse0.15210.1521falsefalsefalsetruefalse9truetruefalse0.11010.1101falsefalsefalsetruefalse10truetruefalse0.10880.1088falsefalsefalsetruefalse11truetruefalse0.11010.1101falsefalsefalsetruefalse12truetruefalse0.07520.0752falsefalsefalsetruefalse13truetruefalse0.07520.0752falsefalsefalsetruefalse14truetruefalse0.07520.0752falsefalsefalsetruefalse15truetruefalse0.24070.2407falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20100rr_AnnualReturn2010truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.10880.1088falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 2010110Annual Total Returns UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006667MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000018186MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to BarChartData.No authoritative reference available.falsefalseBar Chart [Table]286false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Best Quarter: 7.96% (09/30/09) Worst Quarter: -3.39% (09/30/08)</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart, Closing287false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalsePerformance Table, Heading288false0rr_PerformanceTableNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This table compares the Fund's average annual total returns for Class I Shares to those of the Barclays Capital U.S. Aggregate Bond Index. The Barclays Capital U.S. Aggregate Bond Index is a widely-recognized, market-weighted (higher market value bonds have more influence than lower market value bonds) index of U.S. Government obligations, corporate debt securities and AAA rated mortgage-backed securities. All securities in the index are rated investment grade (BBB-) or higher, with maturities of at least 1 year. However, as noted above, the Fund's Class I Shares commenced operations on August 6, 2001. Therefore, the Fund's average annual total returns for the periods prior to that time are based on the average annual total returns of the Class A Shares, adjusted for the higher expenses of the Class I Shares. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also shouldshow the returns of an appropriate broadbased securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____). For a Fund that provides annual total returns for only one calendar year or for a Fund that does not include the bar chart because it does not have annual returns for a full calendar year, modify, as appropriate, the narrative explanation required by paragraph (c)(2)(i) (e.g., by stating that the information gives some indication of the risks of an investment in the Fund by comparing the Fund's performance with a broad measure of market performance).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iv -Subsection b falsefalsePerformance Table, Narrative289false0rr_AverageAnnualReturnCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 5 -Subsection b falsefalseAverage Annual Returns, Caption290false0rr_PerformanceTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018186Member column rr_PerformanceMeasureAxis compact * row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000018186Member column rr_PerformanceMeasureAxis compact * row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/PerformanceTableDatafalsefalse020060 - Schedule - Average Annual Total Returns {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_AverageAnnualReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse2falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse3falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse4falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse5falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse6falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse7falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse8falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse9falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse10falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse11falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse12falsetruefalse00Class A Return After Taxes on Distribution and Sale of Fund Sharesfalsefalsefalsetruefalse13falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse14falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse15falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse16falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse17falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse18falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse19falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse20falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse21falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse22falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse23falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse24falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse25falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse26falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse27falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse28falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse29falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse30falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse31falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse32falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse33falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse34falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse35falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse36falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse37falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse38falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse39falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse40falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse41falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse42falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse43falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse44falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse45falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse46falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse47falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse48falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse49falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse50falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse51falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse52falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse53falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse54falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse55falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse56falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse57falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse58falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse59falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse60falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse61falsetruefalse00Russell 2500 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse62falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse63falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund SharesfalsefalsefalsetruefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, LabelfalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.14880.1488falsefalsefalsetruefalse2truetruetrue0.16930.1693falsefalsefalsetruefalse3truetruetrue0.14350.1435falsefalsefalsetruefalse4truetruetrue0.09650.0965falsefalsefalsetruefalse5truetruetrue0.14630.1463falsefalsefalsetruefalse6truetruetrue0.16930.1693falsefalsefalsetruefalse7truetruetrue0.14190.1419falsefalsefalsetruefalse8truetruetrue0.09490.0949falsefalsefalsetruefalse9truetruetrue0.14880.1488falsefalsefalsetruefalse10truetruetrue0.16930.1693falsefalsefalsetruefalse11truetruetrue0.14350.1435falsefalsefalsetruefalse12truetruetrue0.09650.0965falsefalsefalsetruefalse13truetruetrue0.07170.0717falsefalsefalsetruefalse14truetruetrue0.10460.1046falsefalsefalsetruefalse15truetruetrue0.12030.1203falsefalsefalsetruefalse16truetruetrue0.07170.0717falsefalsefalsetruefalse17truetruetrue0.04660.0466falsefalsefalsetruefalse18truetruetrue0.07100.0710falsefalsefalsetruefalse19truetruetrue0.10460.1046falsefalsefalsetruefalse20truetruetrue0.12030.1203falsefalsefalsetruefalse21truetruetrue0.07100.0710falsefalsefalsetruefalse22truetruetrue0.04610.0461falsefalsefalsetruefalse23truetruetrue0.07170.0717falsefalsefalsetruefalse24truetruetrue0.10460.1046falsefalsefalsetruefalse25truetruetrue0.12030.1203falsefalsefalsetruefalse26truetruetrue0.07170.0717falsefalsefalsetruefalse27truetruetrue0.04660.0466falsefalsefalsetruefalse28truetruetrue0.15210.1521falsefalsefalsetruefalse29truetruetrue0.16930.1693falsefalsefalsetruefalse30truetruetrue0.14670.1467falsefalsefalsetruefalse31truetruetrue0.09860.0986falsefalsefalsetruefalse32truetruetrue0.15210.1521falsefalsefalsetruefalse33truetruetrue0.16930.1693falsefalsefalsetruefalse34truetruetrue0.14670.1467falsefalsefalsetruefalse35truetruetrue0.09860.0986falsefalsefalsetruefalse36truetruetrue0.11010.1101falsefalsefalsetruefalse37truetruetrue0.06540.0654falsefalsefalsetruefalse38truetruetrue0.09500.0950falsefalsefalsetruefalse39truetruetrue0.07130.0713falsefalsefalsetruefalse40truetruetrue0.10880.1088falsefalsefalsetruefalse41truetruetrue0.06540.0654falsefalsefalsetruefalse42truetruetrue0.09450.0945falsefalsefalsetruefalse43truetruetrue0.07050.0705falsefalsefalsetruefalse44truetruetrue0.11010.1101falsefalsefalsetruefalse45truetruetrue0.06540.0654falsefalsefalsetruefalse46truetruetrue0.09500.0950falsefalsefalsetruefalse47truetruetrue0.07130.0713falsefalsefalsetruefalse48truetruetrue0.07520.0752falsefalsefalsetruefalse49truetruetrue0.06540.0654falsefalsefalsetruefalse50truetruetrue0.05190.0519falsefalsefalsetruefalse51truetruetrue0.04970.0497falsefalsefalsetruefalse52truetruetrue0.07520.0752falsefalsefalsetruefalse53truetruetrue0.06540.0654falsefalsefalsetruefalse54truetruetrue0.05190.0519falsefalsefalsetruefalse55truetruetrue0.04970.0497falsefalsefalsetruefalse56truetruetrue0.07520.0752falsefalsefalsetruefalse57truetruetrue0.06540.0654falsefalsefalsetruefalse58truetruetrue0.05190.0519falsefalsefalsetruefalse59truetruetrue0.04970.0497falsefalsefalsetruefalse60truetruetrue0.24070.2407falsefalsefalsetruefalse61truetruetrue0.26710.2671falsefalsefalsetruefalse62truetruetrue0.23950.2395falsefalsefalsetruefalse63truetruetrue0.15640.1564falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, 1 YearfalseUSDfalsefalse$3falseColumnprimaryElement*5false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.03130.0313falsefalsefalsetruefalse2truetruetrue0.02740.0274falsefalsefalsetruefalse3truetruetrue0.02580.0258falsefalsefalsetruefalse4truetruetrue0.02500.0250falsefalsefalsetruefalse5truetruetrue0.02800.0280falsefalsefalsetruefalse6truetruetrue0.02740.0274falsefalsefalsetruefalse7truetruetrue0.02260.0226falsefalsefalsetruefalse8truetruetrue0.02200.0220falsefalsefalsetruefalse9truetruetrue0.03130.0313falsefalsefalsetruefalse10truetruetrue0.02740.0274falsefalsefalsetruefalse11truetruetrue0.02580.0258falsefalsefalsetruefalse12truetruetrue0.02500.0250falsefalsefalsetruefalse13falsetruetrue00falsefalsefalsetruefalse14falsetruetrue00falsefalsefalsetruefalse15falsetruetrue00falsefalsefalsetruefalse16falsetruetrue00falsefalsefalsetruefalse17falsetruetrue00falsefalsefalsetruefalse18falsetruetrue00falsefalsefalsetruefalse19falsetruetrue00falsefalsefalsetruefalse20falsetruetrue00falsefalsefalsetruefalse21falsetruetrue00falsefalsefalsetruefalse22falsetruetrue00falsefalsefalsetruefalse23falsetruetrue00falsefalsefalsetruefalse24falsetruetrue00falsefalsefalsetruefalse25falsetruetrue00falsefalsefalsetruefalse26falsetruetrue00falsefalsefalsetruefalse27falsetruetrue00falsefalsefalsetruefalse28falsetruetrue00falsefalsefalsetruefalse29falsetruetrue00falsefalsefalsetruefalse30falsetruetrue00falsefalsefalsetruefalse31falsetruetrue00falsefalsefalsetruefalse32falsetruetrue00falsefalsefalsetruefalse33falsetruetrue00falsefalsefalsetruefalse34falsetruetrue00falsefalsefalsetruefalse35falsetruetrue00falsefalsefalsetruefalse36truetruetrue0.05850.0585falsefalsefalsetruefalse37truetruetrue0.05800.0580falsefalsefalsetruefalse38truetruetrue0.04070.0407falsefalsefalsetruefalse39truetruetrue0.03930.0393falsefalsefalsetruefalse40truetruetrue0.05620.0562falsefalsefalsetruefalse41truetruetrue0.05800.0580falsefalsefalsetruefalse42truetruetrue0.03940.0394falsefalsefalsetruefalse43truetruetrue0.03790.0379falsefalsefalsetruefalse44truetruetrue0.05850.0585falsefalsefalsetruefalse45truetruetrue0.05800.0580falsefalsefalsetruefalse46truetruetrue0.04070.0407falsefalsefalsetruefalse47truetruetrue0.03930.0393falsefalsefalsetruefalse48falsetruetrue00falsefalsefalsetruefalse49falsetruetrue00falsefalsefalsetruefalse50falsetruetrue00falsefalsefalsetruefalse51falsetruetrue00falsefalsefalsetruefalse52falsetruetrue00falsefalsefalsetruefalse53falsetruetrue00falsefalsefalsetruefalse54falsetruetrue00falsefalsefalsetruefalse55falsetruetrue00falsefalsefalsetruefalse56falsetruetrue00falsefalsefalsetruefalse57falsetruetrue00falsefalsefalsetruefalse58falsetruetrue00falsefalsefalsetruefalse59falsetruetrue00falsefalsefalsetruefalse60truetruetrue0.02510.0251falsefalsefalsetruefalse61truetruetrue0.04860.0486falsefalsefalsetruefalse62truetruetrue0.02020.0202falsefalsefalsetruefalse63truetruetrue0.02090.0209falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, 5 YearsfalseUSDfalsefalse$4falseColumnprimaryElement*6false0rr_AverageAnnualReturnYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruetrue00falsefalsefalsetruefalse2falsetruetrue00falsefalsefalsetruefalse3falsetruetrue00falsefalsefalsetruefalse4falsetruetrue00falsefalsefalsetruefalse5falsetruetrue00falsefalsefalsetruefalse6falsetruetrue00falsefalsefalsetruefalse7falsetruetrue00falsefalsefalsetruefalse8falsetruetrue00falsefalsefalsetruefalse9falsetruetrue00falsefalsefalsetruefalse10falsetruetrue00falsefalsefalsetruefalse11falsetruetrue00falsefalsefalsetruefalse12falsetruetrue00falsefalsefalsetruefalse13falsetruetrue00falsefalsefalsetruefalse14falsetruetrue00falsefalsefalsetruefalse15falsetruetrue00falsefalsefalsetruefalse16falsetruetrue00falsefalsefalsetruefalse17falsetruetrue00falsefalsefalsetruefalse18falsetruetrue00falsefalsefalsetruefalse19falsetruetrue00falsefalsefalsetruefalse20falsetruetrue00falsefalsefalsetruefalse21falsetruetrue00falsefalsefalsetruefalse22falsetruetrue00falsefalsefalsetruefalse23falsetruetrue00falsefalsefalsetruefalse24falsetruetrue00falsefalsefalsetruefalse25falsetruetrue00falsefalsefalsetruefalse26falsetruetrue00falsefalsefalsetruefalse27falsetruetrue00falsefalsefalsetruefalse28falsetruetrue00falsefalsefalsetruefalse29falsetruetrue00falsefalsefalsetruefalse30falsetruetrue00falsefalsefalsetruefalse31falsetruetrue00falsefalsefalsetruefalse32falsetruetrue00falsefalsefalsetruefalse33falsetruetrue00falsefalsefalsetruefalse34falsetruetrue00falsefalsefalsetruefalse35falsetruetrue00falsefalsefalsetruefalse36truetruetrue0.05730.0573falsefalsefalsetruefalse37truetruetrue0.05840.0584falsefalsefalsetruefalse38truetruetrue0.03830.0383falsefalsefalsetruefalse39truetruetrue0.03770.0377falsefalsefalsetruefalse40truetruetrue0.05470.0547falsefalsefalsetruefalse41truetruetrue0.05840.0584falsefalsefalsetruefalse42truetruetrue0.03650.0365falsefalsefalsetruefalse43truetruetrue0.03590.0359falsefalsefalsetruefalse44truetruetrue0.05730.0573falsefalsefalsetruefalse45truetruetrue0.05840.0584falsefalsefalsetruefalse46truetruetrue0.03830.0383falsefalsefalsetruefalse47truetruetrue0.03770.0377falsefalsefalsetruefalse48falsetruetrue00falsefalsefalsetruefalse49falsetruetrue00falsefalsefalsetruefalse50falsetruetrue00falsefalsefalsetruefalse51falsetruetrue00falsefalsefalsetruefalse52falsetruetrue00falsefalsefalsetruefalse53falsetruetrue00falsefalsefalsetruefalse54falsetruetrue00falsefalsefalsetruefalse55falsetruetrue00falsefalsefalsetruefalse56falsetruetrue00falsefalsefalsetruefalse57falsetruetrue00falsefalsefalsetruefalse58falsetruetrue00falsefalsefalsetruefalse59falsetruetrue00falsefalsefalsetruefalse60truetruetrue0.05110.0511falsefalsefalsetruefalse61truetruetrue0.06980.0698falsefalsefalsetruefalse62truetruetrue0.04640.0464falsefalsefalsetruefalse63truetruetrue0.04390.0439falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, 10 YearsfalseUSDfalsefalse$5falseColumnprimaryElement*7false0rr_AverageAnnualReturnSinceInceptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.04840.0484falsefalsefalsetruefalse2truetruetrue0.04560.0456falsefalsefalsetruefalse3truetruetrue0.04290.0429falsefalsefalsetruefalse4truetruetrue0.03980.0398falsefalsefalsetruefalse5truetruetrue0.04490.0449falsefalsefalsetruefalse6truetruetrue0.04560.0456falsefalsefalsetruefalse7truetruetrue0.03900.0390falsefalsefalsetruefalse8truetruetrue0.03620.0362falsefalsefalsetruefalse9truetruetrue0.04840.0484falsefalsefalsetruefalse10truetruetrue0.04560.0456falsefalsefalsetruefalse11truetruetrue0.04290.0429falsefalsefalsetruefalse12truetruetrue0.03980.0398falsefalsefalsetruefalse13truetruetrue-0.0243-0.0243falsefalsefalsetruefalse14truetruetrue0.00410.0041falsefalsefalsetruefalse15truetruetrue0.02580.0258falsefalsefalsetruefalse16truetruetrue-0.0273-0.0273falsefalsefalsetruefalse17truetruetrue-0.0215-0.0215falsefalsefalsetruefalse18truetruetrue-0.0272-0.0272falsefalsefalsetruefalse19truetruetrue0.00410.0041falsefalsefalsetruefalse20truetruetrue0.02580.0258falsefalsefalsetruefalse21truetruetrue-0.0304-0.0304falsefalsefalsetruefalse22truetruetrue-0.0242-0.0242falsefalsefalsetruefalse23truetruetrue-0.0243-0.0243falsefalsefalsetruefalse24truetruetrue0.00410.0041falsefalsefalsetruefalse25truetruetrue0.02580.0258falsefalsefalsetruefalse26truetruetrue-0.0273-0.0273falsefalsefalsetruefalse27truetruetrue-0.0215-0.0215falsefalsefalsetruefalse28truetruetrue0.00780.0078falsefalsefalsetruefalse29truetruetrue-0.0201-0.0201falsefalsefalsetruefalse30truetruetrue0.00470.0047falsefalsefalsetruefalse31truetruetrue0.00540.0054falsefalsefalsetruefalse32truetruetrue0.00780.0078falsefalsefalsetruefalse33truetruetrue-0.0201-0.0201falsefalsefalsetruefalse34truetruetrue0.00470.0047falsefalsefalsetruefalse35truetruetrue0.00540.0054falsefalsefalsetruefalse36truetruetrue0.06860.0686falsefalsefalsetruefalse37truetruetrue0.07350.0735falsefalsefalsetruefalse38truetruetrue0.04530.0453falsefalsefalsetruefalse39truetruetrue0.04490.0449falsefalsefalsetruefalse40truetruetrue0.06430.0643falsefalsefalsetruefalse41truetruetrue0.07350.0735falsefalsefalsetruefalse42truetruetrue0.04150.0415falsefalsefalsetruefalse43truetruetrue0.04130.0413falsefalsefalsetruefalse44truetruetrue0.06860.0686falsefalsefalsetruefalse45falsetruetrue00falsefalsefalsetruefalse46truetruetrue0.04530.0453falsefalsefalsetruefalse47truetruetrue0.04490.0449falsefalsefalsetruefalse48truetruetrue0.07900.0790falsefalsefalsetruefalse49truetruetrue0.06270.0627falsefalsefalsetruefalse50truetruetrue0.05820.0582falsefalsefalsetruefalse51truetruetrue0.05560.0556falsefalsefalsetruefalse52truetruetrue0.07900.0790falsefalsefalsetruefalse53truetruetrue0.06270.0627falsefalsefalsetruefalse54truetruetrue0.05820.0582falsefalsefalsetruefalse55truetruetrue0.05560.0556falsefalsefalsetruefalse56truetruetrue0.07900.0790falsefalsefalsetruefalse57truetruetrue0.06270.0627falsefalsefalsetruefalse58truetruetrue0.05820.0582falsefalsefalsetruefalse59truetruetrue0.05560.0556falsefalsefalsetruefalse60truetruetrue0.04830.0483falsefalsefalsetruefalse61truetruetrue0.06760.0676falsefalsefalsetruefalse62truetruetrue0.04370.0437falsefalsefalsetruefalse63truetruetrue0.04140.0414falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, Since InceptionfalseUSDfalsefalse$6falseColumnprimaryElement*8false0rr_AverageAnnualReturnInceptionDaterrfalsenadurationNo definition 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Distributionsrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsMemberrr_PerformanceMeasureAxisexplicitMemberSIMT CORE FIXED INCOME FUNDSIMT CORE FIXED INCOME FUND - CLASS IAfter Taxes on DistributionsStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class I Return After Taxes on DistributionsClass I Return After Taxes on Distributionsfalsefalsefalsetruefalse2truetruetrue0.09450.0945falsefalsefalsetruefalse3truetruetrue0.03940.0394falsefalsefalsetruefalse4truetruetrue0.03650.0365falsefalsefalsetruefalse5truetruetrue0.04150.0415falsefalsefalsetruefalse6falsetruefalse001987-05-011987-05-01[1]falsefalsetruetruefalseOthernanafalsefalseSIMT CORE FIXED INCOME FUND - CLASS I After Taxes on Distributions4falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006667MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000018186MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT CORE FIXED INCOME FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006667Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT CORE FIXED INCOME FUND - CLASS Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000018186Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseAfter Taxes on Distributions and Salesrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsAndSalesMemberrr_PerformanceMeasureAxisexplicitMemberSIMT CORE FIXED INCOME FUNDSIMT CORE FIXED INCOME FUND - CLASS IAfter Taxes on Distributions and SalesStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund SharesClass I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse2truetruetrue0.07050.0705falsefalsefalsetruefalse3truetruetrue0.03790.0379falsefalsefalsetruefalse4truetruetrue0.03590.0359falsefalsefalsetruefalse5truetruetrue0.04130.0413falsefalsefalsetruefalse6falsetruefalse001987-05-011987-05-01[1]falsefalsetruetruefalseOthernanafalsefalseSIMT CORE FIXED INCOME FUND - CLASS I After Taxes on Distributions and Sales1Index returns are shown from May 31, 1987.64Average Annual Total Returns SIMT CORE FIXED INCOME FUNDUnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006667MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000018186MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to PerformanceTableData.No authoritative reference available.falsefalsePerformance [Table]291false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturn1falsefalsefalse00SIMT CORE FIXED INCOME FUND | SIMT CORE FIXED INCOME FUND - CLASS GSIMT CORE FIXED INCOME FUND | SIMT CORE FIXED INCOME FUND - CLASS Gfalsefalsefalsefalsefalse11falsefalseUSDtruefalse{dei_LegalEntityAxis} : SIMT CORE FIXED INCOME FUND {rr_ProspectusShareClassAxis} : SIMT CORE FIXED INCOME FUND - CLASS G 1/29/2010 - 2/4/2011 USD ($) $eol_0001104659-11-005144_STD_372_20110204_0_396770x-9996101_429423x-9996125http://www.sec.gov/CIK0000804239duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseck0000804239_S000006667Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006667Memberdei_LegalEntityAxisexplicitMemberfalsefalseck0000804239_C000073414Memberrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073414Memberrr_ProspectusShareClassAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0iso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseSIMT CORE FIXED INCOME FUND | SIMT CORE FIXED INCOME FUND - CLASS G293false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00CORE FIXED INCOME FUNDfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return, Heading294false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment GoalfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment Objective, Heading295false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Current income consistent with the preservation of capital.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseinvestment Objective, Primary296false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and ExpensesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpense, Heading297false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This table describes the fees and expenses that you may pay if you buy and hold Fund shares.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseExpense, Narrative298false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00SHAREHOLDER FEES (fees paid directly from your investment )falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees, Caption299false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073414Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073414Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/ShareholderFeesDatafalsefalse020010 - Schedule - Shareholder Feestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006667MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073414MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT CORE FIXED INCOME FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006667Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT CORE FIXED INCOME FUND - CLASS Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073414Memberrr_ProspectusShareClassAxisexplicitMemberSIMT CORE FIXED INCOME FUNDSIMT CORE FIXED INCOME FUND - CLASS Giso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_RedemptionFeeOverRedemptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truetruetrue0.00500.0050[2]falsefalsefalsetruefalse2truetruetrue0.00500.0050[2]falsefalsefalsetruefalse3truetruetrue0.00500.0050[1]falsefalsefalsetruefalse4truetruetrue0.00750.0075[2]falsefalsefalsetruefalse5truetruetrue0.00750.0075[2]falsefalsefalsetruefalse6truetruetrue0.00750.0075[2]falsefalsefalsetruefalse7truetruetrue0.00500.0050[2]falsefalsefalsetruefalse8truetruetrue0.00500.0050[2]falsefalsefalsetruefalse9truetruetrue0.00600.0060[3]falsefalsefalsetruefalse10truetruetrue0.00600.0060[4]falsefalsefalsetruefalse11truetruetrue0.00600.0060[3]falsefalsefalsetruefalse12truetruetrue0.00600.0060[3]falsefalsefalsetruefalse13truetruetrue0.00600.0060[4]falsefalsefalsetruefalse14truetruetrue0.00600.0060[3]falsefalsefalsetruefalse15truetruetrue0.00250.0025[2]falsefalsefalsetruefalse16truetruetrue0.01000.0100[2]falsefalsefalsetruefalseOtherrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph b -Subsection instructions falsefalseRedemption fee0rr_RedemptionFeeOverRedemptiontruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue0.00600.0060falsefalsefalsetruefalseOthernanafalsefalseRedemption fee1(applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $50 million within any thirty (30) day period)11Shareholder Fees UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006667MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073414MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No authoritative reference available.falsefalseShareholder Fees [Table]300false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses, Caption301false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073414Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073414Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/OperatingExpensesDatafalsefalse020020 - Schedule - Annual Fund Operating Expensestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006667MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073414MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT CORE FIXED INCOME FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006667Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT CORE FIXED INCOME FUND - CLASS Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073414Memberrr_ProspectusShareClassAxisexplicitMemberSIMT CORE FIXED INCOME FUNDSIMT CORE FIXED INCOME FUND - CLASS Giso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00650.0065falsefalsefalsetruefalse2truetruetrue0.00650.0065falsefalsefalsetruefalse3truetruetrue0.00650.0065falsefalsefalsetruefalse4truetruetrue0.00650.0065falsefalsefalsetruefalse5truetruetrue0.00650.0065falsefalsefalsetruefalse6truetruetrue0.00650.0065falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00280.0028falsefalsefalsetruefalse10truetruetrue0.00280.0028falsefalsefalsetruefalse11truetruetrue0.00280.0028falsefalsefalsetruefalse12truetruetrue0.00280.0028falsefalsefalsetruefalse13truetruetrue0.00280.0028falsefalsefalsetruefalse14truetruetrue0.00280.0028falsefalsefalsetruefalse15truetruetrue0.01500.0150falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement Fees0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00280.0028falsefalsefalsetruefalseOthernanafalsefalseManagement Fees2falseRowprimaryElement*4false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.000.00falsefalsefalsetruefalse2truetruetrue0.000.00falsefalsefalsetruefalse3truetruetrue0.00250.0025falsefalsefalsetruefalse4truetruetrue0.000.00falsefalsefalsetruefalse5truetruetrue0.000.00falsefalsefalsetruefalse6truetruetrue0.00250.0025falsefalsefalsetruefalse7truetruetrue0.000.00falsefalsefalsetruefalse8truetruetrue0.00250.0025falsefalsefalsetruefalse9truetruetrue0.000.00falsefalsefalsetruefalse10truetruetrue0.000.00falsefalsefalsetruefalse11truetruetrue0.00250.0025falsefalsefalsetruefalse12truetruetrue0.000.00falsefalsefalsetruefalse13truetruetrue0.000.00falsefalsefalsetruefalse14truetruetrue0.00250.0025falsefalsefalsetruefalse15truetruetrue0.000.00falsefalsefalsetruefalse16truetruetrue0.00250.0025falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution (12b-1) Fees0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsetruefalseOthernanafalsefalseDistribution (12b-1) Fees3falseRowprimaryElement*5false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00640.0064falsefalsefalsetruefalse2truetruetrue0.00890.0089falsefalsefalsetruefalse3truetruetrue0.00640.0064falsefalsefalsetruefalse4truetruetrue0.00670.0067falsefalsefalsetruefalse5truetruetrue0.00920.0092falsefalsefalsetruefalse6truetruetrue0.00670.0067falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00580.0058falsefalsefalsetruefalse10truetruetrue0.00830.0083falsefalsefalsetruefalse11truetruetrue0.00580.0058falsefalsefalsetruefalse12truetruetrue0.00590.0059falsefalsefalsetruefalse13truetruetrue0.00840.0084falsefalsefalsetruefalse14truetruetrue0.00590.0059falsefalsefalsetruefalse15truetruetrue0.00690.0069[2]falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther Expenses0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00580.0058falsefalsefalsetruefalseOthernanafalsefalseOther Expenses4falseRowprimaryElement*7false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01290.0129falsefalsefalsetruefalse2truetruetrue0.01540.0154falsefalsefalsetruefalse3truetruetrue0.01540.0154falsefalsefalsetruefalse4truetruetrue0.01320.0132falsefalsefalsetruefalse5truetruetrue0.01570.0157falsefalsefalsetruefalse6truetruetrue0.01570.0157falsefalsefalsetruefalse7truetruetrue0.01300.0130falsefalsefalsetruefalse8truetruetrue0.01550.0155falsefalsefalsetruefalse9truetruetrue0.00860.0086falsefalsefalsetruefalse10truetruetrue0.01110.0111falsefalsefalsetruefalse11truetruetrue0.01110.0111falsefalsefalsetruefalse12truetruetrue0.00870.0087falsefalsefalsetruefalse13truetruetrue0.01120.0112falsefalsefalsetruefalse14truetruetrue0.01120.0112falsefalsefalsetruefalse15truetruetrue0.02930.0293falsefalsefalsetruefalse16truetruetrue0.01550.0155falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph d -Subsection instructions falsefalseTotal Annual Fund Operating Expenses0rr_ExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01110.0111falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses14Annual Fund Operating Expenses UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006667MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073414MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Table]302false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00EXAMPLEfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, Heading303false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and that you sell your shares at the end of each period. The Example also assumes that each year your investment has a 5% return, Fund operating expenses remain the same and you reinvest all dividends and distributions.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative304false0rr_ExpenseExampleByYearCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Although your actual costs and returns might be different, your approximate costs of investing $10,000 in the Fund would be:falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, By Year, Caption305false0rr_ExpenseExampleWithRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073414Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073414Member row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/ExpenseExamplefalsefalse020030 - Schedule - Expense Example {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue131131falsefalsefalsetruefalse2truefalsetrue157157falsefalsefalsetruefalse3truefalsetrue157157falsefalsefalsetruefalse4truefalsetrue134134falsefalsefalsetruefalse5truefalsetrue160160falsefalsefalsetruefalse6truefalsetrue160160falsefalsefalsetruefalse7truefalsetrue132132falsefalsefalsetruefalse8truefalsetrue158158falsefalsefalsetruefalse9truefalsetrue8888falsefalsefalsetruefalse10truefalsetrue113113falsefalsefalsetruefalse11truefalsetrue113113falsefalsefalsetruefalse12truefalsetrue8989falsefalsefalsetruefalse13truefalsetrue114114falsefalsefalsetruefalse14truefalsetrue114114falsefalsefalsetruefalse15truefalsetrue296296falsefalsefalsetruefalse16truefalsetrue158158falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, With Redemption, 1 YearfalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.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:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 3 YearsfalseUSDfalsefalse$3falseColumnprimaryElement*5false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue708708falsefalsefalsetruefalse2truefalsetrue839839falsefalsefalsetruefalse3truefalsetrue839839falsefalsefalsetruefalse4truefalsetrue723723falsefalsefalsetruefalse5truefalsetrue855855falsefalsefalsetruefalse6truefalsetrue855855falsefalsefalsetruefalse7truefalsetrue713713falsefalsefalsetruefalse8truefalsetrue845845falsefalsefalsetruefalse9truefalsetrue477477falsefalsefalsetruefalse10truefalsetrue612612falsefalsefalsetruefalse11truefalsetrue612612falsefalsefalsetruefalse12truefalsetrue482482falsefalsefalsetruefalse13truefalsetrue617617falsefalsefalsetruefalse14truefalsetrue617617falsefalsefalsetruefalse15falsefalsetrue00falsefalsefalsetruefalse16truefalsetrue845845falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 5 YearsfalseUSDfalsefalse$4falseColumnprimaryElement*6false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.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:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 10 YearsfalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006667MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000073414MemberRowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT CORE FIXED INCOME FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006667Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT CORE FIXED INCOME FUND - CLASS Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073414Memberrr_ProspectusShareClassAxisexplicitMemberSIMT CORE FIXED INCOME FUNDSIMT CORE FIXED INCOME FUND - CLASS Giso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue113113falsefalsefalsetruefalse2truefalsetrue353353falsefalsefalsetruefalse3truefalsetrue612612falsefalsefalsetruefalse4truefalsetrue13521352falsefalsefalsetruefalseOthernanafalsefalseSIMT CORE FIXED INCOME FUND SIMT CORE FIXED INCOME FUND - CLASS G41Expense Example (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006667MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000073414MemberRowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExample.No authoritative reference available.falsefalseExpense Example, With Redemption [Table]306false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00PORTFOLIO TURNOVERfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover, Heading307false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 283% of the average value of its portfolio.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover308false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Investment StrategiesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Heading309false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Under normal circumstances, the Core Fixed Income Fund will invest at least 80% of its net assets in fixed income securities. The Fund will invest primarily in investment and non-investment grade U.S. and foreign corporate and government fixed income securities, including emerging market, asset-backed securities and mortgage-backed securities. The Fund may invest in securities denominated in either U.S. dollars or foreign currency. The Fund uses a multi-manager approach, relying upon a number of sub-advisers with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation (SIMC), the Fund's adviser. Sub-advisers are selected for their expertise in managing various kinds of fixed income securities, and each sub-adviser makes investment decisions based on an analysis of yield trends, credit ratings, and other factors in accordance with its particular discipline. The Fund may also invest in futures contracts, forward contracts and swaps for speculative or hedging purposes. Futures, forwards and swaps are used to synthetically obtain exposure to securities or baskets of securities and to manage the Fund's interest rate duration and yield curve exposure. These derivatives are also used to mitigate the Fund's overall level of risk and/or the Fund's risk to particular types of securities, currencies or market segments. Interest rate swaps are further used to manage the Fund's yield spread sensitivity. When the Fund seeks to take an active long or short position with respect to the likelihood of an event of default of a security or basket of securities, the Fund may use credit default swaps. The Fund may buy credit default swaps in an attempt to manage credit risk where the Fund has credit exposure to an issuer and the Fund may sell credit default swaps to more efficiently gain credit exposure to such security or basket of securities. The sub-advisers may also engage in currency transactions using futures and foreign currency forward contracts either to seek to hedge the Fund's currency exposure or to enhance the Fund's returns. The Fund may take long and short positions in foreign currencies in excess of the value of the Fund's assets denominated in a particular currency or when the Fund does not own assets denominated in that currency. The Fund will invest primarily in investment grade securities (those rated AAA, AA, A and BBB-). However, the Fund may invest in non-rated securities or securities rated below investment grade (BB+, B and CCC). The Fund also invests a portion of its assets in bank loans, which are, generally, non-investment grade (junk bond) floating rate instruments. The Fund may invest in bank loans in the form of participations in the loans (participations) and assignments of all or a portion of the loans from third parties (assignments). While each sub-adviser chooses securities of different types and maturities, the Fund in the aggregate generally will have a dollar-weighted average duration that is consistent with that of the broad U.S. fixed income market as represented by the Barclays Capital U.S. Aggregate Bond Index. The dollar-weighted average duration of the Barclays Capital U.S. Aggregate Bond Index varies significantly over time, but as of December 31, 2010 it was 4.98 years. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security's price to changes in interest rates.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Narrative310false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal RisksfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk, Heading311false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Asset-backed Securities Risk - Payment of principal and interest on asset-backed securities is dependent largely on the cash flows generated by the assets backing the securities and asset-backed securities may not have the benefit of any security interest in the related assets. Bank Loans Risk - With respect to bank loans, the Fund will assume the credit risk of both the borrower and the lender that is selling the participation. The Fund may also have difficulty disposing of bank loans because, in certain cases, the market for such instruments is not highly liquid. Below Investment Grade Securities Risk - Fixed income securities rated below investment grade (junk bonds) involve greater risks of default or downgrade and are more volatile than investment grade securities. Corporate Fixed Income Securities Risk - Corporate fixed income securities respond to economic developments, especially changes in interest rates, as well as perceptions of the creditworthiness and business prospects of individual issuers. Credit Risk - The risk that the issuer of a security, or the counterparty to a contract, will default or otherwise become unable to honor a financial obligation. Currency Risk - Due to the Fund's active positions in currencies, it will be subject to the risk that currency exchange rates may fluctuate in response to, among other things, changes in interest rates, intervention (or failure to intervene) by U.S. or foreign governments, central banks or supranational entities, or by the imposition of currency controls or other political developments in the United States or abroad. Derivatives Risk - The Fund's use of futures, forwards and swaps is subject to market risk, leverage risk, correlation risk and liquidity risk. Leverage risk and liquidity risk are described below. Market risk is the risk that the market value of an investment may move up and down, sometimes rapidly and unpredictably. Correlation risk is the risk that changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index. The Fund's use of forwards and swap agreements is also subject to credit risk and valuation risk. Valuation risk is the risk that the derivative may be difficult to value and/or valued incorrectly. Credit risk is described above. Each of these risks could cause the Fund to lose more than the principal amount invested in a derivative instrument. Exchange-Traded Funds (ETFs) Risk - The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio securities. Fixed Income Market Risk - The prices of the Fund's fixed income securities respond to economic developments, particularly interest rate changes, as well as to perceptions about the creditworthiness of individual issuers, including governments and their agencies. In the case of foreign securities, price fluctuations will reflect international economic and political events, as well as changes in currency valuations relative to the U.S. dollar. Foreign Investment/Emerging Markets Risk - The risk that non-U.S. securities may be subject to additional risks due to, among other things, political, social and economic developments abroad, currency movements, and different legal, regulatory and tax environments. These additional risks may be heightened with respect to emerging market countries since political turmoil and rapid changes in economic conditions are more likely to occur in these countries. Interest Rate Risk - The risk that the value of fixed income securities, including U.S. Government securities, will fall due to rising interest rates. Investment Style Risk - The risk that U.S. fixed income securities may underperform other segments of the fixed income markets or the fixed income markets as a whole. Leverage Risk - The use of leverage can amplify the effects of market volatility on the Fund's share price and may also cause the Fund to liquidate portfolio positions when it would not be advantageous to do so in order to satisfy its obligations. Liquidity Risk - The risk that certain securities may be difficult or impossible to sell at the time and the price that the Fund would like. The Fund may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance. Mortgage-backed Securities Risk - Mortgage-backed securities are affected by, among other things, interest rate changes and the possibility of prepayment of the underlying mortgage loans. Mortgage-backed securities are also subject to the risk that underlying borrowers will be unable to meet their obligations. Portfolio Turnover Risk - Due to its investment strategy, the Fund may buy and sell securities frequently. This may result in higher transaction costs and additional capital gains tax liabilities. U.S. Government Securities Risk - Although U.S. Government securities are considered to be among the safest investments, they are not guaranteed against price movements due to changing interest rates. Obligations issued by some U.S. Government agencies are backed by the U.S. Treasury, while others are backed solely by the ability of the agency to borrow from the U.S. Treasury or by the agency's own resources. Loss of money is a risk of investing in the Fund.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk, Narrative312false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Performance InformationfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table, Heading313false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>As of January 31, 2011, Class G Shares of the Fund had not commenced operations, and did not have a performance history. The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years, and since the Fund's inception, compared with those of a broad measure of market performance. Since Class G Shares are invested in the same portfolio of securities, return for Class G Shares will be substantially similar to those of Class A Shares, shown here, and will differ only to the extent that Class G Shares have higher expenses. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance, Narrative314false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073414Member row primary compact * ~</div>falsefalseBarChart11.jpg<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073414Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/BarChartDatafalsefalse020050 - Schedule - Annual Total Returnstruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006667MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073414MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT CORE FIXED INCOME FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006667Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT CORE FIXED INCOME FUND - CLASS Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073414Memberrr_ProspectusShareClassAxisexplicitMemberSIMT CORE FIXED INCOME FUNDSIMT CORE FIXED INCOME FUND - CLASS Giso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_AnnualReturn2001rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00falsefalsefalsetruefalse2falsetruefalse00falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.06950.0695falsefalsefalsetruefalse10truetruefalse0.06560.0656falsefalsefalsetruefalse11truetruefalse0.06950.0695falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse-0.0296-0.0296falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20010rr_AnnualReturn2001truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.06950.0695falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20012falseRowprimaryElement*4false0rr_AnnualReturn2002rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00falsefalsefalsetruefalse2falsetruefalse00falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.09100.0910falsefalsefalsetruefalse10truetruefalse0.08830.0883falsefalsefalsetruefalse11truetruefalse0.09100.0910falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse-0.1912-0.1912falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20020rr_AnnualReturn2002truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.09100.0910falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20023falseRowprimaryElement*5false0rr_AnnualReturn2003rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00falsefalsefalsetruefalse2falsetruefalse00falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.05320.0532falsefalsefalsetruefalse10truetruefalse0.05060.0506falsefalsefalsetruefalse11truetruefalse0.05320.0532falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.4870.487falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20030rr_AnnualReturn2003truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05320.0532falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20034falseRowprimaryElement*6false0rr_AnnualReturn2004rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00falsefalsefalsetruefalse2falsetruefalse00falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.04660.0466falsefalsefalsetruefalse10truetruefalse0.04410.0441falsefalsefalsetruefalse11truetruefalse0.04660.0466falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.16620.1662falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20040rr_AnnualReturn2004truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.04660.0466falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20045falseRowprimaryElement*7false0rr_AnnualReturn2005rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05780.0578falsefalsefalsetruefalse2truetruefalse0.05380.0538falsefalsefalsetruefalse3truetruefalse0.05780.0578falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.02180.0218falsefalsefalsetruefalse10truetruefalse0.01830.0183falsefalsefalsetruefalse11truetruefalse0.02180.0218falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.06840.0684falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20050rr_AnnualReturn2005truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.02180.0218falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20056falseRowprimaryElement*8false0rr_AnnualReturn2006rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.13750.1375falsefalsefalsetruefalse2truetruefalse0.13320.1332falsefalsefalsetruefalse3truetruefalse0.13750.1375falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.04550.0455falsefalsefalsetruefalse10truetruefalse0.04390.0439falsefalsefalsetruefalse11truetruefalse0.04550.0455falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.12340.1234falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20060rr_AnnualReturn2006truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.04550.0455falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20067falseRowprimaryElement*9false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.08270.0827falsefalsefalsetruefalse2truetruefalse0.0790.079falsefalsefalsetruefalse3truetruefalse0.08270.0827falsefalsefalsetruefalse4truetruefalse0.00030.0003falsefalsefalsetruefalse5truetruefalse-0.0039-0.0039falsefalsefalsetruefalse6truetruefalse0.00030.0003falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.04040.0404falsefalsefalsetruefalse10truetruefalse0.03780.0378falsefalsefalsetruefalse11truetruefalse0.04040.0404falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.01650.0165falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20070rr_AnnualReturn2007truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.04040.0404falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20078falseRowprimaryElement*10false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2908-0.2908falsefalsefalsetruefalse2truetruefalse-0.2929-0.2929falsefalsefalsetruefalse3truetruefalse-0.2908-0.2908falsefalsefalsetruefalse4truetruefalse-0.2713-0.2713falsefalsefalsetruefalse5truetruefalse-0.2738-0.2738falsefalsefalsetruefalse6truetruefalse-0.2713-0.2713falsefalsefalsetruefalse7truetruefalse-0.2453-0.2453falsefalsefalsetruefalse8truetruefalse-0.2453-0.2453falsefalsefalsetruefalse9truetruefalse-0.0713-0.0713falsefalsefalsetruefalse10truetruefalse-0.0735-0.0735falsefalsefalsetruefalse11truetruefalse-0.0713-0.0713falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse-0.4116-0.4116falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20080rr_AnnualReturn2008truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.0713-0.0713falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20089falseRowprimaryElement*11false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.16240.1624falsefalsefalsetruefalse2truetruefalse0.15850.1585falsefalsefalsetruefalse3truetruefalse0.16240.1624falsefalsefalsetruefalse4truetruefalse0.03890.0389falsefalsefalsetruefalse5truetruefalse0.03560.0356falsefalsefalsetruefalse6truetruefalse0.03890.0389falsefalsefalsetruefalse7truetruefalse0.18250.1825falsefalsefalsetruefalse8truetruefalse0.18250.1825falsefalsefalsetruefalse9truetruefalse0.18480.1848falsefalsefalsetruefalse10truetruefalse0.18110.1811falsefalsefalsetruefalse11truetruefalse0.18480.1848falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.35780.3578falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20090rr_AnnualReturn2009truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.18480.1848falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 200910falseRowprimaryElement*12false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14880.1488falsefalsefalsetruefalse2truetruefalse0.14630.1463falsefalsefalsetruefalse3truetruefalse0.14880.1488falsefalsefalsetruefalse4truetruefalse0.07170.0717falsefalsefalsetruefalse5truetruefalse0.0710.071falsefalsefalsetruefalse6truetruefalse0.07170.0717falsefalsefalsetruefalse7truetruefalse0.15210.1521falsefalsefalsetruefalse8truetruefalse0.15210.1521falsefalsefalsetruefalse9truetruefalse0.11010.1101falsefalsefalsetruefalse10truetruefalse0.10880.1088falsefalsefalsetruefalse11truetruefalse0.11010.1101falsefalsefalsetruefalse12truetruefalse0.07520.0752falsefalsefalsetruefalse13truetruefalse0.07520.0752falsefalsefalsetruefalse14truetruefalse0.07520.0752falsefalsefalsetruefalse15truetruefalse0.24070.2407falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20100rr_AnnualReturn2010truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.11010.1101falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 2010110Annual Total Returns UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006667MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073414MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to BarChartData.No authoritative reference available.falsefalseBar Chart [Table]315false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Best Quarter: 8.12% (09/30/09) Worst Quarter: -3.23% (09/30/08)</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart, Closing316false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalsePerformance Table, Heading317false0rr_PerformanceTableNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This table compares the Fund's average annual total returns for Class A Shares to those of the Barclays Capital U.S. Aggregate Bond Index. The Barclays Capital U.S. Aggregate Bond Index is a widely-recognized, market-weighted (higher market value bonds have more influence than lower market value bonds) index of U.S. Government obligations, corporate debt securities and AAA rated mortgage-backed securities. All securities in the index are rated investment grade (BBB-) or higher, with maturities of at least 1 year. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also shouldshow the returns of an appropriate broadbased securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____). For a Fund that provides annual total returns for only one calendar year or for a Fund that does not include the bar chart because it does not have annual returns for a full calendar year, modify, as appropriate, the narrative explanation required by paragraph (c)(2)(i) (e.g., by stating that the information gives some indication of the risks of an investment in the Fund by comparing the Fund's performance with a broad measure of market performance).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iv -Subsection b falsefalsePerformance Table, Narrative318false0rr_AverageAnnualReturnCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 5 -Subsection b falsefalseAverage Annual Returns, Caption319false0rr_PerformanceTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073414Member column rr_PerformanceMeasureAxis compact * row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact ck0000804239_S000006667Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073414Member column rr_PerformanceMeasureAxis compact * row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/PerformanceTableDatafalsefalse020060 - Schedule - Average Annual Total Returns {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_AverageAnnualReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse2falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse3falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse4falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse5falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse6falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse7falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse8falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse9falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse10falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse11falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse12falsetruefalse00Class A Return After Taxes on Distribution and Sale of Fund Sharesfalsefalsefalsetruefalse13falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse14falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse15falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse16falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse17falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse18falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse19falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse20falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse21falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse22falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse23falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse24falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse25falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse26falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse27falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse28falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse29falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse30falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse31falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse32falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse33falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse34falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse35falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse36falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse37falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse38falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse39falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse40falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse41falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse42falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse43falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse44falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse45falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse46falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse47falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse48falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse49falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse50falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse51falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse52falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse53falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse54falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse55falsetruefalse00Class I Return After 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If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, LabelfalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.14880.1488falsefalsefalsetruefalse2truetruetrue0.16930.1693falsefalsefalsetruefalse3truetruetrue0.14350.1435falsefalsefalsetruefalse4truetruetrue0.09650.0965falsefalsefalsetruefalse5truetruetrue0.14630.1463falsefalsefalsetruefalse6truetruetrue0.16930.1693falsefalsefalsetruefalse7truetruetrue0.14190.1419falsefalsefalsetruefalse8truetruetrue0.09490.0949falsefalsefalsetruefalse9truetruetrue0.14880.1488falsefalsefalsetruefalse10truetruetrue0.16930.1693falsefalsefalsetruefalse11truetruetrue0.14350.1435falsefalsefalsetruefalse12truetruetrue0.09650.0965falsefalsefalsetruefalse13truetruetrue0.07170.0717falsefalsefalsetruefalse14truetruetrue0.10460.1046falsefalsefalsetruefalse15truetruetrue0.12030.1203falsefalsefalsetruefalse16truetruetrue0.07170.0717falsefalsefalsetruefalse17truetruetrue0.04660.0466falsefalsefalsetruefalse18truetruetrue0.07100.0710falsefalsefalsetruefalse19truetruetrue0.10460.1046falsefalsefalsetruefalse20truetruetrue0.12030.1203falsefalsefalsetruefalse21truetruetrue0.07100.0710falsefalsefalsetruefalse22truetruetrue0.04610.0461falsefalsefalsetruefalse23truetruetrue0.07170.0717falsefalsefalsetruefalse24truetruetrue0.10460.1046falsefalsefalsetruefalse25truetruetrue0.12030.1203falsefalsefalsetruefalse26truetruetrue0.07170.0717falsefalsefalsetruefalse27truetruetrue0.04660.0466falsefalsefalsetruefalse28truetruetrue0.15210.1521falsefalsefalsetruefalse29truetruetrue0.16930.1693falsefalsefalsetruefalse30truetruetrue0.14670.1467falsefalsefalsetruefalse31truetruetrue0.09860.0986falsefalsefalsetruefalse32truetruetrue0.15210.1521falsefalsefalsetruefalse33truetruetrue0.16930.1693falsefalsefalsetruefalse34truetruetrue0.14670.1467falsefalsefalsetruefalse35truetruetrue0.09860.0986falsefalsefalsetruefalse36truetruetrue0.11010.1101falsefalsefalsetruefalse37truetruetrue0.06540.0654falsefalsefalsetruefalse38truetruetrue0.09500.0950falsefalsefalsetruefalse39truetruetrue0.07130.0713falsefalsefalsetruefalse40truetruetrue0.10880.1088falsefalsefalsetruefalse41truetruetrue0.06540.0654falsefalsefalsetruefalse42truetruetrue0.09450.0945falsefalsefalsetruefalse43truetruetrue0.07050.0705falsefalsefalsetruefalse44truetruetrue0.11010.1101falsefalsefalsetruefalse45truetruetrue0.06540.0654falsefalsefalsetruefalse46truetruetrue0.09500.0950falsefalsefalsetruefalse47truetruetrue0.07130.0713falsefalsefalsetruefalse48truetruetrue0.07520.0752falsefalsefalsetruefalse49truetruetrue0.06540.0654falsefalsefalsetruefalse50truetruetrue0.05190.0519falsefalsefalsetruefalse51truetruetrue0.04970.0497falsefalsefalsetruefalse52truetruetrue0.07520.0752falsefalsefalsetruefalse53truetruetrue0.06540.0654falsefalsefalsetruefalse54truetruetrue0.05190.0519falsefalsefalsetruefalse55truetruetrue0.04970.0497falsefalsefalsetruefalse56truetruetrue0.07520.0752falsefalsefalsetruefalse57truetruetrue0.06540.0654falsefalsefalsetruefalse58truetruetrue0.05190.0519falsefalsefalsetruefalse59truetruetrue0.04970.0497falsefalsefalsetruefalse60truetruetrue0.24070.2407falsefalsefalsetruefalse61truetruetrue0.26710.2671falsefalsefalsetruefalse62truetruetrue0.23950.2395falsefalsefalsetruefalse63truetruetrue0.15640.1564falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, 1 YearfalseUSDfalsefalse$3falseColumnprimaryElement*5false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.03130.0313falsefalsefalsetruefalse2truetruetrue0.02740.0274falsefalsefalsetruefalse3truetruetrue0.02580.0258falsefalsefalsetruefalse4truetruetrue0.02500.0250falsefalsefalsetruefalse5truetruetrue0.02800.0280falsefalsefalsetruefalse6truetruetrue0.02740.0274falsefalsefalsetruefalse7truetruetrue0.02260.0226falsefalsefalsetruefalse8truetruetrue0.02200.0220falsefalsefalsetruefalse9truetruetrue0.03130.0313falsefalsefalsetruefalse10truetruetrue0.02740.0274falsefalsefalsetruefalse11truetruetrue0.02580.0258falsefalsefalsetruefalse12truetruetrue0.02500.0250falsefalsefalsetruefalse13falsetruetrue00falsefalsefalsetruefalse14falsetruetrue00falsefalsefalsetruefalse15falsetruetrue00falsefalsefalsetruefalse16falsetruetrue00falsefalsefalsetruefalse17falsetruetrue00falsefalsefalsetruefalse18falsetruetrue00falsefalsefalsetruefalse19falsetruetrue00falsefalsefalsetruefalse20falsetruetrue00falsefalsefalsetruefalse21falsetruetrue00falsefalsefalsetruefalse22falsetruetrue00falsefalsefalsetruefalse23falsetruetrue00falsefalsefalsetruefalse24falsetruetrue00falsefalsefalsetruefalse25falsetruetrue00falsefalsefalsetruefalse26falsetruetrue00falsefalsefalsetruefalse27falsetruetrue00falsefalsefalsetruefalse28falsetruetrue00falsefalsefalsetruefalse29falsetruetrue00falsefalsefalsetruefalse30falsetruetrue00falsefalsefalsetruefalse31falsetruetrue00falsefalsefalsetruefalse32falsetruetrue00falsefalsefalsetruefalse33falsetruetrue00falsefalsefalsetruefalse34falsetruetrue00falsefalsefalsetruefalse35falsetruetrue00falsefalsefalsetruefalse36truetruetrue0.05850.0585falsefalsefalsetruefalse37truetruetrue0.05800.0580falsefalsefalsetruefalse38truetruetrue0.04070.0407falsefalsefalsetruefalse39truetruetrue0.03930.0393falsefalsefalsetruefalse40truetruetrue0.05620.0562falsefalsefalsetruefalse41truetruetrue0.05800.0580falsefalsefalsetruefalse42truetruetrue0.03940.0394falsefalsefalsetruefalse43truetruetrue0.03790.0379falsefalsefalsetruefalse44truetruetrue0.05850.0585falsefalsefalsetruefalse45truetruetrue0.05800.0580falsefalsefalsetruefalse46truetruetrue0.04070.0407falsefalsefalsetruefalse47truetruetrue0.03930.0393falsefalsefalsetruefalse48falsetruetrue00falsefalsefalsetruefalse49falsetruetrue00falsefalsefalsetruefalse50falsetruetrue00falsefalsefalsetruefalse51falsetruetrue00falsefalsefalsetruefalse52falsetruetrue00falsefalsefalsetruefalse53falsetruetrue00falsefalsefalsetruefalse54falsetruetrue00falsefalsefalsetruefalse55falsetruetrue00falsefalsefalsetruefalse56falsetruetrue00falsefalsefalsetruefalse57falsetruetrue00falsefalsefalsetruefalse58falsetruetrue00falsefalsefalsetruefalse59falsetruetrue00falsefalsefalsetruefalse60truetruetrue0.02510.0251falsefalsefalsetruefalse61truetruetrue0.04860.0486falsefalsefalsetruefalse62truetruetrue0.02020.0202falsefalsefalsetruefalse63truetruetrue0.02090.0209falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, 5 YearsfalseUSDfalsefalse$4falseColumnprimaryElement*6false0rr_AverageAnnualReturnYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruetrue00falsefalsefalsetruefalse2falsetruetrue00falsefalsefalsetruefalse3falsetruetrue00falsefalsefalsetruefalse4falsetruetrue00falsefalsefalsetruefalse5falsetruetrue00falsefalsefalsetruefalse6falsetruetrue00falsefalsefalsetruefalse7falsetruetrue00falsefalsefalsetruefalse8falsetruetrue00falsefalsefalsetruefalse9falsetruetrue00falsefalsefalsetruefalse10falsetruetrue00falsefalsefalsetruefalse11falsetruetrue00falsefalsefalsetruefalse12falsetruetrue00falsefalsefalsetruefalse13falsetruetrue00falsefalsefalsetruefalse14falsetruetrue00falsefalsefalsetruefalse15falsetruetrue00falsefalsefalsetruefalse16falsetruetrue00falsefalsefalsetruefalse17falsetruetrue00falsefalsefalsetruefalse18falsetruetrue00falsefalsefalsetruefalse19falsetruetrue00falsefalsefalsetruefalse20falsetruetrue00falsefalsefalsetruefalse21falsetruetrue00falsefalsefalsetruefalse22falsetruetrue00falsefalsefalsetruefalse23falsetruetrue00falsefalsefalsetruefalse24falsetruetrue00falsefalsefalsetruefalse25falsetruetrue00falsefalsefalsetruefalse26falsetruetrue00falsefalsefalsetruefalse27falsetruetrue00falsefalsefalsetruefalse28falsetruetrue00falsefalsefalsetruefalse29falsetruetrue00falsefalsefalsetruefalse30falsetruetrue00falsefalsefalsetruefalse31falsetruetrue00falsefalsefalsetruefalse32falsetruetrue00falsefalsefalsetruefalse33falsetruetrue00falsefalsefalsetruefalse34falsetruetrue00falsefalsefalsetruefalse35falsetruetrue00falsefalsefalsetruefalse36truetruetrue0.05730.0573falsefalsefalsetruefalse37truetruetrue0.05840.0584falsefalsefalsetruefalse38truetruetrue0.03830.0383falsefalsefalsetruefalse39truetruetrue0.03770.0377falsefalsefalsetruefalse40truetruetrue0.05470.0547falsefalsefalsetruefalse41truetruetrue0.05840.0584falsefalsefalsetruefalse42truetruetrue0.03650.0365falsefalsefalsetruefalse43truetruetrue0.03590.0359falsefalsefalsetruefalse44truetruetrue0.05730.0573falsefalsefalsetruefalse45truetruetrue0.05840.0584falsefalsefalsetruefalse46truetruetrue0.03830.0383falsefalsefalsetruefalse47truetruetrue0.03770.0377falsefalsefalsetruefalse48falsetruetrue00falsefalsefalsetruefalse49falsetruetrue00falsefalsefalsetruefalse50falsetruetrue00falsefalsefalsetruefalse51falsetruetrue00falsefalsefalsetruefalse52falsetruetrue00falsefalsefalsetruefalse53falsetruetrue00falsefalsefalsetruefalse54falsetruetrue00falsefalsefalsetruefalse55falsetruetrue00falsefalsefalsetruefalse56falsetruetrue00falsefalsefalsetruefalse57falsetruetrue00falsefalsefalsetruefalse58falsetruetrue00falsefalsefalsetruefalse59falsetruetrue00falsefalsefalsetruefalse60truetruetrue0.05110.0511falsefalsefalsetruefalse61truetruetrue0.06980.0698falsefalsefalsetruefalse62truetruetrue0.04640.0464falsefalsefalsetruefalse63truetruetrue0.04390.0439falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, 10 YearsfalseUSDfalsefalse$5falseColumnprimaryElement*7false0rr_AverageAnnualReturnSinceInceptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.04840.0484falsefalsefalsetruefalse2truetruetrue0.04560.0456falsefalsefalsetruefalse3truetruetrue0.04290.0429falsefalsefalsetruefalse4truetruetrue0.03980.0398falsefalsefalsetruefalse5truetruetrue0.04490.0449falsefalsefalsetruefalse6truetruetrue0.04560.0456falsefalsefalsetruefalse7truetruetrue0.03900.0390falsefalsefalsetruefalse8truetruetrue0.03620.0362falsefalsefalsetruefalse9truetruetrue0.04840.0484falsefalsefalsetruefalse10truetruetrue0.04560.0456falsefalsefalsetruefalse11truetruetrue0.04290.0429falsefalsefalsetruefalse12truetruetrue0.03980.0398falsefalsefalsetruefalse13truetruetrue-0.0243-0.0243falsefalsefalsetruefalse14truetruetrue0.00410.0041falsefalsefalsetruefalse15truetruetrue0.02580.0258falsefalsefalsetruefalse16truetruetrue-0.0273-0.0273falsefalsefalsetruefalse17truetruetrue-0.0215-0.0215falsefalsefalsetruefalse18truetruetrue-0.0272-0.0272falsefalsefalsetruefalse19truetruetrue0.00410.0041falsefalsefalsetruefalse20truetruetrue0.02580.0258falsefalsefalsetruefalse21truetruetrue-0.0304-0.0304falsefalsefalsetruefalse22truetruetrue-0.0242-0.0242falsefalsefalsetruefalse23truetruetrue-0.0243-0.0243falsefalsefalsetruefalse24truetruetrue0.00410.0041falsefalsefalsetruefalse25truetruetrue0.02580.0258falsefalsefalsetruefalse26truetruetrue-0.0273-0.0273falsefalsefalsetruefalse27truetruetrue-0.0215-0.0215falsefalsefalsetruefalse28truetruetrue0.00780.0078falsefalsefalsetruefalse29truetruetrue-0.0201-0.0201falsefalsefalsetruefalse30truetruetrue0.00470.0047falsefalsefalsetruefalse31truetruetrue0.00540.0054falsefalsefalsetruefalse32truetruetrue0.00780.0078falsefalsefalsetruefalse33truetruetrue-0.0201-0.0201falsefalsefalsetruefalse34truetruetrue0.00470.0047falsefalsefalsetruefalse35truetruetrue0.00540.0054falsefalsefalsetruefalse36truetruetrue0.06860.0686falsefalsefalsetruefalse37truetruetrue0.07350.0735falsefalsefalsetruefalse38truetruetrue0.04530.0453falsefalsefalsetruefalse39truetruetrue0.04490.0449falsefalsefalsetruefalse40truetruetrue0.06430.0643falsefalsefalsetruefalse41truetruetrue0.07350.0735falsefalsefalsetruefalse42truetruetrue0.04150.0415falsefalsefalsetruefalse43truetruetrue0.04130.0413falsefalsefalsetruefalse44truetruetrue0.06860.0686falsefalsefalsetruefalse45falsetruetrue00falsefalsefalsetruefalse46truetruetrue0.04530.0453falsefalsefalsetruefalse47truetruetrue0.04490.0449falsefalsefalsetruefalse48truetruetrue0.07900.0790falsefalsefalsetruefalse49truetruetrue0.06270.0627falsefalsefalsetruefalse50truetruetrue0.05820.0582falsefalsefalsetruefalse51truetruetrue0.05560.0556falsefalsefalsetruefalse52truetruetrue0.07900.0790falsefalsefalsetruefalse53truetruetrue0.06270.0627falsefalsefalsetruefalse54truetruetrue0.05820.0582falsefalsefalsetruefalse55truetruetrue0.05560.0556falsefalsefalsetruefalse56truetruetrue0.07900.0790falsefalsefalsetruefalse57truetruetrue0.06270.0627falsefalsefalsetruefalse58truetruetrue0.05820.0582falsefalsefalsetruefalse59truetruetrue0.05560.0556falsefalsefalsetruefalse60truetruetrue0.04830.0483falsefalsefalsetruefalse61truetruetrue0.06760.0676falsefalsefalsetruefalse62truetruetrue0.04370.0437falsefalsefalsetruefalse63truetruetrue0.04140.0414falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, Since InceptionfalseUSDfalsefalse$6falseColumnprimaryElement*8false0rr_AverageAnnualReturnInceptionDaterrfalsenadurationNo definition 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Before Taxes, SecondaryNo authoritative reference available.falsefalseAverage Annual Returns, Inception Date SecondaryfalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006667MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000073414MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT CORE FIXED INCOME FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006667Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT CORE FIXED INCOME FUND - CLASS Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073414Memberrr_ProspectusShareClassAxisexplicitMembertruefalseBefore Taxesrr_PerformanceMeasureAxisrr_PerformanceMeasureDomainrr_PerformanceMeasureAxisexplicitMemberSIMT CORE FIXED INCOME FUNDSIMT CORE FIXED INCOME FUND - CLASS GBefore 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Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return, Heading323false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment GoalfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment Objective, Heading324false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Current income consistent with the preservation of capital.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseinvestment Objective, Primary325false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and ExpensesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpense, Heading326false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This table describes the fees and expenses that you may pay if you buy and hold Fund shares.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseExpense, Narrative327false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00SHAREHOLDER FEES (fees paid directly from your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees, Caption328false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076445Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076445Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/ShareholderFeesDatafalsefalse020010 - Schedule - Shareholder Feestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000025531MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000076445MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. Fixed Income Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000025531Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000076445Memberrr_ProspectusShareClassAxisexplicitMemberSIMT U.S. Fixed Income FundSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Aiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_RedemptionFeeOverRedemptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truetruetrue0.00500.0050[2]falsefalsefalsetruefalse2truetruetrue0.00500.0050[2]falsefalsefalsetruefalse3truetruetrue0.00500.0050[1]falsefalsefalsetruefalse4truetruetrue0.00750.0075[2]falsefalsefalsetruefalse5truetruetrue0.00750.0075[2]falsefalsefalsetruefalse6truetruetrue0.00750.0075[2]falsefalsefalsetruefalse7truetruetrue0.00500.0050[2]falsefalsefalsetruefalse8truetruetrue0.00500.0050[2]falsefalsefalsetruefalse9truetruetrue0.00600.0060[3]falsefalsefalsetruefalse10truetruetrue0.00600.0060[4]falsefalsefalsetruefalse11truetruetrue0.00600.0060[3]falsefalsefalsetruefalse12truetruetrue0.00600.0060[3]falsefalsefalsetruefalse13truetruetrue0.00600.0060[4]falsefalsefalsetruefalse14truetruetrue0.00600.0060[3]falsefalsefalsetruefalse15truetruetrue0.00250.0025[2]falsefalsefalsetruefalse16truetruetrue0.01000.0100[2]falsefalsefalsetruefalseOtherrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph b -Subsection instructions falsefalseRedemption fee0rr_RedemptionFeeOverRedemptiontruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue0.00600.0060falsefalsefalsetruefalseOthernanafalsefalseRedemption fee1(applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $50 million within any thirty (30) day period)11Shareholder Fees UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000025531MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000076445MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No authoritative reference available.falsefalseShareholder Fees [Table]329false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses, Caption330false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076445Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076445Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/OperatingExpensesDatafalsefalse020020 - Schedule - Annual Fund Operating Expensestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000025531MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000076445MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. Fixed Income Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000025531Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000076445Memberrr_ProspectusShareClassAxisexplicitMemberSIMT U.S. Fixed Income FundSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Aiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00650.0065falsefalsefalsetruefalse2truetruetrue0.00650.0065falsefalsefalsetruefalse3truetruetrue0.00650.0065falsefalsefalsetruefalse4truetruetrue0.00650.0065falsefalsefalsetruefalse5truetruetrue0.00650.0065falsefalsefalsetruefalse6truetruetrue0.00650.0065falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00280.0028falsefalsefalsetruefalse10truetruetrue0.00280.0028falsefalsefalsetruefalse11truetruetrue0.00280.0028falsefalsefalsetruefalse12truetruetrue0.00280.0028falsefalsefalsetruefalse13truetruetrue0.00280.0028falsefalsefalsetruefalse14truetruetrue0.00280.0028falsefalsefalsetruefalse15truetruetrue0.01500.0150falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement Fees0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00280.0028falsefalsefalsetruefalseOthernanafalsefalseManagement Fees2falseRowprimaryElement*4false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.000.00falsefalsefalsetruefalse2truetruetrue0.000.00falsefalsefalsetruefalse3truetruetrue0.00250.0025falsefalsefalsetruefalse4truetruetrue0.000.00falsefalsefalsetruefalse5truetruetrue0.000.00falsefalsefalsetruefalse6truetruetrue0.00250.0025falsefalsefalsetruefalse7truetruetrue0.000.00falsefalsefalsetruefalse8truetruetrue0.00250.0025falsefalsefalsetruefalse9truetruetrue0.000.00falsefalsefalsetruefalse10truetruetrue0.000.00falsefalsefalsetruefalse11truetruetrue0.00250.0025falsefalsefalsetruefalse12truetruetrue0.000.00falsefalsefalsetruefalse13truetruetrue0.000.00falsefalsefalsetruefalse14truetruetrue0.00250.0025falsefalsefalsetruefalse15truetruetrue0.000.00falsefalsefalsetruefalse16truetruetrue0.00250.0025falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution (12b-1) Fees0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.000.00falsefalsefalsetruefalseOthernanafalsefalseDistribution (12b-1) Fees3falseRowprimaryElement*5false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00640.0064falsefalsefalsetruefalse2truetruetrue0.00890.0089falsefalsefalsetruefalse3truetruetrue0.00640.0064falsefalsefalsetruefalse4truetruetrue0.00670.0067falsefalsefalsetruefalse5truetruetrue0.00920.0092falsefalsefalsetruefalse6truetruetrue0.00670.0067falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00580.0058falsefalsefalsetruefalse10truetruetrue0.00830.0083falsefalsefalsetruefalse11truetruetrue0.00580.0058falsefalsefalsetruefalse12truetruetrue0.00590.0059falsefalsefalsetruefalse13truetruetrue0.00840.0084falsefalsefalsetruefalse14truetruetrue0.00590.0059falsefalsefalsetruefalse15truetruetrue0.00690.0069[2]falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther Expenses0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00590.0059falsefalsefalsetruefalseOthernanafalsefalseOther Expenses4falseRowprimaryElement*7false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01290.0129falsefalsefalsetruefalse2truetruetrue0.01540.0154falsefalsefalsetruefalse3truetruetrue0.01540.0154falsefalsefalsetruefalse4truetruetrue0.01320.0132falsefalsefalsetruefalse5truetruetrue0.01570.0157falsefalsefalsetruefalse6truetruetrue0.01570.0157falsefalsefalsetruefalse7truetruetrue0.01300.0130falsefalsefalsetruefalse8truetruetrue0.01550.0155falsefalsefalsetruefalse9truetruetrue0.00860.0086falsefalsefalsetruefalse10truetruetrue0.01110.0111falsefalsefalsetruefalse11truetruetrue0.01110.0111falsefalsefalsetruefalse12truetruetrue0.00870.0087falsefalsefalsetruefalse13truetruetrue0.01120.0112falsefalsefalsetruefalse14truetruetrue0.01120.0112falsefalsefalsetruefalse15truetruetrue0.02930.0293falsefalsefalsetruefalse16truetruetrue0.01550.0155falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph d -Subsection instructions falsefalseTotal Annual Fund Operating Expenses0rr_ExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00870.0087falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses14Annual Fund Operating Expenses UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000025531MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000076445MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Table]331false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00EXAMPLEfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, Heading332false0rr_ExpenseExampleByYearHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Although your actual costs and returns might be different, your approximate costs of investing $10,000 in the Fund would be:falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, By Year, Heading333false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and that you sell your shares at the end of each period. The Example also assumes that each year your investment has a 5% return, Fund operating expenses remain the same and you reinvest all dividends and distributions.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative334false0rr_ExpenseExampleWithRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076445Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076445Member row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/ExpenseExamplefalsefalse020030 - Schedule - Expense Example {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue131131falsefalsefalsetruefalse2truefalsetrue157157falsefalsefalsetruefalse3truefalsetrue157157falsefalsefalsetruefalse4truefalsetrue134134falsefalsefalsetruefalse5truefalsetrue160160falsefalsefalsetruefalse6truefalsetrue160160falsefalsefalsetruefalse7truefalsetrue132132falsefalsefalsetruefalse8truefalsetrue158158falsefalsefalsetruefalse9truefalsetrue8888falsefalsefalsetruefalse10truefalsetrue113113falsefalsefalsetruefalse11truefalsetrue113113falsefalsefalsetruefalse12truefalsetrue8989falsefalsefalsetruefalse13truefalsetrue114114falsefalsefalsetruefalse14truefalsetrue114114falsefalsefalsetruefalse15truefalsetrue296296falsefalsefalsetruefalse16truefalsetrue158158falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, With Redemption, 1 YearfalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.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:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 3 YearsfalseUSDfalsefalse$3falseColumnprimaryElement*5false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue708708falsefalsefalsetruefalse2truefalsetrue839839falsefalsefalsetruefalse3truefalsetrue839839falsefalsefalsetruefalse4truefalsetrue723723falsefalsefalsetruefalse5truefalsetrue855855falsefalsefalsetruefalse6truefalsetrue855855falsefalsefalsetruefalse7truefalsetrue713713falsefalsefalsetruefalse8truefalsetrue845845falsefalsefalsetruefalse9truefalsetrue477477falsefalsefalsetruefalse10truefalsetrue612612falsefalsefalsetruefalse11truefalsetrue612612falsefalsefalsetruefalse12truefalsetrue482482falsefalsefalsetruefalse13truefalsetrue617617falsefalsefalsetruefalse14truefalsetrue617617falsefalsefalsetruefalse15falsefalsetrue00falsefalsefalsetruefalse16truefalsetrue845845falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 5 YearsfalseUSDfalsefalse$4falseColumnprimaryElement*6false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue15561556falsefalsefalsetruefalse2truefalsetrue18341834falsefalsefalsetruefalse3truefalsetrue18341834falsefalsefalsetruefalse4truefalsetrue15901590falsefalsefalsetruefalse5truefalsetrue18671867falsefalsefalsetruefalse6truefalsetrue18671867falsefalsefalsetruefalse7truefalsetrue15681568falsefalsefalsetruefalse8truefalsetrue18451845falsefalsefalsetruefalse9truefalsetrue10611061falsefalsefalsetruefalse10truefalsetrue13521352falsefalsefalsetruefalse11truefalsetrue13521352falsefalsefalsetruefalse12truefalsetrue10731073falsefalsefalsetruefalse13truefalsetrue13631363falsefalsefalsetruefalse14truefalsetrue13631363falsefalsefalsetruefalse15falsefalsetrue00falsefalsefalsetruefalse16truefalsetrue18451845falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 10 YearsfalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000025531MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000076445MemberRowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. Fixed Income Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000025531Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000076445Memberrr_ProspectusShareClassAxisexplicitMemberSIMT U.S. Fixed Income FundSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Aiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue8989falsefalsefalsetruefalse2truefalsetrue278278falsefalsefalsetruefalse3truefalsetrue482482falsefalsefalsetruefalse4truefalsetrue10731073falsefalsefalsetruefalseOthernanafalsefalseSIMT U.S. Fixed Income Fund SIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class A41Expense Example (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000025531MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000076445MemberRowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExample.No authoritative reference available.falsefalseExpense Example, With Redemption [Table]335false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00PORTFOLIO TURNOVERfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover, Heading336false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 299% of the average value of its portfolio.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover337false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Investment StrategiesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Heading338false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Under normal circumstances, the U.S. Fixed Income Fund will invest at least 80% of its net assets in investment grade U.S. fixed income securities. The Fund will invest primarily in U.S. corporate and government fixed income securities, including mortgage-backed securities and asset-backed securities. The Fund uses a multi-manager approach, relying upon a number of sub-advisers with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation (SIMC), the Fund's adviser. Sub-advisers are selected for their expertise in managing various kinds of fixed income securities, and each sub-adviser makes investment decisions based on an analysis of yield trends, credit ratings, and other factors in accordance with its particular discipline. The Fund may also invest in futures contracts, forward contracts and swaps for speculative or hedging purposes. Futures contracts, forwards and swaps are used to synthetically obtain exposure to securities or baskets of securities and to manage the Fund's interest rate duration and yield curve exposure. These derivatives are also used to mitigate the Fund's overall level of risk and/or the Fund's risk to particular types of securities or market segments. Interest rate swaps are further used to manage the Fund's yield spread sensitivity. When the Fund seeks to take an active long or short position with respect to the likelihood of an event of default of a security or basket of securities, the Fund may use credit default swaps. The Fund may buy credit default swaps in an attempt to manage credit risk where the Fund has credit exposure to an issuer and the Fund may sell credit default swaps to more efficiently gain credit exposure to such security or basket of securities. While each sub-adviser chooses securities of different types and maturities, the Fund, in the aggregate, generally will have a dollar-weighted average duration that is consistent with that of the broad U.S. fixed income market as represented by the Barclays Capital U.S. Aggregate Bond Index. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security's price to changes in interest rates. For example, a 5 year duration means the fixed income security will decrease in value by 5% if interest rates rise 1% and increase in value by 5% if interest rates fall 1%. The dollar-weighted average duration of the Barclays Capital U.S. Aggregate Bond Index varies significantly over time, but as of December 31, 2010 it was 4.98 years. The Fund will invest primarily in investment grade securities (those rated AAA, AA, A and BBB-), as listed with S&amp;P or a similar ratings agency. However, the Fund may invest in non-rated securities or securities rated below investment grade (junk bonds or those rated BB+, B and CCC). The Fund may also invest in ETFs to gain exposure to a particular portion of the market while awaiting an opportunity to purchase securities directly.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Narrative339false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal RisksfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk, Heading340false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Asset-backed Securities Risk - Payment of principal and interest on asset-backed securities is dependent largely on the cash flows generated by the assets backing the securities and asset-backed securities may not have the benefit of any security interest in the related assets. Corporate Fixed Income Securities Risk - Corporate fixed income securities respond to economic developments, especially changes in interest rates, as well as perceptions of the creditworthiness and business prospects of individual issuers. Credit Risk - The risk that the issuer of a security, or the counterparty to a contract, will default or otherwise become unable to honor a financial obligation. Derivatives Risk - The Fund's use of futures, forwards, options and swaps is subject to market risk, leverage risk, correlation risk and liquidity risk. Leverage risk and liquidity risk are described below. Market risk is the risk that the market value of an investment may move up and down, sometimes rapidly and unpredictably. Correlation risk is the risk that changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index. The Fund's use of forwards and swap agreements is also subject to credit risk and valuation risk. Valuation risk is the risk that the derivative may be difficult to value and/or valued incorrectly. Credit risk is described above. Each of these risks could cause the Fund to lose more than the principal amount invested in a derivative instrument. Exchange-Traded Funds (ETFs) Risk - The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio securities. Fixed Income Market Risk - The prices of the Fund's fixed income securities respond to economic developments, particularly interest rate changes, as well as to perceptions about the creditworthiness of individual issuers, including governments and their agencies. In the case of foreign securities, price fluctuations will reflect international economic and political events, as well as changes in currency valuations relative to the U.S. dollar. Interest Rate Risk - The risk that the value of fixed income securities, including U.S. Government securities, will fall due to rising interest rates. Investment Style Risk - The risk that U.S. fixed income securities may underperform other segments of the fixed income markets or the fixed income markets as a whole. Leverage Risk - The use of leverage can amplify the effects of market volatility on the Fund's share price and may also cause the Fund to liquidate portfolio positions when it would not be advantageous to do so in order to satisfy its obligations. Liquidity Risk - The risk that certain securities may be difficult or impossible to sell at the time and the price that the Fund would like. The Fund may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance. Mortgage-backed Securities Risk - Mortgage-backed securities are affected by, among other things, interest rate changes and the possibility of prepayment of the underlying mortgage loans. Mortgage-backed securities are also subject to the risk that underlying borrowers will be unable to meet their obligations. Portfolio Turnover Risk - Due to its investment strategy, the Fund may buy and sell securities frequently. This may result in higher transaction costs and additional capital gains tax liabilities. U.S. Government Securities Risk - Although U.S. Government securities are considered to be among the safest investments, they are not guaranteed against price movements due to changing interest rates. Obligations issued by some U.S. Government agencies are backed by the U.S. Treasury, while others are backed solely by the ability of the agency to borrow from the U.S. Treasury or by the agency's own resources. Loss of money is a risk of investing in the Fund.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk, Narrative341false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Performance InformationfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table, Heading342false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The bar chart and the performance table below provide some indication of the risks of an investment in the Fund by comparing the Fund's performance with a broad measure of market performance. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance, Narrative343false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076445Member row primary compact * ~</div>falsefalseBarChart12.jpg<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076445Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/BarChartDatafalsefalse020050 - Schedule - Annual Total Returnstruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000025531MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000076445MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. Fixed Income Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000025531Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000076445Memberrr_ProspectusShareClassAxisexplicitMemberSIMT U.S. Fixed Income FundSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Aiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*12false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14880.1488falsefalsefalsetruefalse2truetruefalse0.14630.1463falsefalsefalsetruefalse3truetruefalse0.14880.1488falsefalsefalsetruefalse4truetruefalse0.07170.0717falsefalsefalsetruefalse5truetruefalse0.0710.071falsefalsefalsetruefalse6truetruefalse0.07170.0717falsefalsefalsetruefalse7truetruefalse0.15210.1521falsefalsefalsetruefalse8truetruefalse0.15210.1521falsefalsefalsetruefalse9truetruefalse0.11010.1101falsefalsefalsetruefalse10truetruefalse0.10880.1088falsefalsefalsetruefalse11truetruefalse0.11010.1101falsefalsefalsetruefalse12truetruefalse0.07520.0752falsefalsefalsetruefalse13truetruefalse0.07520.0752falsefalsefalsetruefalse14truetruefalse0.07520.0752falsefalsefalsetruefalse15truetruefalse0.24070.2407falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20100rr_AnnualReturn2010truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.07520.0752falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 201011Annual Total Returns UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000025531MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000076445MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to BarChartData.No authoritative reference available.falsefalseBar Chart [Table]344false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Best Quarter: 3.48% (06/30/10) Worst Quarter: -0.94% (12/31/10)</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart, Closing345false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalsePerformance Table, Heading346false0rr_PerformanceTableNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also shouldshow the returns of an appropriate broadbased securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____). For a Fund that provides annual total returns for only one calendar year or for a Fund that does not include the bar chart because it does not have annual returns for a full calendar year, modify, as appropriate, the narrative explanation required by paragraph (c)(2)(i) (e.g., by stating that the information gives some indication of the risks of an investment in the Fund by comparing the Fund's performance with a broad measure of market performance).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iv -Subsection b falsefalsePerformance Table, Narrative347false0rr_AverageAnnualReturnCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 5 -Subsection b falsefalseAverage Annual Returns, Caption348false0rr_PerformanceTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076445Member column rr_PerformanceMeasureAxis compact * row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076445Member column rr_PerformanceMeasureAxis compact * row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/PerformanceTableDatafalsefalse020060 - Schedule - Average Annual Total Returns {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_AverageAnnualReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse2falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse3falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse4falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse5falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse6falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse7falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse8falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse9falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse10falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse11falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse12falsetruefalse00Class A Return After Taxes on Distribution and Sale of Fund Sharesfalsefalsefalsetruefalse13falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse14falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse15falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse16falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse17falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse18falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse19falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse20falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse21falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse22falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse23falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse24falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse25falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse26falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse27falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse28falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse29falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse30falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse31falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse32falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse33falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse34falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse35falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse36falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse37falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse38falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse39falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse40falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse41falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse42falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse43falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse44falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse45falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse46falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse47falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse48falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse49falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse50falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse51falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse52falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse53falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse54falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse55falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse56falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse57falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse58falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse59falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse60falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse61falsetruefalse00Russell 2500 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse62falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse63falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund SharesfalsefalsefalsetruefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, LabelfalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition 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Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 4 -Subsection b falsefalseAverage Annual Returns, Inception DatefalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000025531MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000076445MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. Fixed Income Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000025531Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000076445Memberrr_ProspectusShareClassAxisexplicitMembertruefalseBefore Taxesrr_PerformanceMeasureAxisrr_PerformanceMeasureDomainrr_PerformanceMeasureAxisexplicitMemberSIMT U.S. Fixed Income FundSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income 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from July 31, 2009.44Average Annual Total Returns SIMT U.S. Fixed Income FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000025531MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000076445MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to PerformanceTableData.No authoritative reference available.falsefalsePerformance [Table]349false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturn1falsefalsefalse00SIMT U.S. Fixed Income Fund | SIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class ISIMT U.S. Fixed Income Fund | SIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Ifalsefalsefalsefalsefalse13falsefalseUSDtruefalse{dei_LegalEntityAxis} : SIMT U.S. Fixed Income Fund {rr_ProspectusShareClassAxis} : SIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class I 1/29/2010 - 2/4/2011 USD ($) $eol_0001104659-11-005144_STD_372_20110204_0_396770x-9996084_429423x-9996109http://www.sec.gov/CIK0000804239duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseck0000804239_S000025531Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000025531Memberdei_LegalEntityAxisexplicitMemberfalsefalseck0000804239_C000076447Memberrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000076447Memberrr_ProspectusShareClassAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0iso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseSIMT U.S. Fixed Income Fund | SIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class I351false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00U.S. FIXED INCOME FUNDfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return, Heading352false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment GoalfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment Objective, Heading353false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Current income consistent with the preservation of capital.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseinvestment Objective, Primary354false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and ExpensesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpense, Heading355false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This table describes the fees and expenses that you may pay if you buy and hold Fund shares.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseExpense, Narrative356false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00SHAREHOLDER FEES (fees paid directly from your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees, Caption357false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076447Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076447Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/ShareholderFeesDatafalsefalse020010 - Schedule - Shareholder Feestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000025531MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000076447MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. Fixed Income Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000025531Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000076447Memberrr_ProspectusShareClassAxisexplicitMemberSIMT U.S. Fixed Income FundSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Iiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_RedemptionFeeOverRedemptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truetruetrue0.00500.0050[2]falsefalsefalsetruefalse2truetruetrue0.00500.0050[2]falsefalsefalsetruefalse3truetruetrue0.00500.0050[1]falsefalsefalsetruefalse4truetruetrue0.00750.0075[2]falsefalsefalsetruefalse5truetruetrue0.00750.0075[2]falsefalsefalsetruefalse6truetruetrue0.00750.0075[2]falsefalsefalsetruefalse7truetruetrue0.00500.0050[2]falsefalsefalsetruefalse8truetruetrue0.00500.0050[2]falsefalsefalsetruefalse9truetruetrue0.00600.0060[3]falsefalsefalsetruefalse10truetruetrue0.00600.0060[4]falsefalsefalsetruefalse11truetruetrue0.00600.0060[3]falsefalsefalsetruefalse12truetruetrue0.00600.0060[3]falsefalsefalsetruefalse13truetruetrue0.00600.0060[4]falsefalsefalsetruefalse14truetruetrue0.00600.0060[3]falsefalsefalsetruefalse15truetruetrue0.00250.0025[2]falsefalsefalsetruefalse16truetruetrue0.01000.0100[2]falsefalsefalsetruefalseOtherrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph b -Subsection instructions falsefalseRedemption fee0rr_RedemptionFeeOverRedemptiontruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue0.00600.0060falsefalsefalsetruefalseOthernanafalsefalseRedemption fee1applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $50 million within any thirty (30) day period)11Shareholder Fees UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000025531MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000076447MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No authoritative reference available.falsefalseShareholder Fees [Table]358false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses, Caption359false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076447Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076447Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/OperatingExpensesDatafalsefalse020020 - Schedule - Annual Fund Operating Expensestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000025531MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000076447MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. Fixed Income Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000025531Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000076447Memberrr_ProspectusShareClassAxisexplicitMemberSIMT U.S. Fixed Income FundSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Iiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00650.0065falsefalsefalsetruefalse2truetruetrue0.00650.0065falsefalsefalsetruefalse3truetruetrue0.00650.0065falsefalsefalsetruefalse4truetruetrue0.00650.0065falsefalsefalsetruefalse5truetruetrue0.00650.0065falsefalsefalsetruefalse6truetruetrue0.00650.0065falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00280.0028falsefalsefalsetruefalse10truetruetrue0.00280.0028falsefalsefalsetruefalse11truetruetrue0.00280.0028falsefalsefalsetruefalse12truetruetrue0.00280.0028falsefalsefalsetruefalse13truetruetrue0.00280.0028falsefalsefalsetruefalse14truetruetrue0.00280.0028falsefalsefalsetruefalse15truetruetrue0.01500.0150falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement Fees0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00280.0028falsefalsefalsetruefalseOthernanafalsefalseManagement Fees2falseRowprimaryElement*4false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.000.00falsefalsefalsetruefalse2truetruetrue0.000.00falsefalsefalsetruefalse3truetruetrue0.00250.0025falsefalsefalsetruefalse4truetruetrue0.000.00falsefalsefalsetruefalse5truetruetrue0.000.00falsefalsefalsetruefalse6truetruetrue0.00250.0025falsefalsefalsetruefalse7truetruetrue0.000.00falsefalsefalsetruefalse8truetruetrue0.00250.0025falsefalsefalsetruefalse9truetruetrue0.000.00falsefalsefalsetruefalse10truetruetrue0.000.00falsefalsefalsetruefalse11truetruetrue0.00250.0025falsefalsefalsetruefalse12truetruetrue0.000.00falsefalsefalsetruefalse13truetruetrue0.000.00falsefalsefalsetruefalse14truetruetrue0.00250.0025falsefalsefalsetruefalse15truetruetrue0.000.00falsefalsefalsetruefalse16truetruetrue0.00250.0025falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution (12b-1) Fees0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.000.00falsefalsefalsetruefalseOthernanafalsefalseDistribution (12b-1) Fees3falseRowprimaryElement*5false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00640.0064falsefalsefalsetruefalse2truetruetrue0.00890.0089falsefalsefalsetruefalse3truetruetrue0.00640.0064falsefalsefalsetruefalse4truetruetrue0.00670.0067falsefalsefalsetruefalse5truetruetrue0.00920.0092falsefalsefalsetruefalse6truetruetrue0.00670.0067falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00580.0058falsefalsefalsetruefalse10truetruetrue0.00830.0083falsefalsefalsetruefalse11truetruetrue0.00580.0058falsefalsefalsetruefalse12truetruetrue0.00590.0059falsefalsefalsetruefalse13truetruetrue0.00840.0084falsefalsefalsetruefalse14truetruetrue0.00590.0059falsefalsefalsetruefalse15truetruetrue0.00690.0069[2]falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther Expenses0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00840.0084falsefalsefalsetruefalseOthernanafalsefalseOther Expenses4falseRowprimaryElement*7false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01290.0129falsefalsefalsetruefalse2truetruetrue0.01540.0154falsefalsefalsetruefalse3truetruetrue0.01540.0154falsefalsefalsetruefalse4truetruetrue0.01320.0132falsefalsefalsetruefalse5truetruetrue0.01570.0157falsefalsefalsetruefalse6truetruetrue0.01570.0157falsefalsefalsetruefalse7truetruetrue0.01300.0130falsefalsefalsetruefalse8truetruetrue0.01550.0155falsefalsefalsetruefalse9truetruetrue0.00860.0086falsefalsefalsetruefalse10truetruetrue0.01110.0111falsefalsefalsetruefalse11truetruetrue0.01110.0111falsefalsefalsetruefalse12truetruetrue0.00870.0087falsefalsefalsetruefalse13truetruetrue0.01120.0112falsefalsefalsetruefalse14truetruetrue0.01120.0112falsefalsefalsetruefalse15truetruetrue0.02930.0293falsefalsefalsetruefalse16truetruetrue0.01550.0155falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph d -Subsection instructions falsefalseTotal Annual Fund Operating Expenses0rr_ExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01120.0112falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses14Annual Fund Operating Expenses UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000025531MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000076447MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Table]360false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00EXAMPLEfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, Heading361false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and that you sell your shares at the end of each period. The Example also assumes that each year your investment has a 5% return, Fund operating expenses remain the same and you reinvest all dividends and distributions.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative362false0rr_ExpenseExampleByYearCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Although your actual costs and returns might be different, your approximate costs of investing $10,000 in the Fund would be:falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, By Year, Caption363false0rr_ExpenseExampleWithRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076447Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076447Member row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/ExpenseExamplefalsefalse020030 - Schedule - Expense Example {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue131131falsefalsefalsetruefalse2truefalsetrue157157falsefalsefalsetruefalse3truefalsetrue157157falsefalsefalsetruefalse4truefalsetrue134134falsefalsefalsetruefalse5truefalsetrue160160falsefalsefalsetruefalse6truefalsetrue160160falsefalsefalsetruefalse7truefalsetrue132132falsefalsefalsetruefalse8truefalsetrue158158falsefalsefalsetruefalse9truefalsetrue8888falsefalsefalsetruefalse10truefalsetrue113113falsefalsefalsetruefalse11truefalsetrue113113falsefalsefalsetruefalse12truefalsetrue8989falsefalsefalsetruefalse13truefalsetrue114114falsefalsefalsetruefalse14truefalsetrue114114falsefalsefalsetruefalse15truefalsetrue296296falsefalsefalsetruefalse16truefalsetrue158158falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, With Redemption, 1 YearfalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.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:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 3 YearsfalseUSDfalsefalse$3falseColumnprimaryElement*5false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue708708falsefalsefalsetruefalse2truefalsetrue839839falsefalsefalsetruefalse3truefalsetrue839839falsefalsefalsetruefalse4truefalsetrue723723falsefalsefalsetruefalse5truefalsetrue855855falsefalsefalsetruefalse6truefalsetrue855855falsefalsefalsetruefalse7truefalsetrue713713falsefalsefalsetruefalse8truefalsetrue845845falsefalsefalsetruefalse9truefalsetrue477477falsefalsefalsetruefalse10truefalsetrue612612falsefalsefalsetruefalse11truefalsetrue612612falsefalsefalsetruefalse12truefalsetrue482482falsefalsefalsetruefalse13truefalsetrue617617falsefalsefalsetruefalse14truefalsetrue617617falsefalsefalsetruefalse15falsefalsetrue00falsefalsefalsetruefalse16truefalsetrue845845falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 5 YearsfalseUSDfalsefalse$4falseColumnprimaryElement*6false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.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:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 10 YearsfalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000025531MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000076447MemberRowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. Fixed Income Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000025531Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000076447Memberrr_ProspectusShareClassAxisexplicitMemberSIMT U.S. Fixed Income FundSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Iiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue114114falsefalsefalsetruefalse2truefalsetrue356356falsefalsefalsetruefalse3truefalsetrue617617falsefalsefalsetruefalse4truefalsetrue13631363falsefalsefalsetruefalseOthernanafalsefalseSIMT U.S. Fixed Income Fund SIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class I41Expense Example (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000025531MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000076447MemberRowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExample.No authoritative reference available.falsefalseExpense Example, With Redemption [Table]364false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00PORTFOLIO TURNOVERfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover, Heading365false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 299% of the average value of its portfolio.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover366false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Investment StrategiesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Heading367false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Under normal circumstances, the U.S. Fixed Income Fund will invest at least 80% of its net assets in investment grade U.S. fixed income securities. The Fund will invest primarily in U.S. corporate and government fixed income securities, including mortgage-backed securities and asset-backed securities. The Fund uses a multi-manager approach, relying upon a number of sub-advisers with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation (SIMC), the Fund's adviser. Sub-advisers are selected for their expertise in managing various kinds of fixed income securities, and each sub-adviser makes investment decisions based on an analysis of yield trends, credit ratings, and other factors in accordance with its particular discipline. The Fund may also invest in futures contracts, forward contracts and swaps for speculative or hedging purposes. Futures contracts, forwards and swaps are used to synthetically obtain exposure to securities or baskets of securities and to manage the Fund's interest rate duration and yield curve exposure. These derivatives are also used to mitigate the Fund's overall level of risk and/or the Fund's risk to particular types of securities or market segments. Interest rate swaps are further used to manage the Fund's yield spread sensitivity. When the Fund seeks to take an active long or short position with respect to the likelihood of an event of default of a security or basket of securities, the Fund may use credit default swaps. The Fund may buy credit default swaps in an attempt to manage credit risk where the Fund has credit exposure to an issuer and the Fund may sell credit default swaps to more efficiently gain credit exposure to such security or basket of securities. While each sub-adviser chooses securities of different types and maturities, the Fund, in the aggregate, generally will have a dollar-weighted average duration that is consistent with that of the broad U.S. fixed income market as represented by the Barclays Capital U.S. Aggregate Bond Index. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security's price to changes in interest rates. For example, a 5 year duration means the fixed income security will decrease in value by 5% if interest rates rise 1% and increase in value by 5% if interest rates fall 1%. The dollar-weighted average duration of the Barclays Capital U.S. Aggregate Bond Index varies significantly over time, but as of December 31, 2010 it was 4.98 years. The Fund will invest primarily in investment grade securities (those rated AAA, AA, A and BBB-), as listed with S&amp;P or a similar ratings agency. However, the Fund may invest in non-rated securities or securities rated below investment grade (junk bonds or those rated BB+, B and CCC). The Fund may also invest in ETFs to gain exposure to a particular portion of the market while awaiting an opportunity to purchase securities directly.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Narrative368false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal RisksfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk, Heading369false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Asset-backed Securities Risk - Payment of principal and interest on asset-backed securities is dependent largely on the cash flows generated by the assets backing the securities and asset-backed securities may not have the benefit of any security interest in the related assets. Corporate Fixed Income Securities Risk - Corporate fixed income securities respond to economic developments, especially changes in interest rates, as well as perceptions of the creditworthiness and business prospects of individual issuers. Credit Risk - The risk that the issuer of a security, or the counterparty to a contract, will default or otherwise become unable to honor a financial obligation. Derivatives Risk - The Fund's use of futures, forwards, options and swaps is subject to market risk, leverage risk, correlation risk and liquidity risk. Leverage risk and liquidity risk are described below. Market risk is the risk that the market value of an investment may move up and down, sometimes rapidly and unpredictably. Correlation risk is the risk that changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index. The Fund's use of forwards and swap agreements is also subject to credit risk and valuation risk. Valuation risk is the risk that the derivative may be difficult to value and/or valued incorrectly. Credit risk is described above. Each of these risks could cause the Fund to lose more than the principal amount invested in a derivative instrument. Exchange-Traded Funds (ETFs) Risk - The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio securities. Fixed Income Market Risk - The prices of the Fund's fixed income securities respond to economic developments, particularly interest rate changes, as well as to perceptions about the creditworthiness of individual issuers, including governments and their agencies. In the case of foreign securities, price fluctuations will reflect international economic and political events, as well as changes in currency valuations relative to the U.S. dollar. Interest Rate Risk - The risk that the value of fixed income securities, including U.S. Government securities, will fall due to rising interest rates. Investment Style Risk - The risk that U.S. fixed income securities may underperform other segments of the fixed income markets or the fixed income markets as a whole. Leverage Risk - The use of leverage can amplify the effects of market volatility on the Fund's share price and may also cause the Fund to liquidate portfolio positions when it would not be advantageous to do so in order to satisfy its obligations. Liquidity Risk - The risk that certain securities may be difficult or impossible to sell at the time and the price that the Fund would like. The Fund may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance. Mortgage-backed Securities Risk - Mortgage-backed securities are affected by, among other things, interest rate changes and the possibility of prepayment of the underlying mortgage loans. Mortgage-backed securities are also subject to the risk that underlying borrowers will be unable to meet their obligations. Portfolio Turnover Risk - Due to its investment strategy, the Fund may buy and sell securities frequently. This may result in higher transaction costs and additional capital gains tax liabilities. U.S. Government Securities Risk -Although U.S. Government securities are considered to be among the safest investments, they are not guaranteed against price movements due to changing interest rates. Obligations issued by some U.S. Government agencies are backed by the U.S. Treasury, while others are backed solely by the ability of the agency to borrow from the U.S. Treasury or by the agency's own resources. Loss of money is a risk of investing in the Fund.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk, Narrative370false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Performance InformationfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table, Heading371false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>As of January 31, 2011, Class I Shares of the Fund had not commenced operations, and did not have a performance history. The bar chart and the performance table below provide some indication of the risks of an investment in the Fund by comparing the Fund's performance with a broad measure of market performance. Since Class I Shares are invested in the same portfolio of securities, return for Class I Shares will be substantially similar to those of Class A Shares, shown here, and will differ only to the extent that Class I Shares have higher expenses. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance, Narrative372false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076447Member row primary compact * ~</div>falsefalseBarChart13.jpg<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076447Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/BarChartDatafalsefalse020050 - Schedule - Annual Total Returnstruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000025531MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000076447MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. Fixed Income Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000025531Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000076447Memberrr_ProspectusShareClassAxisexplicitMemberSIMT U.S. Fixed Income FundSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Iiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*12false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14880.1488falsefalsefalsetruefalse2truetruefalse0.14630.1463falsefalsefalsetruefalse3truetruefalse0.14880.1488falsefalsefalsetruefalse4truetruefalse0.07170.0717falsefalsefalsetruefalse5truetruefalse0.0710.071falsefalsefalsetruefalse6truetruefalse0.07170.0717falsefalsefalsetruefalse7truetruefalse0.15210.1521falsefalsefalsetruefalse8truetruefalse0.15210.1521falsefalsefalsetruefalse9truetruefalse0.11010.1101falsefalsefalsetruefalse10truetruefalse0.10880.1088falsefalsefalsetruefalse11truetruefalse0.11010.1101falsefalsefalsetruefalse12truetruefalse0.07520.0752falsefalsefalsetruefalse13truetruefalse0.07520.0752falsefalsefalsetruefalse14truetruefalse0.07520.0752falsefalsefalsetruefalse15truetruefalse0.24070.2407falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20100rr_AnnualReturn2010truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.07520.0752falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 201011Annual Total Returns UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000025531MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000076447MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to BarChartData.No authoritative reference available.falsefalseBar Chart [Table]373false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Best Quarter: 3.48% (06/30/10) Worst Quarter: -0.94% (12/31/10)</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart, Closing374false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalsePerformance Table, Heading375false0rr_PerformanceTableNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also shouldshow the returns of an appropriate broadbased securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____). For a Fund that provides annual total returns for only one calendar year or for a Fund that does not include the bar chart because it does not have annual returns for a full calendar year, modify, as appropriate, the narrative explanation required by paragraph (c)(2)(i) (e.g., by stating that the information gives some indication of the risks of an investment in the Fund by comparing the Fund's performance with a broad measure of market performance).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iv -Subsection b falsefalsePerformance Table, Narrative376false0rr_AverageAnnualReturnCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 5 -Subsection b falsefalseAverage Annual Returns, Caption377false0rr_PerformanceTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076447Member column rr_PerformanceMeasureAxis compact * row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076447Member column rr_PerformanceMeasureAxis compact * row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/PerformanceTableDatafalsefalse020060 - Schedule - Average Annual Total Returns {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_AverageAnnualReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse2falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse3falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse4falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse5falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse6falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse7falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse8falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse9falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse10falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse11falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse12falsetruefalse00Class A Return After Taxes on Distribution and Sale of Fund Sharesfalsefalsefalsetruefalse13falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse14falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse15falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse16falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse17falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse18falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse19falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse20falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse21falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse22falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse23falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse24falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse25falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse26falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse27falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse28falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse29falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse30falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse31falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse32falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse33falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse34falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse35falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse36falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse37falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse38falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse39falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse40falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse41falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse42falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse43falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse44falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse45falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse46falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse47falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse48falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse49falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse50falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse51falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse52falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse53falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse54falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse55falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse56falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse57falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse58falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse59falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse60falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse61falsetruefalse00Russell 2500 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse62falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse63falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund SharesfalsefalsefalsetruefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, LabelfalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition 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available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse002004-10-28[7]falsefalsetruetruefalse2falsetruefalse002004-10-31falsefalsetruetruefalse3falsetruefalse002004-10-28[7]falsefalsetruetruefalse4falsetruefalse002004-10-28[7]falsefalsetruetruefalse5falsetruefalse002004-10-28[7]falsefalsetruetruefalse6falsetruefalse002004-10-31falsefalsetruetruefalse7falsetruefalse002004-10-28[7]falsefalsetruetruefalse8falsetruefalse002004-10-28[7]falsefalsetruetruefalse9falsetruefalse002004-10-28[7]falsefalsetruetruefalse10falsetruefalse002004-10-31falsefalsetruetruefalse11falsetruefalse002004-10-28[7]falsefalsetruetruefalse12falsetruefalse002004-10-28[7]falsefalsetruetruefalse13falsetruefalse002006-07-27[2]falsefalsetruetruefalse14falsetruefalse002006-07-31falsefalsetruetruefalse15falsetruefalse002006-07-31falsefalsetruetruefalse16falsetruefalse002006-07-27[2]falsefalsetruetruefalse17falsetruefalse002006-07-27[2]falsefalsetruetruefalse18falsetruefalse002006-07-27[2]falsefalsetruetruefalse19falsetruefalse002006-07-31falsefalsetruetruefalse20falsetruefalse002006-07-31falsefalsetruetruefalse21falsetruefalse002006-07-27[2]falsefalsetruetruefalse22falsetruefalse002006-07-27[2]falsefalsetruetruefalse23falsetruefalse002006-07-27[2]falsefalsetruetruefalse24falsetruefalse002006-07-31falsefalsetruetruefalse25falsetruefalse002006-07-31falsefalsetruetruefalse26falsetruefalse002006-07-27[2]falsefalsetruetruefalse27falsetruefalse002006-07-27[2]falsefalsetruetruefalse28falsetruefalse002007-12-20[1]falsefalsetruetruefalse29falsetruefalse002007-12-31falsefalsetruetruefalse30falsetruefalse002007-12-20[1]falsefalsetruetruefalse31falsetruefalse002007-12-20[1]falsefalsetruetruefalse32falsetruefalse002007-12-20[1]falsefalsetruetruefalse33falsetruefalse002007-12-31falsefalsetruetruefalse34falsetruefalse002007-12-20[1]falsefalsetruetruefalse35falsetruefalse002007-12-20[1]falsefalsetruetruefalse36falsetruefalse001987-05-01[4]falsefalsetruetruefalse37falsetruefalse001987-05-31falsefalsetruetruefalse38falsetruefalse001987-05-01[4]falsefalsetruetruefalse39falsetruefalse001987-05-01[4]falsefalsetruetruefalse40falsetruefalse001987-05-01[4]falsefalsetruetruefalse41falsetruefalse001987-05-31falsefalsetruetruefalse42falsetruefalse001987-05-01[4]falsefalsetruetruefalse43falsetruefalse001987-05-01[4]falsefalsetruetruefalse44falsetruefalse001987-05-01[5]falsefalsetruetruefalse45falsetruefalse00falsefalsetruetruefalse46falsetruefalse001987-05-01[5]falsefalsetruetruefalse47falsetruefalse001987-05-01[5]falsefalsetruetruefalse48falsetruefalse002009-07-02[3]falsefalsetruetruefalse49falsetruefalse002009-07-31falsefalsetruetruefalse50falsetruefalse002009-07-02[3]falsefalsetruetruefalse51falsetruefalse002009-07-02[3]falsefalsetruetruefalse52falsetruefalse002009-07-02[3]falsefalsetruetruefalse53falsetruefalse002009-07-31falsefalsetruetruefalse54falsetruefalse002009-07-02[3]falsefalsetruetruefalse55falsetruefalse002009-07-02[3]falsefalsetruetruefalse56falsetruefalse002009-07-02[3]falsefalsetruetruefalse57falsetruefalse002009-07-31falsefalsetruetruefalse58falsetruefalse002009-07-02[3]falsefalsetruetruefalse59falsetruefalse002009-07-02[3]falsefalsetruetruefalse60falsetruefalse002000-10-31[6]falsefalsetruetruefalse61falsetruefalse002000-10-31falsefalsetruetruefalse62falsetruefalse002000-10-31[6]falsefalsetruetruefalse63falsetruefalse002000-10-31[6]falsefalsetruetruefalseOtherxbrli:dateItemTypedateReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 4 -Subsection b falsefalseAverage Annual Returns, Inception DatefalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000025531MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000076447MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. Fixed Income Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000025531Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000076447Memberrr_ProspectusShareClassAxisexplicitMembertruefalseBefore Taxesrr_PerformanceMeasureAxisrr_PerformanceMeasureDomainrr_PerformanceMeasureAxisexplicitMemberSIMT U.S. Fixed Income FundSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class IBefore Taxesiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class I Return Before TaxesClass I Return Before Taxesfalsefalsefalsetruefalse2truetruetrue0.07520.0752falsefalsefalsetruefalse3truetruetrue0.07900.0790falsefalsefalsetruefalse4falsetruefalse002009-07-022009-07-02[1]falsefalsetruetruefalseOthernanafalsefalseSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class I2falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000025531MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000076447MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. Fixed Income Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000025531Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class 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Barclays Capital U.S. Aggregate Bond Index3falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000025531MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000076447MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. Fixed Income Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000025531Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000076447Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseAfter Taxes on Distributionsrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsMemberrr_PerformanceMeasureAxisexplicitMemberSIMT U.S. Fixed Income FundSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class IAfter Taxes on DistributionsStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class I Return After Taxes on DistributionsClass I Return After Taxes on Distributionsfalsefalsefalsetruefalse2truetruetrue0.05190.0519falsefalsefalsetruefalse3truetruetrue0.05820.0582falsefalsefalsetruefalse4falsetruefalse002009-07-022009-07-02[1]falsefalsetruetruefalseOthernanafalsefalseSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class I After Taxes on Distributions4falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000025531MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000076447MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. Fixed Income Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000025531Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Irr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000076447Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseAfter Taxes on Distributions and Salesrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsAndSalesMemberrr_PerformanceMeasureAxisexplicitMemberSIMT U.S. Fixed Income FundSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class IAfter Taxes on Distributions and SalesStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund SharesClass I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse2truetruetrue0.04970.0497falsefalsefalsetruefalse3truetruetrue0.05560.0556falsefalsefalsetruefalse4falsetruefalse002009-07-022009-07-02[1]falsefalsetruetruefalseOthernanafalsefalseSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class I After Taxes on Distributions and Sales1Index returns are shown from July 31, 2009.44Average Annual Total Returns SIMT U.S. Fixed Income FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000025531MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000076447MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to PerformanceTableData.No authoritative reference available.falsefalsePerformance [Table]378false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturn1falsefalsefalse00SIMT U.S. Fixed Income Fund | SIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class GSIMT U.S. Fixed Income Fund | SIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Gfalsefalsefalsefalsefalse14falsefalseUSDtruefalse{dei_LegalEntityAxis} : SIMT U.S. Fixed Income Fund {rr_ProspectusShareClassAxis} : SIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class G 1/29/2010 - 2/4/2011 USD ($) $eol_0001104659-11-005144_STD_372_20110204_0_396770x-9996084_429423x-9996110http://www.sec.gov/CIK0000804239duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseck0000804239_S000025531Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000025531Memberdei_LegalEntityAxisexplicitMemberfalsefalseck0000804239_C000076446Memberrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000076446Memberrr_ProspectusShareClassAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0iso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseSIMT U.S. Fixed Income Fund | SIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class G380false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00U.S. FIXED INCOME FUNDfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return, Heading381false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment GoalfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment Objective, Heading382false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Current income consistent with the preservation of capital.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseinvestment Objective, Primary383false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and ExpensesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpense, Heading384false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This table describes the fees and expenses that you may pay if you buy and hold Fund shares.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseExpense, Narrative385false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00SHAREHOLDER FEES (fees paid directly from your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees, Caption386false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076446Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076446Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/ShareholderFeesDatafalsefalse020010 - Schedule - Shareholder Feestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000025531MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000076446MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. Fixed Income Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000025531Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000076446Memberrr_ProspectusShareClassAxisexplicitMemberSIMT U.S. Fixed Income FundSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Giso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_RedemptionFeeOverRedemptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truetruetrue0.00500.0050[2]falsefalsefalsetruefalse2truetruetrue0.00500.0050[2]falsefalsefalsetruefalse3truetruetrue0.00500.0050[1]falsefalsefalsetruefalse4truetruetrue0.00750.0075[2]falsefalsefalsetruefalse5truetruetrue0.00750.0075[2]falsefalsefalsetruefalse6truetruetrue0.00750.0075[2]falsefalsefalsetruefalse7truetruetrue0.00500.0050[2]falsefalsefalsetruefalse8truetruetrue0.00500.0050[2]falsefalsefalsetruefalse9truetruetrue0.00600.0060[3]falsefalsefalsetruefalse10truetruetrue0.00600.0060[4]falsefalsefalsetruefalse11truetruetrue0.00600.0060[3]falsefalsefalsetruefalse12truetruetrue0.00600.0060[3]falsefalsefalsetruefalse13truetruetrue0.00600.0060[4]falsefalsefalsetruefalse14truetruetrue0.00600.0060[3]falsefalsefalsetruefalse15truetruetrue0.00250.0025[2]falsefalsefalsetruefalse16truetruetrue0.01000.0100[2]falsefalsefalsetruefalseOtherrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph b -Subsection instructions falsefalseRedemption fee0rr_RedemptionFeeOverRedemptiontruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue0.00600.0060falsefalsefalsetruefalseOthernanafalsefalseRedemption fee1(applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $50 million within any thirty (30) day period)11Shareholder Fees UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000025531MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000076446MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No authoritative reference available.falsefalseShareholder Fees [Table]387false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses, Caption388false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076446Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076446Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/OperatingExpensesDatafalsefalse020020 - Schedule - Annual Fund Operating Expensestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000025531MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000076446MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. Fixed Income Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000025531Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000076446Memberrr_ProspectusShareClassAxisexplicitMemberSIMT U.S. Fixed Income FundSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Giso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00650.0065falsefalsefalsetruefalse2truetruetrue0.00650.0065falsefalsefalsetruefalse3truetruetrue0.00650.0065falsefalsefalsetruefalse4truetruetrue0.00650.0065falsefalsefalsetruefalse5truetruetrue0.00650.0065falsefalsefalsetruefalse6truetruetrue0.00650.0065falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00280.0028falsefalsefalsetruefalse10truetruetrue0.00280.0028falsefalsefalsetruefalse11truetruetrue0.00280.0028falsefalsefalsetruefalse12truetruetrue0.00280.0028falsefalsefalsetruefalse13truetruetrue0.00280.0028falsefalsefalsetruefalse14truetruetrue0.00280.0028falsefalsefalsetruefalse15truetruetrue0.01500.0150falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement Fees0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00280.0028falsefalsefalsetruefalseOthernanafalsefalseManagement Fees2falseRowprimaryElement*4false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.000.00falsefalsefalsetruefalse2truetruetrue0.000.00falsefalsefalsetruefalse3truetruetrue0.00250.0025falsefalsefalsetruefalse4truetruetrue0.000.00falsefalsefalsetruefalse5truetruetrue0.000.00falsefalsefalsetruefalse6truetruetrue0.00250.0025falsefalsefalsetruefalse7truetruetrue0.000.00falsefalsefalsetruefalse8truetruetrue0.00250.0025falsefalsefalsetruefalse9truetruetrue0.000.00falsefalsefalsetruefalse10truetruetrue0.000.00falsefalsefalsetruefalse11truetruetrue0.00250.0025falsefalsefalsetruefalse12truetruetrue0.000.00falsefalsefalsetruefalse13truetruetrue0.000.00falsefalsefalsetruefalse14truetruetrue0.00250.0025falsefalsefalsetruefalse15truetruetrue0.000.00falsefalsefalsetruefalse16truetruetrue0.00250.0025falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution (12b-1) Fees0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsetruefalseOthernanafalsefalseDistribution (12b-1) Fees3falseRowprimaryElement*5false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00640.0064falsefalsefalsetruefalse2truetruetrue0.00890.0089falsefalsefalsetruefalse3truetruetrue0.00640.0064falsefalsefalsetruefalse4truetruetrue0.00670.0067falsefalsefalsetruefalse5truetruetrue0.00920.0092falsefalsefalsetruefalse6truetruetrue0.00670.0067falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00580.0058falsefalsefalsetruefalse10truetruetrue0.00830.0083falsefalsefalsetruefalse11truetruetrue0.00580.0058falsefalsefalsetruefalse12truetruetrue0.00590.0059falsefalsefalsetruefalse13truetruetrue0.00840.0084falsefalsefalsetruefalse14truetruetrue0.00590.0059falsefalsefalsetruefalse15truetruetrue0.00690.0069[2]falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther Expenses0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00590.0059falsefalsefalsetruefalseOthernanafalsefalseOther Expenses4falseRowprimaryElement*7false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01290.0129falsefalsefalsetruefalse2truetruetrue0.01540.0154falsefalsefalsetruefalse3truetruetrue0.01540.0154falsefalsefalsetruefalse4truetruetrue0.01320.0132falsefalsefalsetruefalse5truetruetrue0.01570.0157falsefalsefalsetruefalse6truetruetrue0.01570.0157falsefalsefalsetruefalse7truetruetrue0.01300.0130falsefalsefalsetruefalse8truetruetrue0.01550.0155falsefalsefalsetruefalse9truetruetrue0.00860.0086falsefalsefalsetruefalse10truetruetrue0.01110.0111falsefalsefalsetruefalse11truetruetrue0.01110.0111falsefalsefalsetruefalse12truetruetrue0.00870.0087falsefalsefalsetruefalse13truetruetrue0.01120.0112falsefalsefalsetruefalse14truetruetrue0.01120.0112falsefalsefalsetruefalse15truetruetrue0.02930.0293falsefalsefalsetruefalse16truetruetrue0.01550.0155falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph d -Subsection instructions falsefalseTotal Annual Fund Operating Expenses0rr_ExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01120.0112falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses14Annual Fund Operating Expenses UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000025531MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000076446MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Table]389false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00EXAMPLEfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, Heading390false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and that you sell your shares at the end of each period. The Example also assumes that each year your investment has a 5% return, Fund operating expenses remain the same and you reinvest all dividends and distributions.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative391false0rr_ExpenseExampleByYearCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Although your actual costs and returns might be different, your approximate costs of investing $10,000 in the Fund would be:falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, By Year, Caption392false0rr_ExpenseExampleWithRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076446Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076446Member row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/ExpenseExamplefalsefalse020030 - Schedule - Expense Example {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue131131falsefalsefalsetruefalse2truefalsetrue157157falsefalsefalsetruefalse3truefalsetrue157157falsefalsefalsetruefalse4truefalsetrue134134falsefalsefalsetruefalse5truefalsetrue160160falsefalsefalsetruefalse6truefalsetrue160160falsefalsefalsetruefalse7truefalsetrue132132falsefalsefalsetruefalse8truefalsetrue158158falsefalsefalsetruefalse9truefalsetrue8888falsefalsefalsetruefalse10truefalsetrue113113falsefalsefalsetruefalse11truefalsetrue113113falsefalsefalsetruefalse12truefalsetrue8989falsefalsefalsetruefalse13truefalsetrue114114falsefalsefalsetruefalse14truefalsetrue114114falsefalsefalsetruefalse15truefalsetrue296296falsefalsefalsetruefalse16truefalsetrue158158falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, With Redemption, 1 YearfalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.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:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 3 YearsfalseUSDfalsefalse$3falseColumnprimaryElement*5false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue708708falsefalsefalsetruefalse2truefalsetrue839839falsefalsefalsetruefalse3truefalsetrue839839falsefalsefalsetruefalse4truefalsetrue723723falsefalsefalsetruefalse5truefalsetrue855855falsefalsefalsetruefalse6truefalsetrue855855falsefalsefalsetruefalse7truefalsetrue713713falsefalsefalsetruefalse8truefalsetrue845845falsefalsefalsetruefalse9truefalsetrue477477falsefalsefalsetruefalse10truefalsetrue612612falsefalsefalsetruefalse11truefalsetrue612612falsefalsefalsetruefalse12truefalsetrue482482falsefalsefalsetruefalse13truefalsetrue617617falsefalsefalsetruefalse14truefalsetrue617617falsefalsefalsetruefalse15falsefalsetrue00falsefalsefalsetruefalse16truefalsetrue845845falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 5 YearsfalseUSDfalsefalse$4falseColumnprimaryElement*6false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.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:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 10 YearsfalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000025531MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000076446MemberRowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. Fixed Income Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000025531Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000076446Memberrr_ProspectusShareClassAxisexplicitMemberSIMT U.S. Fixed Income FundSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Giso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue114114falsefalsefalsetruefalse2truefalsetrue356356falsefalsefalsetruefalse3truefalsetrue617617falsefalsefalsetruefalse4truefalsetrue13631363falsefalsefalsetruefalseOthernanafalsefalseSIMT U.S. Fixed Income Fund SIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class G41Expense Example (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000025531MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000076446MemberRowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExample.No authoritative reference available.falsefalseExpense Example, With Redemption [Table]393false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00PORTFOLIO TURNOVERfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover, Heading394false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. The Fund's portfolio turnover rate was 299% of the average value of its portfolio.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover395false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Investment StrategiesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Heading396false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Under normal circumstances, the U.S. Fixed Income Fund will invest at least 80% of its net assets in investment grade U.S. fixed income securities. The Fund will invest primarily in U.S. corporate and government fixed income securities, including mortgage-backed securities and asset-backed securities. The Fund uses a multi-manager approach, relying upon a number of sub-advisers with differing investment philosophies to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation (SIMC), the Fund's adviser. Sub-advisers are selected for their expertise in managing various kinds of fixed income securities, and each sub-adviser makes investment decisions based on an analysis of yield trends, credit ratings, and other factors in accordance with its particular discipline. The Fund may also invest in futures contracts, forward contracts and swaps for speculative or hedging purposes. Futures contracts, forwards and swaps are used to synthetically obtain exposure to securities or baskets of securities and to manage the Fund's interest rate duration and yield curve exposure. These derivatives are also used to mitigate the Fund's overall level of risk and/or the Fund's risk to particular types of securities, currencies or market segments. Interest rate swaps are further used to manage the Fund's yield spread sensitivity. When the Fund seeks to take an active long or short position with respect to the likelihood of an event of default of a security or basket of securities, the Fund may use credit default swaps. The Fund may buy credit default swaps in an attempt to manage credit risk where the Fund has credit exposure to an issuer and the Fund may sell credit default swaps to more efficiently gain credit exposure to such security or basket of securities. While each sub-adviser chooses securities of different types and maturities, the Fund, in the aggregate, generally will have a dollar-weighted average duration that is consistent with that of the broad U.S. fixed income market as represented by the Barclays Capital U.S. Aggregate Bond Index. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security's price to changes in interest rates. For example, a 5 year duration means the fixed income security will decrease in value by 5% if interest rates rise 1% and increase in value by 5% if interest rates fall 1%. The dollar-weighted average duration of the Barclays Capital U.S. Aggregate Bond Index varies significantly over time, but as of December 31, 2010 it was 4.98 years. The Fund will invest primarily in investment grade securities (those rated AAA, AA, A and BBB-), as listed with S&amp;P or a similar ratings agency. However, the Fund may invest in non-rated securities or securities rated below investment grade (junk bonds or those rated BB+, B and CCC). The Fund may also invest in ETFs to gain exposure to a particular portion of the market while awaiting an opportunity to purchase securities directly.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Narrative397false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal RisksfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk, Heading398false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Asset-backed Securities Risk - Payment of principal and interest on asset-backed securities is dependent largely on the cash flows generated by the assets backing the securities and asset-backed securities may not have the benefit of any security interest in the related assets. Corporate Fixed Income Securities Risk - Corporate fixed income securities respond to economic developments, especially changes in interest rates, as well as perceptions of the creditworthiness and business prospects of individual issuers. Credit Risk - The risk that the issuer of a security, or the counterparty to a contract, will default or otherwise become unable to honor a financial obligation. Derivatives Risk - The Fund's use of futures, forwards, options and swaps is subject to market risk, leverage risk, correlation risk and liquidity risk. Leverage risk and liquidity risk are described below. Market risk is the risk that the market value of an investment may move up and down, sometimes rapidly and unpredictably. Correlation risk is the risk that changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index. The Fund's use of forwards and swap agreements is also subject to credit risk and valuation risk. Valuation risk is the risk that the derivative may be difficult to value and/or valued incorrectly. Credit risk is described above. Each of these risks could cause the Fund to lose more than the principal amount invested in a derivative instrument. Exchange-Traded Funds (ETFs) Risk - The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio securities. Fixed Income Market Risk - The prices of the Fund's fixed income securities respond to economic developments, particularly interest rate changes, as well as to perceptions about the creditworthiness of individual issuers, including governments and their agencies. In the case of foreign securities, price fluctuations will reflect international economic and political events, as well as changes in currency valuations relative to the U.S. dollar. Interest Rate Risk - The risk that the value of fixed income securities, including U.S. Government securities, will fall due to rising interest rates. Investment Style Risk - The risk that U.S. fixed income securities may underperform other segments of the fixed income markets or the fixed income markets as a whole. Leverage Risk - The use of leverage can amplify the effects of market volatility on the Fund's share price and may also cause the Fund to liquidate portfolio positions when it would not be advantageous to do so in order to satisfy its obligations. Liquidity Risk - The risk that certain securities may be difficult or impossible to sell at the time and the price that the Fund would like. The Fund may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance. Mortgage-backed Securities Risk - Mortgage-backed securities are affected by, among other things, interest rate changes and the possibility of prepayment of the underlying mortgage loans. Mortgage-backed securities are also subject to the risk that underlying borrowers will be unable to meet their obligations. Portfolio Turnover Risk - Due to its investment strategy, the Fund may buy and sell securities frequently. This may result in higher transaction costs and additional capital gains tax liabilities. U.S. Government Securities Risk - Although U.S. Government securities are considered to be among the safest investments, they are not guaranteed against price movements due to changing interest rates. Obligations issued by some U.S. Government agencies are backed by the U.S. Treasury, while others are backed solely by the ability of the agency to borrow from the U.S. Treasury or by the agency's own resources. Loss of money is a risk of investing in the Fund.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk, Narrative399false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Performance InformationfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table, Heading400false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>As of January 31, 2011, Class G Shares of the Fund had not commenced operations, and did not have a performance history. The bar chart and the performance table below provide some indication of the risks of an investment in the Fund by comparing the Fund's performance with a broad measure of market performance. Since Class G Shares are invested in the same portfolio of securities, return for Class G Shares will be substantially similar to those of Class A Shares, shown here, and will differ only to the extent that Class G Shares have higher expenses. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance, Narrative401false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076446Member row primary compact * ~</div>falsefalseBarChart14.jpg<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076446Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/BarChartDatafalsefalse020050 - Schedule - Annual Total Returnstruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000025531MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000076446MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. Fixed Income Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000025531Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000076446Memberrr_ProspectusShareClassAxisexplicitMemberSIMT U.S. Fixed Income FundSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Giso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*12false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14880.1488falsefalsefalsetruefalse2truetruefalse0.14630.1463falsefalsefalsetruefalse3truetruefalse0.14880.1488falsefalsefalsetruefalse4truetruefalse0.07170.0717falsefalsefalsetruefalse5truetruefalse0.0710.071falsefalsefalsetruefalse6truetruefalse0.07170.0717falsefalsefalsetruefalse7truetruefalse0.15210.1521falsefalsefalsetruefalse8truetruefalse0.15210.1521falsefalsefalsetruefalse9truetruefalse0.11010.1101falsefalsefalsetruefalse10truetruefalse0.10880.1088falsefalsefalsetruefalse11truetruefalse0.11010.1101falsefalsefalsetruefalse12truetruefalse0.07520.0752falsefalsefalsetruefalse13truetruefalse0.07520.0752falsefalsefalsetruefalse14truetruefalse0.07520.0752falsefalsefalsetruefalse15truetruefalse0.24070.2407falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20100rr_AnnualReturn2010truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.07520.0752falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 201011Annual Total Returns UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000025531MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000076446MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to BarChartData.No authoritative reference available.falsefalseBar Chart [Table]402false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Best Quarter: 3.48% (06/30/10) Worst Quarter: -0.94% (12/31/10)</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart, Closing403false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalsePerformance Table, Heading404false0rr_PerformanceTableNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also shouldshow the returns of an appropriate broadbased securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____). For a Fund that provides annual total returns for only one calendar year or for a Fund that does not include the bar chart because it does not have annual returns for a full calendar year, modify, as appropriate, the narrative explanation required by paragraph (c)(2)(i) (e.g., by stating that the information gives some indication of the risks of an investment in the Fund by comparing the Fund's performance with a broad measure of market performance).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iv -Subsection b falsefalsePerformance Table, Narrative405false0rr_AverageAnnualReturnCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 5 -Subsection b falsefalseAverage Annual Returns, Caption406false0rr_PerformanceTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076446Member column rr_PerformanceMeasureAxis compact * row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact ck0000804239_S000025531Member column rr_ProspectusShareClassAxis compact ck0000804239_C000076446Member column rr_PerformanceMeasureAxis compact * row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/PerformanceTableDatafalsefalse020060 - Schedule - Average Annual Total Returns {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_AverageAnnualReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse2falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse3falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse4falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse5falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse6falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse7falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse8falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse9falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse10falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse11falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse12falsetruefalse00Class A Return After Taxes on Distribution and Sale of Fund Sharesfalsefalsefalsetruefalse13falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse14falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse15falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse16falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse17falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse18falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse19falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse20falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse21falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse22falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse23falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse24falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse25falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse26falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse27falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse28falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse29falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse30falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse31falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse32falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse33falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse34falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse35falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse36falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse37falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse38falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse39falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse40falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse41falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse42falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse43falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse44falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse45falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse46falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse47falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse48falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse49falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse50falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse51falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse52falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse53falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse54falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse55falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse56falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse57falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse58falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse59falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse60falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse61falsetruefalse00Russell 2500 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse62falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse63falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund SharesfalsefalsefalsetruefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, LabelfalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition 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available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.04840.0484falsefalsefalsetruefalse2truetruetrue0.04560.0456falsefalsefalsetruefalse3truetruetrue0.04290.0429falsefalsefalsetruefalse4truetruetrue0.03980.0398falsefalsefalsetruefalse5truetruetrue0.04490.0449falsefalsefalsetruefalse6truetruetrue0.04560.0456falsefalsefalsetruefalse7truetruetrue0.03900.0390falsefalsefalsetruefalse8truetruetrue0.03620.0362falsefalsefalsetruefalse9truetruetrue0.04840.0484falsefalsefalsetruefalse10truetruetrue0.04560.0456falsefalsefalsetruefalse11truetruetrue0.04290.0429falsefalsefalsetruefalse12truetruetrue0.03980.0398falsefalsefalsetruefalse13truetruetrue-0.0243-0.0243falsefalsefalsetruefalse14truetruetrue0.00410.0041falsefalsefalsetruefalse15truetruetrue0.02580.0258falsefalsefalsetruefalse16truetruetrue-0.0273-0.0273falsefalsefalsetruefalse17truetruetrue-0.0215-0.0215falsefalsefalsetruefalse18truetruetrue-0.0272-0.0272falsefalsefalsetruefalse19truetruetrue0.00410.0041falsefalsefalsetruefalse20truetruetrue0.02580.0258falsefalsefalsetruefalse21truetruetrue-0.0304-0.0304falsefalsefalsetruefalse22truetruetrue-0.0242-0.0242falsefalsefalsetruefalse23truetruetrue-0.0243-0.0243falsefalsefalsetruefalse24truetruetrue0.00410.0041falsefalsefalsetruefalse25truetruetrue0.02580.0258falsefalsefalsetruefalse26truetruetrue-0.0273-0.0273falsefalsefalsetruefalse27truetruetrue-0.0215-0.0215falsefalsefalsetruefalse28truetruetrue0.00780.0078falsefalsefalsetruefalse29truetruetrue-0.0201-0.0201falsefalsefalsetruefalse30truetruetrue0.00470.0047falsefalsefalsetruefalse31truetruetrue0.00540.0054falsefalsefalsetruefalse32truetruetrue0.00780.0078falsefalsefalsetruefalse33truetruetrue-0.0201-0.0201falsefalsefalsetruefalse34truetruetrue0.00470.0047falsefalsefalsetruefalse35truetruetrue0.00540.0054falsefalsefalsetruefalse36truetruetrue0.06860.0686falsefalsefalsetruefalse37truetruetrue0.07350.0735falsefalsefalsetruefalse38truetruetrue0.04530.0453falsefalsefalsetruefalse39truetruetrue0.04490.0449falsefalsefalsetruefalse40truetruetrue0.06430.0643falsefalsefalsetruefalse41truetruetrue0.07350.0735falsefalsefalsetruefalse42truetruetrue0.04150.0415falsefalsefalsetruefalse43truetruetrue0.04130.0413falsefalsefalsetruefalse44truetruetrue0.06860.0686falsefalsefalsetruefalse45falsetruetrue00falsefalsefalsetruefalse46truetruetrue0.04530.0453falsefalsefalsetruefalse47truetruetrue0.04490.0449falsefalsefalsetruefalse48truetruetrue0.07900.0790falsefalsefalsetruefalse49truetruetrue0.06270.0627falsefalsefalsetruefalse50truetruetrue0.05820.0582falsefalsefalsetruefalse51truetruetrue0.05560.0556falsefalsefalsetruefalse52truetruetrue0.07900.0790falsefalsefalsetruefalse53truetruetrue0.06270.0627falsefalsefalsetruefalse54truetruetrue0.05820.0582falsefalsefalsetruefalse55truetruetrue0.05560.0556falsefalsefalsetruefalse56truetruetrue0.07900.0790falsefalsefalsetruefalse57truetruetrue0.06270.0627falsefalsefalsetruefalse58truetruetrue0.05820.0582falsefalsefalsetruefalse59truetruetrue0.05560.0556falsefalsefalsetruefalse60truetruetrue0.04830.0483falsefalsefalsetruefalse61truetruetrue0.06760.0676falsefalsefalsetruefalse62truetruetrue0.04370.0437falsefalsefalsetruefalse63truetruetrue0.04140.0414falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, Since InceptionfalseUSDfalsefalse$4falseColumnprimaryElement*8false0rr_AverageAnnualReturnInceptionDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse002004-10-28[7]falsefalsetruetruefalse2falsetruefalse002004-10-31falsefalsetruetruefalse3falsetruefalse002004-10-28[7]falsefalsetruetruefalse4falsetruefalse002004-10-28[7]falsefalsetruetruefalse5falsetruefalse002004-10-28[7]falsefalsetruetruefalse6falsetruefalse002004-10-31falsefalsetruetruefalse7falsetruefalse002004-10-28[7]falsefalsetruetruefalse8falsetruefalse002004-10-28[7]falsefalsetruetruefalse9falsetruefalse002004-10-28[7]falsefalsetruetruefalse10falsetruefalse002004-10-31falsefalsetruetruefalse11falsetruefalse002004-10-28[7]falsefalsetruetruefalse12falsetruefalse002004-10-28[7]falsefalsetruetruefalse13falsetruefalse002006-07-27[2]falsefalsetruetruefalse14falsetruefalse002006-07-31falsefalsetruetruefalse15falsetruefalse002006-07-31falsefalsetruetruefalse16falsetruefalse002006-07-27[2]falsefalsetruetruefalse17falsetruefalse002006-07-27[2]falsefalsetruetruefalse18falsetruefalse002006-07-27[2]falsefalsetruetruefalse19falsetruefalse002006-07-31falsefalsetruetruefalse20falsetruefalse002006-07-31falsefalsetruetruefalse21falsetruefalse002006-07-27[2]falsefalsetruetruefalse22falsetruefalse002006-07-27[2]falsefalsetruetruefalse23falsetruefalse002006-07-27[2]falsefalsetruetruefalse24falsetruefalse002006-07-31falsefalsetruetruefalse25falsetruefalse002006-07-31falsefalsetruetruefalse26falsetruefalse002006-07-27[2]falsefalsetruetruefalse27falsetruefalse002006-07-27[2]falsefalsetruetruefalse28falsetruefalse002007-12-20[1]falsefalsetruetruefalse29falsetruefalse002007-12-31falsefalsetruetruefalse30falsetruefalse002007-12-20[1]falsefalsetruetruefalse31falsetruefalse002007-12-20[1]falsefalsetruetruefalse32falsetruefalse002007-12-20[1]falsefalsetruetruefalse33falsetruefalse002007-12-31falsefalsetruetruefalse34falsetruefalse002007-12-20[1]falsefalsetruetruefalse35falsetruefalse002007-12-20[1]falsefalsetruetruefalse36falsetruefalse001987-05-01[4]falsefalsetruetruefalse37falsetruefalse001987-05-31falsefalsetruetruefalse38falsetruefalse001987-05-01[4]falsefalsetruetruefalse39falsetruefalse001987-05-01[4]falsefalsetruetruefalse40falsetruefalse001987-05-01[4]falsefalsetruetruefalse41falsetruefalse001987-05-31falsefalsetruetruefalse42falsetruefalse001987-05-01[4]falsefalsetruetruefalse43falsetruefalse001987-05-01[4]falsefalsetruetruefalse44falsetruefalse001987-05-01[5]falsefalsetruetruefalse45falsetruefalse00falsefalsetruetruefalse46falsetruefalse001987-05-01[5]falsefalsetruetruefalse47falsetruefalse001987-05-01[5]falsefalsetruetruefalse48falsetruefalse002009-07-02[3]falsefalsetruetruefalse49falsetruefalse002009-07-31falsefalsetruetruefalse50falsetruefalse002009-07-02[3]falsefalsetruetruefalse51falsetruefalse002009-07-02[3]falsefalsetruetruefalse52falsetruefalse002009-07-02[3]falsefalsetruetruefalse53falsetruefalse002009-07-31falsefalsetruetruefalse54falsetruefalse002009-07-02[3]falsefalsetruetruefalse55falsetruefalse002009-07-02[3]falsefalsetruetruefalse56falsetruefalse002009-07-02[3]falsefalsetruetruefalse57falsetruefalse002009-07-31falsefalsetruetruefalse58falsetruefalse002009-07-02[3]falsefalsetruetruefalse59falsetruefalse002009-07-02[3]falsefalsetruetruefalse60falsetruefalse002000-10-31[6]falsefalsetruetruefalse61falsetruefalse002000-10-31falsefalsetruetruefalse62falsetruefalse002000-10-31[6]falsefalsetruetruefalse63falsetruefalse002000-10-31[6]falsefalsetruetruefalseOtherxbrli:dateItemTypedateReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 4 -Subsection b falsefalseAverage Annual Returns, Inception DatefalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000025531MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000076446MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. Fixed Income Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000025531Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000076446Memberrr_ProspectusShareClassAxisexplicitMembertruefalseBefore Taxesrr_PerformanceMeasureAxisrr_PerformanceMeasureDomainrr_PerformanceMeasureAxisexplicitMemberSIMT U.S. Fixed Income FundSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class GBefore Taxesiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class A Return Before TaxesClass A Return Before Taxesfalsefalsefalsetruefalse2truetruetrue0.07520.0752falsefalsefalsetruefalse3truetruetrue0.07900.0790falsefalsefalsetruefalse4falsetruefalse002009-07-022009-07-02[1]falsefalsetruetruefalseOthernanafalsefalseSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class G2falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000025531MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000076446MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. Fixed Income Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000025531Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000076446Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseBarclays Capital U.S. Aggregate Bond Indexrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_RRINDEX00001Memberrr_PerformanceMeasureAxisexplicitMemberSIMT U.S. Fixed Income FundSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class GBarclays Capital U.S. Aggregate Bond IndexStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse2truetruetrue0.06540.0654falsefalsefalsetruefalse3truetruetrue0.06270.0627falsefalsefalsetruefalse4falsetruefalse002009-07-312009-07-31falsefalsetruetruefalseOthernanafalsefalseSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class G Barclays Capital U.S. Aggregate Bond Index3falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000025531MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000076446MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. Fixed Income Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000025531Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000076446Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseAfter Taxes on Distributionsrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsMemberrr_PerformanceMeasureAxisexplicitMemberSIMT U.S. Fixed Income FundSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class GAfter Taxes on DistributionsStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class A Return After Taxes on DistributionsClass A Return After Taxes on Distributionsfalsefalsefalsetruefalse2truetruetrue0.05190.0519falsefalsefalsetruefalse3truetruetrue0.05820.0582falsefalsefalsetruefalse4falsetruefalse002009-07-022009-07-02[1]falsefalsetruetruefalseOthernanafalsefalseSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class G After Taxes on Distributions4falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000025531MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000076446MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT U.S. Fixed Income Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000025531Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT U.S. Fixed Income Fund - SIMT U.S. Fixed Income Fund - Class 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from July 31, 2009.44Average Annual Total Returns SIMT U.S. Fixed Income FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000025531MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000076446MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to PerformanceTableData.No authoritative reference available.falsefalsePerformance [Table]407false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturn1falsefalsefalse00SIMT Multi-Strategy Alternative FundSIMT Multi-Strategy Alternative Fundfalsefalsefalsefalsefalse15falsefalsetruefalse{dei_LegalEntityAxis} : SIMT Multi-Strategy Alternative Fund 1/29/2010 - 2/4/2011 eol_0001104659-11-005144_STD_372_20110204_0_396770x-9995647http://www.sec.gov/CIK0000804239duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseck0000804239_S000028026Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000028026Memberdei_LegalEntityAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseSIMT Multi-Strategy Alternative Fund409false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00MULTI-STRATEGY ALTERNATIVE FUNDfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return, Heading410false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment GoalfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment Objective, Heading411false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The Fund allocates its assets among a variety of investment strategies to seek to generate an absolute return with reduced correlation to the stock and bond markets.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseinvestment Objective, Primary412false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and ExpensesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpense, Heading413false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This table describes the fees and expenses that you may pay if you buy and hold Fund shares.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseExpense, Narrative414false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00SHAREHOLDER FEES (fees paid directly from your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees, Caption415false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000028026Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000028026Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/ShareholderFeesDatafalsefalse020010 - Schedule - Shareholder Feestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000028026MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT Multi-Strategy Alternative Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000028026Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT Multi-Strategy Alternative Fund - Class Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000085250Memberrr_ProspectusShareClassAxisexplicitMemberSIMT Multi-Strategy Alternative FundSIMT Multi-Strategy Alternative Fund - Class Aiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_RedemptionFeeOverRedemptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truetruetrue0.00500.0050[2]falsefalsefalsetruefalse2truetruetrue0.00500.0050[2]falsefalsefalsetruefalse3truetruetrue0.00500.0050[1]falsefalsefalsetruefalse4truetruetrue0.00750.0075[2]falsefalsefalsetruefalse5truetruetrue0.00750.0075[2]falsefalsefalsetruefalse6truetruetrue0.00750.0075[2]falsefalsefalsetruefalse7truetruetrue0.00500.0050[2]falsefalsefalsetruefalse8truetruetrue0.00500.0050[2]falsefalsefalsetruefalse9truetruetrue0.00600.0060[3]falsefalsefalsetruefalse10truetruetrue0.00600.0060[4]falsefalsefalsetruefalse11truetruetrue0.00600.0060[3]falsefalsefalsetruefalse12truetruetrue0.00600.0060[3]falsefalsefalsetruefalse13truetruetrue0.00600.0060[4]falsefalsefalsetruefalse14truetruetrue0.00600.0060[3]falsefalsefalsetruefalse15truetruetrue0.00250.0025[2]falsefalsefalsetruefalse16truetruetrue0.01000.0100[2]falsefalsefalsetruefalseOtherrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph b -Subsection instructions falsefalseRedemption fee0rr_RedemptionFeeOverRedemptiontruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue0.00250.0025falsefalsefalsetruefalseOthernanafalsefalseRedemption fee1(applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $25 million within any thirty (30) day period)11Shareholder Fees UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000028026MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No authoritative reference available.falsefalseShareholder Fees [Table]416false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses, Caption417false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000028026Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000028026Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/OperatingExpensesDatafalsefalse020020 - Schedule - Annual Fund Operating Expensestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000028026MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT Multi-Strategy Alternative Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000028026Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT Multi-Strategy Alternative Fund - Class Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000085250Memberrr_ProspectusShareClassAxisexplicitMemberSIMT Multi-Strategy Alternative FundSIMT Multi-Strategy Alternative Fund - Class Aiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00650.0065falsefalsefalsetruefalse2truetruetrue0.00650.0065falsefalsefalsetruefalse3truetruetrue0.00650.0065falsefalsefalsetruefalse4truetruetrue0.00650.0065falsefalsefalsetruefalse5truetruetrue0.00650.0065falsefalsefalsetruefalse6truetruetrue0.00650.0065falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00280.0028falsefalsefalsetruefalse10truetruetrue0.00280.0028falsefalsefalsetruefalse11truetruetrue0.00280.0028falsefalsefalsetruefalse12truetruetrue0.00280.0028falsefalsefalsetruefalse13truetruetrue0.00280.0028falsefalsefalsetruefalse14truetruetrue0.00280.0028falsefalsefalsetruefalse15truetruetrue0.01500.0150falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement Fees0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01500.0150falsefalsefalsetruefalseOthernanafalsefalseManagement Fees2falseRowprimaryElement*4false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.000.00falsefalsefalsetruefalse2truetruetrue0.000.00falsefalsefalsetruefalse3truetruetrue0.00250.0025falsefalsefalsetruefalse4truetruetrue0.000.00falsefalsefalsetruefalse5truetruetrue0.000.00falsefalsefalsetruefalse6truetruetrue0.00250.0025falsefalsefalsetruefalse7truetruetrue0.000.00falsefalsefalsetruefalse8truetruetrue0.00250.0025falsefalsefalsetruefalse9truetruetrue0.000.00falsefalsefalsetruefalse10truetruetrue0.000.00falsefalsefalsetruefalse11truetruetrue0.00250.0025falsefalsefalsetruefalse12truetruetrue0.000.00falsefalsefalsetruefalse13truetruetrue0.000.00falsefalsefalsetruefalse14truetruetrue0.00250.0025falsefalsefalsetruefalse15truetruetrue0.000.00falsefalsefalsetruefalse16truetruetrue0.00250.0025falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution (12b-1) Fees0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.000.00falsefalsefalsetruefalseOthernanafalsefalseDistribution (12b-1) Fees3falseRowprimaryElement*5false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00640.0064falsefalsefalsetruefalse2truetruetrue0.00890.0089falsefalsefalsetruefalse3truetruetrue0.00640.0064falsefalsefalsetruefalse4truetruetrue0.00670.0067falsefalsefalsetruefalse5truetruetrue0.00920.0092falsefalsefalsetruefalse6truetruetrue0.00670.0067falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00580.0058falsefalsefalsetruefalse10truetruetrue0.00830.0083falsefalsefalsetruefalse11truetruetrue0.00580.0058falsefalsefalsetruefalse12truetruetrue0.00590.0059falsefalsefalsetruefalse13truetruetrue0.00840.0084falsefalsefalsetruefalse14truetruetrue0.00590.0059falsefalsefalsetruefalse15truetruetrue0.00690.0069[2]falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther Expenses0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue0.00690.0069falsefalsefalsetruefalseOthernanafalsefalseOther Expenses4falseRowprimaryElement*6false0rr_AcquiredFundFeesAndExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruetrue00falsefalsefalsetruefalse2falsetruetrue00falsefalsefalsetruefalse3falsetruetrue00falsefalsefalsetruefalse4falsetruetrue00falsefalsefalsetruefalse5falsetruetrue00falsefalsefalsetruefalse6falsetruetrue00falsefalsefalsetruefalse7falsetruetrue00falsefalsefalsetruefalse8falsetruetrue00falsefalsefalsetruefalse9falsetruetrue00falsefalsefalsetruefalse10falsetruetrue00falsefalsefalsetruefalse11falsetruetrue00falsefalsefalsetruefalse12falsetruetrue00falsefalsefalsetruefalse13falsetruetrue00falsefalsefalsetruefalse14falsetruetrue00falsefalsefalsetruefalse15truetruetrue0.00740.0074[1]falsefalsefalsetruefalse16falsetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseAcquired Funds Fees and Expenses (AFFE)0rr_AcquiredFundFeesAndExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[2]1truetruetrue0.00740.0074falsefalsefalsetruefalseOthernanafalsefalseAcquired Funds Fees and Expenses (AFFE)5falseRowprimaryElement*7false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01290.0129falsefalsefalsetruefalse2truetruetrue0.01540.0154falsefalsefalsetruefalse3truetruetrue0.01540.0154falsefalsefalsetruefalse4truetruetrue0.01320.0132falsefalsefalsetruefalse5truetruetrue0.01570.0157falsefalsefalsetruefalse6truetruetrue0.01570.0157falsefalsefalsetruefalse7truetruetrue0.01300.0130falsefalsefalsetruefalse8truetruetrue0.01550.0155falsefalsefalsetruefalse9truetruetrue0.00860.0086falsefalsefalsetruefalse10truetruetrue0.01110.0111falsefalsefalsetruefalse11truetruetrue0.01110.0111falsefalsefalsetruefalse12truetruetrue0.00870.0087falsefalsefalsetruefalse13truetruetrue0.01120.0112falsefalsefalsetruefalse14truetruetrue0.01120.0112falsefalsefalsetruefalse15truetruetrue0.02930.0293falsefalsefalsetruefalse16truetruetrue0.01550.0155falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph d -Subsection instructions falsefalseTotal Annual Fund Operating Expenses0rr_ExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.02930.0293falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses1Other expenses are based on estimated amounts for the current fiscal year.2Because the Fund is expected to incur AFFE during the current fiscal year, the operating expenses in this fee table will not correlate to the expense ratio in the Fund's financial statements (or the "Financial Highlights" section in the prospectus) because the financial statements include only the direct operating expenses incurred by the Fund, not the indirect costs of investing in underlying funds. AFFE is based on estimated amounts for the current fiscal year.15Annual Fund Operating Expenses UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000028026MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Table]418false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00EXAMPLEfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, Heading419false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and that you sell your shares at the end of each period. The Example also assumes that each year your investment has a 5% return, Fund operating expenses remain the same.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative420false0rr_ExpenseExampleByYearCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Although your actual costs and returns might be different, your approximate costs of investing $10,000 in the Fund would be:falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, By Year, Caption421false0rr_ExpenseExampleWithRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000028026Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000028026Member column rr_ProspectusShareClassAxis compact * row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/ExpenseExamplefalsefalse020030 - Schedule - Expense Example {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue131131falsefalsefalsetruefalse2truefalsetrue157157falsefalsefalsetruefalse3truefalsetrue157157falsefalsefalsetruefalse4truefalsetrue134134falsefalsefalsetruefalse5truefalsetrue160160falsefalsefalsetruefalse6truefalsetrue160160falsefalsefalsetruefalse7truefalsetrue132132falsefalsefalsetruefalse8truefalsetrue158158falsefalsefalsetruefalse9truefalsetrue8888falsefalsefalsetruefalse10truefalsetrue113113falsefalsefalsetruefalse11truefalsetrue113113falsefalsefalsetruefalse12truefalsetrue8989falsefalsefalsetruefalse13truefalsetrue114114falsefalsefalsetruefalse14truefalsetrue114114falsefalsefalsetruefalse15truefalsetrue296296falsefalsefalsetruefalse16truefalsetrue158158falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, With Redemption, 1 YearfalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.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:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 3 YearsfalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000028026MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT Multi-Strategy Alternative Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000028026Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT Multi-Strategy Alternative Fund - Class Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000085250Memberrr_ProspectusShareClassAxisexplicitMemberSIMT Multi-Strategy Alternative FundSIMT Multi-Strategy Alternative Fund - Class Aiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue296296falsefalsefalsetruefalse2truefalsetrue907907falsefalsefalsetruefalseOthernanafalsefalseSIMT Multi-Strategy Alternative Fund SIMT Multi-Strategy Alternative Fund - Class A21Expense Example (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000028026MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExample.No authoritative reference available.falsefalseExpense Example, With Redemption [Table]422false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00PORTFOLIO TURNOVERfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover, Heading423false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. From March 31, 2010 to September 30, 2010, the Fund's portfolio turnover rate was 49% of the average value of its portfolio.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover424false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Investment StrategiesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Heading425false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The Fund employs a strategy intended to generate an absolute (i.e., positive) return in various market cycles with reduced correlation to the stock and bond markets. The Fund allocates its assets among a variety of investment strategies through the use of (i) affiliated and unaffiliated funds, including open-end funds, closed-end funds and exchange traded funds (Underlying Funds) and/or (ii) one or more investment sub-advisers. The Underlying Funds or sub-advisers that are employed may apply any of a variety of investment strategies, which may include (i) directional or tactical strategies, such as long/short equity, long/short credit and global tactical asset allocation; (ii) event driven strategies, such as distressed securities, special situations and merger arbitrage; and (iii) arbitrage strategies, such as fixed income or interest rate arbitrage, convertible arbitrage, pairs trading and equity market neutral. The Fund will allocate its assets among Underlying Funds and/or sub-advisers based on SEI Investments Management Corporation's (SIMC) analysis of the investment strategy, historical performance and the potential for each strategy to perform independently of each other. By allocating its assets in this manner, the Fund will seek to reduce risk, lower volatility and achieve positive returns in various market cycles. Allocation of assets to any one Underlying Fund, sub-adviser or strategy will vary based on market conditions. By investing in an Underlying Fund, the Fund becomes a shareholder of that Underlying Fund. Underlying Funds and sub-advisers may invest in a broad range of asset classes, securities and other investments to achieve their designated investment strategies, which may include U.S., foreign and emerging markets securities, equity securities of all types and capitalization ranges, investment and non-investment grade fixed income securities of any duration or maturity issued by corporations or governments, commodities, currencies, derivatives, warrants, depositary receipts, exchange traded notes, equity options, futures, options on futures and swap agreements. In addition, the Fund may invest in cash, money market instruments and other short-term obligations to achieve its investment goal. If the Fund allocates assets to one or more sub-advisers, it will do so employing SIMC's "manager-of-managers" model, and such sub-advisers will manage portions of the Fund's portfolio under the general supervision of SIMC. As of the date of this prospectus, the Fund's assets have not been allocated to a sub-adviser(s). The Fund is intended to be only one component of an investor's broader investment program and is not designed to be a complete investment program. Investors who seek to add an alternative component to their overall investment program may wish to allocate a portion of their investment to the Fund.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Narrative426false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal RisksfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk, Heading427false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>While the Fund seeks to achieve an absolute return with reduced correlation to stock and bond markets, it may not achieve positive returns over short or long term periods. Investment strategies that have historically been non-correlated or have demonstrated low correlations to one another or to stock and bond markets may become correlated at certain times and, as a result, may cease to function as anticipated over either short or long term periods. The success of the Fund's investment strategy depends both on SIMC's selection of the Underlying Funds and sub-advisers and allocating assets to such Underlying Funds and sub-advisers. SIMC, an Underlying Fund or a sub-adviser may be incorrect in assessing market trends, the value or growth capability of particular securities or asset classes. In addition, the methodology by which SIMC allocates the Fund's assets to the Underlying Funds and sub-advisers may not achieve desired results and may cause the Fund to lose money or underperform other comparable mutual funds. The Fund, Underlying Funds and sub-advisers may apply any of a variety of investment strategies and may invest in a broad range of asset classes, securities and other investments to achieve their designated investment strategies. The principal risks of using such investment strategies and making investments in such asset classes, securities and other investments are set forth below. Because an Underlying Fund's use of an investment strategy or investment in an asset class, security or other investment is subject to the same or similar risks as the Fund's use of such strategy or investment in such asset class, security or other investment, the term "the Fund" in the paragraphs below collectively refers to both the Fund and each Underlying Fund. Arbitrage Strategies Risk - Arbitrage strategies involve engaging in transactions that attempt to exploit price differences of identical, related or similar securities on different markets or in different forms. The Fund may realize losses or reduced rate of return if underlying relationships among securities in which it takes investment positions change in an adverse manner or a transaction is unexpectedly terminated or delayed. Trading to seek short-term capital appreciation can be expected to cause the Fund's portfolio turnover rate to be substantially higher than that of the average equity-oriented investment company. Asset-Backed Securities Risk - Payment of principal and interest on asset-backed securities is dependent largely on the cash flows generated by the assets backing the securities and asset-backed securities may not have the benefit of any security interest in the related assets. Below Investment Grade Securities Risk - Fixed income securities rated below investment grade (junk bonds) involve greater risks of default or downgrade and are more volatile than investment grade securities. Commodity-linked Securities Risk - Investments in commodity-linked securities may be more volatile and less liquid than direct investments in the underlying commodities themselves. Commodity-related equity returns can also be affected by the issuer's financial structure or the performance of unrelated businesses. Corporate Fixed Income Securities Risk - Corporate fixed income securities respond to economic developments, especially changes in interest rates, as well as perceptions of the creditworthiness and business prospects of individual issuers. Credit Risk - The risk that the issuer of a security, or the counterparty to a contract, will default or otherwise become unable to honor a financial obligation. Currency Risk - Due to the Fund's active positions in currencies, it will be subject to the risk that currency exchange rates may fluctuate in response to, among other things, changes in interest rates, intervention (or failure to intervene) by U.S. or foreign governments, central banks or supranational entities, or by the imposition of currency controls or other political developments in the United States or abroad. Derivatives Risk - The Fund's use of futures, options, forwards and swaps is subject to market risk, leverage risk, correlation risk and liquidity risk. Leverage risk and liquidity risk are described below. Market risk is the risk that the market value of an investment may move up and down, sometimes rapidly and unpredictably. Correlation risk is the risk that changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index. The Fund's use of forwards and swap agreements is also subject to credit risk and valuation risk. Valuation risk is the risk that the derivative may be difficult to value and/or valued incorrectly. Credit risk is described above. Each of these risks could cause the Fund to lose more than the principal amount invested in a derivative instrument. Directional or Tactical Strategies Risk - Directional or tactical strategies usually use long and short positions which entail prediction on the direction into which the overall market is going to move. Directional or tactical strategies may utilize leverage and hedging. Risk of loss may be significant if the Fund's judgment is incorrect as to the direction, timing or extent of expected market moves. Distressed Securities Risk - Distressed securities frequently do not produce income while they are outstanding and may require the Fund to bear certain extraordinary expenses in order to protect and recover its investment. Distressed securities are at high risk for default. Equity Market Risk - The risk that stock prices will fall over short or extended periods of time. Event-Driven Strategies Risk - Event-driven strategies involve making evaluations and predictions about both the likelihood that a particular event in the life of a company will occur and the impact such an event will have on the value of the company's securities. The transaction in which such a company is involved may either be unsuccessful, take considerable time or may result in a distribution of cash or a new security, the value of which may be less than the purchase price of the company's security. If an anticipated transaction does not occur, the Fund may be required to sell its securities at a loss. Exchange-Traded Funds (ETFs) Risk - The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio securities. Exchange-Traded Notes (ETNs) - The value of an ETN is subject to the credit risk of the issuer. There may not be an active trading market available for some ETNs. Additionally, trading of ETNs may be halted or delisted by the listing exchange. Fixed Income Market Risk - The prices of the Fund's fixed income securities respond to economic developments, particularly interest rate changes, as well as to perceptions about the creditworthiness of individual issuers, including governments and their agencies. In the case of foreign securities, price fluctuations will reflect international economic and political events, as well as changes in currency valuations relative to the U.S. dollar. Foreign Investment/Emerging Markets Risk - The risk that non-U.S. securities may be subject to additional risks due to, among other things, political, social and economic developments abroad, currency movements, and different legal, regulatory and tax environments. These additional risks may be heightened with respect to emerging market countries since political turmoil and rapid changes in economic conditions are more likely to occur in these countries. Investment Company Risk - When the Fund invests in an investment company, in addition to directly bearing the expenses associated with its own operations, it will bear a pro rata portion of the investment company's expenses. In addition, while the risks of owning shares of an investment company generally reflect the risks of owning the underlying investments of the investment company, the Fund may be subject to additional or different risks than if the Fund had invested directly in the underlying investments. Leverage Risk - The use of leverage can amplify the effects of market volatility on the Fund's share price and may also cause the Fund to liquidate portfolio positions when it would not be advantageous to do so in order to satisfy its obligations. Liquidity Risk - The risk that certain securities may be difficult or impossible to sell at the time and the price that the Fund would like. The Fund may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance. Mortgage-Backed Securities Risk - Mortgage-backed securities are affected by, among other things, interest rate changes and the possibility of prepayment of the underlying mortgage loans. Mortgage-backed securities are also subject to the risk that underlying borrowers will be unable to meet their obligations. Non-Diversified Risk - The Fund is non-diversified, which means that it may invest in the securities of relatively few issuers. As a result, the Fund may be more susceptible to a single adverse economic or political occurrence affecting one or more of these issuers, and may experience increased volatility due to its investments in those securities. Portfolio Turnover Risk - Due to their investment strategies, the Fund and the Underlying Funds may buy and sell securities frequently. This may result in higher transaction costs and additional capital gains tax liabilities. Short Sales - Short sales expose the Fund to the risk that it will be required to buy the security sold short (also known as "covering" the short position) at a time when the security has appreciated in value, thus resulting in a loss to the Fund. Reinvesting proceeds received from short selling may create leverage which can amplify the effects of market volatility on the Fund's share price. Small Capitalization Risk - Smaller capitalization companies may be more vulnerable to adverse business or economic events than larger, more established companies. In particular, small companies may have limited product lines, markets and financial resources, and may depend upon a relatively small management group. Therefore, small cap stocks may be more volatile than those of larger companies. Small cap stocks may be traded over the counter or listed on an exchange. U.S. Government Securities Risk - Although U.S. Government securities are considered to be among the safest investments, they are not guaranteed against price movements due to changing interest rates. Obligations issued by some U.S. Government agencies are backed by the U.S. Treasury, while others are backed solely by the ability of the agency to borrow from the U.S. Treasury or by the agency's own resources. Loss of money is a risk of investing in the Fund.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk, Narrative428false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Performance InformationfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table, Heading429false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The Fund commenced operations on March 31, 2010. Because the Fund did not have a full calendar year of performance as of December 31, 2010, performance results have not been provided.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance, Narrative430false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturn1falsefalsefalse00SIMT TAX-MANAGED SMALL CAP FUND | SIMT TAX-MANAGED SMALL CAP FUND - Class GSIMT TAX-MANAGED SMALL CAP FUND | SIMT TAX-MANAGED SMALL CAP FUND - Class Gfalsefalsefalsefalsefalse16falsefalseUSDtruefalse{dei_LegalEntityAxis} : SIMT TAX-MANAGED SMALL CAP FUND {rr_ProspectusShareClassAxis} : SIMT TAX-MANAGED SMALL CAP FUND - Class G 1/29/2010 - 2/4/2011 USD ($) $eol_0001104659-11-005144_STD_372_20110204_0_396770x-9996092_429423x-9996116http://www.sec.gov/CIK0000804239duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseck0000804239_S000006677Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006677Memberdei_LegalEntityAxisexplicitMemberfalsefalseck0000804239_C000073424Memberrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073424Memberrr_ProspectusShareClassAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0iso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseSIMT TAX-MANAGED SMALL CAP FUND | SIMT TAX-MANAGED SMALL CAP FUND - Class G432false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00TAX-MANAGED SMALL CAP FUNDfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return, Heading433false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment GoalfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment Objective, Heading434false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>High long-term after-tax returns.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseinvestment Objective, Primary435false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and ExpensesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpense, Heading436false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This table describes the fees and expenses that you may pay if you buy and hold Fund shares.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseExpense, Narrative437false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00SHAREHOLDER FEES (fees paid directly from your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees, Caption438false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000006677Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073424Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ShareholderFeesData column dei_LegalEntityAxis compact ck0000804239_S000006677Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073424Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/ShareholderFeesDatafalsefalse020010 - Schedule - Shareholder Feestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006677MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073424MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT TAX-MANAGED SMALL CAP FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006677Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT TAX-MANAGED SMALL CAP FUND - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073424Memberrr_ProspectusShareClassAxisexplicitMemberSIMT TAX-MANAGED SMALL CAP FUNDSIMT TAX-MANAGED SMALL CAP FUND - Class Giso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_RedemptionFeeOverRedemptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truetruetrue0.00500.0050[2]falsefalsefalsetruefalse2truetruetrue0.00500.0050[2]falsefalsefalsetruefalse3truetruetrue0.00500.0050[1]falsefalsefalsetruefalse4truetruetrue0.00750.0075[2]falsefalsefalsetruefalse5truetruetrue0.00750.0075[2]falsefalsefalsetruefalse6truetruetrue0.00750.0075[2]falsefalsefalsetruefalse7truetruetrue0.00500.0050[2]falsefalsefalsetruefalse8truetruetrue0.00500.0050[2]falsefalsefalsetruefalse9truetruetrue0.00600.0060[3]falsefalsefalsetruefalse10truetruetrue0.00600.0060[4]falsefalsefalsetruefalse11truetruetrue0.00600.0060[3]falsefalsefalsetruefalse12truetruetrue0.00600.0060[3]falsefalsefalsetruefalse13truetruetrue0.00600.0060[4]falsefalsefalsetruefalse14truetruetrue0.00600.0060[3]falsefalsefalsetruefalse15truetruetrue0.00250.0025[2]falsefalsefalsetruefalse16truetruetrue0.01000.0100[2]falsefalsefalsetruefalseOtherrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph b -Subsection instructions falsefalseRedemption fee0rr_RedemptionFeeOverRedemptiontruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse[1]1truetruetrue0.01000.0100falsefalsefalsetruefalseOthernanafalsefalseRedemption fee1(applies to a redemption, or series of redemptions, from a single identifiable source that, in the aggregate, exceeds $25 million within any thirty (30) day period)11Shareholder Fees UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006677MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073424MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No authoritative reference available.falsefalseShareholder Fees [Table]439false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses, Caption440false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000006677Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073424Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/OperatingExpensesData column dei_LegalEntityAxis compact ck0000804239_S000006677Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073424Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/OperatingExpensesDatafalsefalse020020 - Schedule - Annual Fund Operating Expensestruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006677MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073424MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT TAX-MANAGED SMALL CAP FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006677Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT TAX-MANAGED SMALL CAP FUND - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073424Memberrr_ProspectusShareClassAxisexplicitMemberSIMT TAX-MANAGED SMALL CAP FUNDSIMT TAX-MANAGED SMALL CAP FUND - Class Giso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00650.0065falsefalsefalsetruefalse2truetruetrue0.00650.0065falsefalsefalsetruefalse3truetruetrue0.00650.0065falsefalsefalsetruefalse4truetruetrue0.00650.0065falsefalsefalsetruefalse5truetruetrue0.00650.0065falsefalsefalsetruefalse6truetruetrue0.00650.0065falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00280.0028falsefalsefalsetruefalse10truetruetrue0.00280.0028falsefalsefalsetruefalse11truetruetrue0.00280.0028falsefalsefalsetruefalse12truetruetrue0.00280.0028falsefalsefalsetruefalse13truetruetrue0.00280.0028falsefalsefalsetruefalse14truetruetrue0.00280.0028falsefalsefalsetruefalse15truetruetrue0.01500.0150falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement Fees0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00650.0065falsefalsefalsetruefalseOthernanafalsefalseManagement Fees2falseRowprimaryElement*4false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.000.00falsefalsefalsetruefalse2truetruetrue0.000.00falsefalsefalsetruefalse3truetruetrue0.00250.0025falsefalsefalsetruefalse4truetruetrue0.000.00falsefalsefalsetruefalse5truetruetrue0.000.00falsefalsefalsetruefalse6truetruetrue0.00250.0025falsefalsefalsetruefalse7truetruetrue0.000.00falsefalsefalsetruefalse8truetruetrue0.00250.0025falsefalsefalsetruefalse9truetruetrue0.000.00falsefalsefalsetruefalse10truetruetrue0.000.00falsefalsefalsetruefalse11truetruetrue0.00250.0025falsefalsefalsetruefalse12truetruetrue0.000.00falsefalsefalsetruefalse13truetruetrue0.000.00falsefalsefalsetruefalse14truetruetrue0.00250.0025falsefalsefalsetruefalse15truetruetrue0.000.00falsefalsefalsetruefalse16truetruetrue0.00250.0025falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution (12b-1) Fees0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsetruefalseOthernanafalsefalseDistribution (12b-1) Fees3falseRowprimaryElement*5false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00640.0064falsefalsefalsetruefalse2truetruetrue0.00890.0089falsefalsefalsetruefalse3truetruetrue0.00640.0064falsefalsefalsetruefalse4truetruetrue0.00670.0067falsefalsefalsetruefalse5truetruetrue0.00920.0092falsefalsefalsetruefalse6truetruetrue0.00670.0067falsefalsefalsetruefalse7truetruetrue0.00650.0065falsefalsefalsetruefalse8truetruetrue0.00650.0065falsefalsefalsetruefalse9truetruetrue0.00580.0058falsefalsefalsetruefalse10truetruetrue0.00830.0083falsefalsefalsetruefalse11truetruetrue0.00580.0058falsefalsefalsetruefalse12truetruetrue0.00590.0059falsefalsefalsetruefalse13truetruetrue0.00840.0084falsefalsefalsetruefalse14truetruetrue0.00590.0059falsefalsefalsetruefalse15truetruetrue0.00690.0069[2]falsefalsefalsetruefalse16truetruetrue0.00650.0065falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther Expenses0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00650.0065falsefalsefalsetruefalseOthernanafalsefalseOther Expenses4falseRowprimaryElement*7false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01290.0129falsefalsefalsetruefalse2truetruetrue0.01540.0154falsefalsefalsetruefalse3truetruetrue0.01540.0154falsefalsefalsetruefalse4truetruetrue0.01320.0132falsefalsefalsetruefalse5truetruetrue0.01570.0157falsefalsefalsetruefalse6truetruetrue0.01570.0157falsefalsefalsetruefalse7truetruetrue0.01300.0130falsefalsefalsetruefalse8truetruetrue0.01550.0155falsefalsefalsetruefalse9truetruetrue0.00860.0086falsefalsefalsetruefalse10truetruetrue0.01110.0111falsefalsefalsetruefalse11truetruetrue0.01110.0111falsefalsefalsetruefalse12truetruetrue0.00870.0087falsefalsefalsetruefalse13truetruetrue0.01120.0112falsefalsefalsetruefalse14truetruetrue0.01120.0112falsefalsefalsetruefalse15truetruetrue0.02930.0293falsefalsefalsetruefalse16truetruetrue0.01550.0155falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph d -Subsection instructions falsefalseTotal Annual Fund Operating Expenses0rr_ExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01550.0155falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses14Annual Fund Operating Expenses UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006677MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073424MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Table]441false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00EXAMPLEfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, Heading442false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and that you sell your shares at the end of each period. The Example also assumes that each year your investment has a 5% return, Fund operating expenses remain the same and you reinvest all dividends and distributions.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative443false0rr_ExpenseExampleByYearCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Although your actual costs and returns might be different, your approximate costs of investing $10,000 in the Fund would be:falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, By Year, Caption444false0rr_ExpenseExampleWithRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000006677Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073424Member row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/ExpenseExample column dei_LegalEntityAxis compact ck0000804239_S000006677Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073424Member row primary compact * ~</div>truehttp://xbrl.sec.gov/rr/role/ExpenseExamplefalsefalse020030 - Schedule - Expense Example {Transposed}truefalsefalse1falseColumnprimaryElement*3false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue131131falsefalsefalsetruefalse2truefalsetrue157157falsefalsefalsetruefalse3truefalsetrue157157falsefalsefalsetruefalse4truefalsetrue134134falsefalsefalsetruefalse5truefalsetrue160160falsefalsefalsetruefalse6truefalsetrue160160falsefalsefalsetruefalse7truefalsetrue132132falsefalsefalsetruefalse8truefalsetrue158158falsefalsefalsetruefalse9truefalsetrue8888falsefalsefalsetruefalse10truefalsetrue113113falsefalsefalsetruefalse11truefalsetrue113113falsefalsefalsetruefalse12truefalsetrue8989falsefalsefalsetruefalse13truefalsetrue114114falsefalsefalsetruefalse14truefalsetrue114114falsefalsefalsetruefalse15truefalsetrue296296falsefalsefalsetruefalse16truefalsetrue158158falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, With Redemption, 1 YearfalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.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:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 3 YearsfalseUSDfalsefalse$3falseColumnprimaryElement*5false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue708708falsefalsefalsetruefalse2truefalsetrue839839falsefalsefalsetruefalse3truefalsetrue839839falsefalsefalsetruefalse4truefalsetrue723723falsefalsefalsetruefalse5truefalsetrue855855falsefalsefalsetruefalse6truefalsetrue855855falsefalsefalsetruefalse7truefalsetrue713713falsefalsefalsetruefalse8truefalsetrue845845falsefalsefalsetruefalse9truefalsetrue477477falsefalsefalsetruefalse10truefalsetrue612612falsefalsefalsetruefalse11truefalsetrue612612falsefalsefalsetruefalse12truefalsetrue482482falsefalsefalsetruefalse13truefalsetrue617617falsefalsefalsetruefalse14truefalsetrue617617falsefalsefalsetruefalse15falsefalsetrue00falsefalsefalsetruefalse16truefalsetrue845845falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 5 YearsfalseUSDfalsefalse$4falseColumnprimaryElement*6false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.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:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, With Redemption, 10 YearsfalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006677MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000073424MemberRowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT TAX-MANAGED SMALL CAP FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006677Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT TAX-MANAGED SMALL CAP FUND - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073424Memberrr_ProspectusShareClassAxisexplicitMemberSIMT TAX-MANAGED SMALL CAP FUNDSIMT TAX-MANAGED SMALL CAP FUND - Class Giso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue158158falsefalsefalsetruefalse2truefalsetrue490490falsefalsefalsetruefalse3truefalsetrue845845falsefalsefalsetruefalse4truefalsetrue18451845falsefalsefalsetruefalseOthernanafalsefalseSIMT TAX-MANAGED SMALL CAP FUND SIMT TAX-MANAGED SMALL CAP FUND - Class G41Expense Example (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006677MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000073424MemberRowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExample.No authoritative reference available.falsefalseExpense Example, With Redemption [Table]445false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00PORTFOLIO TURNOVERfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover, Heading446false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 75% of the average value of its portfolio.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover447false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Investment StrategiesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Heading448false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Under normal circumstances, the Tax-Managed Small Cap Fund will invest at least 80% of its net assets in equity securities of small companies, including ETFs. The Fund will invest primarily in common stocks of U.S. companies with market capitalizations in the range of companies in the Russell 2500 Index (between approximately $9.80 million and $9.60 billion as of December 31, 2010). The market capitalization range and the composition of the Russell 2500 Index are subject to change. The Fund's investments in equity securities may include common and preferred stocks and, to a lesser extent, REITs and securities of large capitalization companies. The Fund uses a multi-manager approach, relying upon a number of sub-advisers to manage portions of the Fund's portfolio under the general supervision of SEI Investments Management Corporation (SIMC), the Fund's adviser. Each sub-adviser, in managing its portion of the Fund's assets, generally applies either a growth-oriented, a value-oriented or a blended approach to selecting investments. Growth-oriented managers generally select stocks they believe have attractive growth and appreciation potential in light of such characteristics as revenue and earnings growth, expectations from sell side analysts and relative valuation, while value-oriented managers generally select stocks they believe are attractively valued in light of fundamental characteristics such as earnings, capital structure and/or return on invested capital. Generally, the sub-advisers will look to manage the impact of taxes by controlling portfolio turnover levels, selling stocks with the highest tax cost first and opportunistically harvesting losses to offset gains where possible.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseInvestment Strategy, Narrative449false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal RisksfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk, Heading450false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Equity Market Risk - The risk that stock prices will fall over short or extended periods of time. Exchange-Traded Funds (ETFs) Risk - The risks of owning shares of an ETF generally reflect the risks of owning the underlying securities the ETF is designed to track, although lack of liquidity in an ETF could result in its value being more volatile than the underlying portfolio securities. Investment Style Risk - The risk that small capitalization securities may underperform other segments of the equity markets or the equity markets as a whole. Liquidity Risk - The risk that certain securities may be difficult or impossible to sell at the time and the price that the Fund would like. The Fund may have to lower the price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on Fund management or performance. REITs - REITs are trusts that invest primarily in commercial real estate or real estate-related loans. The Fund's investments in REITs will be subject to the risks associated with the direct ownership of real estate. Risks commonly associated with the direct ownership of real estate include fluctuations in the value of underlying properties, defaults by borrowers or tenants, changes in interest rates and risks related to general or local economic conditions. Some REITs may have limited diversification and may be subject to risks inherent in financing a limited number of properties. Small Capitalization Risk - Smaller capitalization companies may be more vulnerable to adverse business or economic events than larger, more established companies. In particular, small companies may have limited product lines, markets and financial resources, and may depend upon a relatively small management group. Therefore, small cap stocks may be more volatile than those of larger companies. Small cap stocks may be traded over the counter or listed on an exchange. Taxation Risk - The Fund is managed to minimize tax consequences to investors, but will likely earn taxable income and gains from time to time. Loss of money is a risk of investing in the Fund.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk, Narrative451false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Performance InformationfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table, Heading452false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>As of January 31, 2011, Class G Shares of the Fund had not commenced operations, and did not have a performance history. The bar chart and the performance table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5 and 10 years, and since the Fund's inception, compared with those of a broad measure of market performance. Since Class G Shares are invested in the same portfolio of securities, return for Class G Shares will be substantially similar to those of Class A Shares, shown here, and will differ only to the extent that Class G Shares have higher expenses. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. For current performance information, please call 1-800-DIAL-SEI.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance, Narrative453false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000006677Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073424Member row primary compact * ~</div>falsefalseBarChart15.jpg<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column dei_LegalEntityAxis compact ck0000804239_S000006677Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073424Member row primary compact * ~</div>falsehttp://xbrl.sec.gov/rr/role/BarChartDatafalsefalse020050 - Schedule - Annual Total Returnstruefalsefalse1falseColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006677MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073424MemberColumnunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT TAX-MANAGED SMALL CAP FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006677Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT TAX-MANAGED SMALL CAP FUND - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073424Memberrr_ProspectusShareClassAxisexplicitMemberSIMT TAX-MANAGED SMALL CAP FUNDSIMT TAX-MANAGED SMALL CAP FUND - Class Giso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_AnnualReturn2001rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00falsefalsefalsetruefalse2falsetruefalse00falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.06950.0695falsefalsefalsetruefalse10truetruefalse0.06560.0656falsefalsefalsetruefalse11truetruefalse0.06950.0695falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse-0.0296-0.0296falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20010rr_AnnualReturn2001truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.0296-0.0296falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20012falseRowprimaryElement*4false0rr_AnnualReturn2002rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00falsefalsefalsetruefalse2falsetruefalse00falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.09100.0910falsefalsefalsetruefalse10truetruefalse0.08830.0883falsefalsefalsetruefalse11truetruefalse0.09100.0910falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse-0.1912-0.1912falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20020rr_AnnualReturn2002truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.1912-0.1912falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20023falseRowprimaryElement*5false0rr_AnnualReturn2003rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00falsefalsefalsetruefalse2falsetruefalse00falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.05320.0532falsefalsefalsetruefalse10truetruefalse0.05060.0506falsefalsefalsetruefalse11truetruefalse0.05320.0532falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.4870.487falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20030rr_AnnualReturn2003truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.4870.487falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20034falseRowprimaryElement*6false0rr_AnnualReturn2004rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00falsefalsefalsetruefalse2falsetruefalse00falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.04660.0466falsefalsefalsetruefalse10truetruefalse0.04410.0441falsefalsefalsetruefalse11truetruefalse0.04660.0466falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.16620.1662falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20040rr_AnnualReturn2004truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.16620.1662falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20045falseRowprimaryElement*7false0rr_AnnualReturn2005rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05780.0578falsefalsefalsetruefalse2truetruefalse0.05380.0538falsefalsefalsetruefalse3truetruefalse0.05780.0578falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.02180.0218falsefalsefalsetruefalse10truetruefalse0.01830.0183falsefalsefalsetruefalse11truetruefalse0.02180.0218falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.06840.0684falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20050rr_AnnualReturn2005truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.06840.0684falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20056falseRowprimaryElement*8false0rr_AnnualReturn2006rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.13750.1375falsefalsefalsetruefalse2truetruefalse0.13320.1332falsefalsefalsetruefalse3truetruefalse0.13750.1375falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5falsetruefalse00falsefalsefalsetruefalse6falsetruefalse00falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.04550.0455falsefalsefalsetruefalse10truetruefalse0.04390.0439falsefalsefalsetruefalse11truetruefalse0.04550.0455falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.12340.1234falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20060rr_AnnualReturn2006truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.12340.1234falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20067falseRowprimaryElement*9false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.08270.0827falsefalsefalsetruefalse2truetruefalse0.0790.079falsefalsefalsetruefalse3truetruefalse0.08270.0827falsefalsefalsetruefalse4truetruefalse0.00030.0003falsefalsefalsetruefalse5truetruefalse-0.0039-0.0039falsefalsefalsetruefalse6truetruefalse0.00030.0003falsefalsefalsetruefalse7falsetruefalse00falsefalsefalsetruefalse8falsetruefalse00falsefalsefalsetruefalse9truetruefalse0.04040.0404falsefalsefalsetruefalse10truetruefalse0.03780.0378falsefalsefalsetruefalse11truetruefalse0.04040.0404falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.01650.0165falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20070rr_AnnualReturn2007truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.01650.0165falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20078falseRowprimaryElement*10false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2908-0.2908falsefalsefalsetruefalse2truetruefalse-0.2929-0.2929falsefalsefalsetruefalse3truetruefalse-0.2908-0.2908falsefalsefalsetruefalse4truetruefalse-0.2713-0.2713falsefalsefalsetruefalse5truetruefalse-0.2738-0.2738falsefalsefalsetruefalse6truetruefalse-0.2713-0.2713falsefalsefalsetruefalse7truetruefalse-0.2453-0.2453falsefalsefalsetruefalse8truetruefalse-0.2453-0.2453falsefalsefalsetruefalse9truetruefalse-0.0713-0.0713falsefalsefalsetruefalse10truetruefalse-0.0735-0.0735falsefalsefalsetruefalse11truetruefalse-0.0713-0.0713falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse-0.4116-0.4116falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20080rr_AnnualReturn2008truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.4116-0.4116falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 20089falseRowprimaryElement*11false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.16240.1624falsefalsefalsetruefalse2truetruefalse0.15850.1585falsefalsefalsetruefalse3truetruefalse0.16240.1624falsefalsefalsetruefalse4truetruefalse0.03890.0389falsefalsefalsetruefalse5truetruefalse0.03560.0356falsefalsefalsetruefalse6truetruefalse0.03890.0389falsefalsefalsetruefalse7truetruefalse0.18250.1825falsefalsefalsetruefalse8truetruefalse0.18250.1825falsefalsefalsetruefalse9truetruefalse0.18480.1848falsefalsefalsetruefalse10truetruefalse0.18110.1811falsefalsefalsetruefalse11truetruefalse0.18480.1848falsefalsefalsetruefalse12falsetruefalse00falsefalsefalsetruefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15truetruefalse0.35780.3578falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalseAnnual Return 20090rr_AnnualReturn2009truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.35780.3578falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 200910falseRowprimaryElement*12false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14880.1488falsefalsefalsetruefalse2truetruefalse0.14630.1463falsefalsefalsetruefalse3truetruefalse0.14880.1488falsefalsefalsetruefalse4truetruefalse0.07170.0717falsefalsefalsetruefalse5truetruefalse0.0710.071falsefalsefalsetruefalse6truetruefalse0.07170.0717falsefalsefalsetruefalse7truetruefalse0.15210.1521falsefalsefalsetruefalse8truetruefalse0.15210.1521falsefalsefalsetruefalse9truetruefalse0.11010.1101falsefalsefalsetruefalse10truetruefalse0.10880.1088falsefalsefalsetruefalse11truetruefalse0.11010.1101falsefalsefalsetruefalse12truetruefalse0.07520.0752falsefalsefalsetruefalse13truetruefalse0.07520.0752falsefalsefalsetruefalse14truetruefalse0.07520.0752falsefalsefalsetruefalse15truetruefalse0.24070.2407falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return 20100rr_AnnualReturn2010truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.24070.2407falsefalsefalsetruefalseOthernanafalsefalseAnnual Return 2010110Annual Total Returns UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columndei_LegalEntityAxisAxisck0000804239_S000006677MemberColumnrr_ProspectusShareClassAxisAxisck0000804239_C000073424MemberColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to BarChartData.No authoritative reference available.falsefalseBar Chart [Table]454false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>Best Quarter: 22.54% (06/30/03) Worst Quarter: -27.26% (12/31/08)</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart, Closing455false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalsePerformance Table, Heading456false0rr_PerformanceTableNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<pre>This table compares the Fund's average annual total returns for Class A Shares to those of the Russell 2500 Index. The Russell 2500 Index is a widely-recognized, capitalization-weighted (companies with larger market capitalizations have more influence than those with smaller market capitalizations) index of the 2,500 smallest U.S. companies out of the 3,000 largest U.S. companies. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.</pre>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also shouldshow the returns of an appropriate broadbased securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____). For a Fund that provides annual total returns for only one calendar year or for a Fund that does not include the bar chart because it does not have annual returns for a full calendar year, modify, as appropriate, the narrative explanation required by paragraph (c)(2)(i) (e.g., by stating that the information gives some indication of the risks of an investment in the Fund by comparing the Fund's performance with a broad measure of market performance).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iv -Subsection b falsefalsePerformance Table, Narrative457false0rr_AverageAnnualReturnCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Average Annual Total Returns (for the periods ended December 31, 2010)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 5 -Subsection b falsefalseAverage Annual Returns, Caption458false0rr_PerformanceTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact ck0000804239_S000006677Member column rr_ProspectusShareClassAxis compact ck0000804239_C000073424Member column rr_PerformanceMeasureAxis compact * row primary compact * ~</div>falsefalse<div style="display:none">~ http://xbrl.sec.gov/rr/role/PerformanceTableData column dei_LegalEntityAxis compact 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taxes)falsefalsefalsetruefalse7falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse8falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse9falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse10falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse11falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse12falsetruefalse00Class A Return After Taxes on Distribution and Sale of Fund Sharesfalsefalsefalsetruefalse13falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse14falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse15falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse16falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse17falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse18falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse19falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse20falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse21falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse22falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse23falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse24falsetruefalse00MSCI World Index, Hedged Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse25falsetruefalse00MSCI World Minimum Volatility Index, 100% Hedged to USD Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse26falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse27falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse28falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse29falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse30falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse31falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse32falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse33falsetruefalse00Russell 3000 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse34falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse35falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse36falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse37falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse38falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse39falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse40falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse41falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse42falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse43falsetruefalse00Class I Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse44falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse45falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse46falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse47falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse48falsetruefalse00Class A Return Before Taxesfalsefalsefalsetruefalse49falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse50falsetruefalse00Class A Return After Taxes on Distributionsfalsefalsefalsetruefalse51falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse52falsetruefalse00Class I Return Before Taxesfalsefalsefalsetruefalse53falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse54falsetruefalse00Class I Return After Taxes on Distributionsfalsefalsefalsetruefalse55falsetruefalse00Class I Return After 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If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, LabelfalseUSDfalsefalse$2falseColumnprimaryElement*4false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.14880.1488falsefalsefalsetruefalse2truetruetrue0.16930.1693falsefalsefalsetruefalse3truetruetrue0.14350.1435falsefalsefalsetruefalse4truetruetrue0.09650.0965falsefalsefalsetruefalse5truetruetrue0.14630.1463falsefalsefalsetruefalse6truetruetrue0.16930.1693falsefalsefalsetruefalse7truetruetrue0.14190.1419falsefalsefalsetruefalse8truetruetrue0.09490.0949falsefalsefalsetruefalse9truetruetrue0.14880.1488falsefalsefalsetruefalse10truetruetrue0.16930.1693falsefalsefalsetruefalse11truetruetrue0.14350.1435falsefalsefalsetruefalse12truetruetrue0.09650.0965falsefalsefalsetruefalse13truetruetrue0.07170.0717falsefalsefalsetruefalse14truetruetrue0.10460.1046falsefalsefalsetruefalse15truetruetrue0.12030.1203falsefalsefalsetruefalse16truetruetrue0.07170.0717falsefalsefalsetruefalse17truetruetrue0.04660.0466falsefalsefalsetruefalse18truetruetrue0.07100.0710falsefalsefalsetruefalse19truetruetrue0.10460.1046falsefalsefalsetruefalse20truetruetrue0.12030.1203falsefalsefalsetruefalse21truetruetrue0.07100.0710falsefalsefalsetruefalse22truetruetrue0.04610.0461falsefalsefalsetruefalse23truetruetrue0.07170.0717falsefalsefalsetruefalse24truetruetrue0.10460.1046falsefalsefalsetruefalse25truetruetrue0.12030.1203falsefalsefalsetruefalse26truetruetrue0.07170.0717falsefalsefalsetruefalse27truetruetrue0.04660.0466falsefalsefalsetruefalse28truetruetrue0.15210.1521falsefalsefalsetruefalse29truetruetrue0.16930.1693falsefalsefalsetruefalse30truetruetrue0.14670.1467falsefalsefalsetruefalse31truetruetrue0.09860.0986falsefalsefalsetruefalse32truetruetrue0.15210.1521falsefalsefalsetruefalse33truetruetrue0.16930.1693falsefalsefalsetruefalse34truetruetrue0.14670.1467falsefalsefalsetruefalse35truetruetrue0.09860.0986falsefalsefalsetruefalse36truetruetrue0.11010.1101falsefalsefalsetruefalse37truetruetrue0.06540.0654falsefalsefalsetruefalse38truetruetrue0.09500.0950falsefalsefalsetruefalse39truetruetrue0.07130.0713falsefalsefalsetruefalse40truetruetrue0.10880.1088falsefalsefalsetruefalse41truetruetrue0.06540.0654falsefalsefalsetruefalse42truetruetrue0.09450.0945falsefalsefalsetruefalse43truetruetrue0.07050.0705falsefalsefalsetruefalse44truetruetrue0.11010.1101falsefalsefalsetruefalse45truetruetrue0.06540.0654falsefalsefalsetruefalse46truetruetrue0.09500.0950falsefalsefalsetruefalse47truetruetrue0.07130.0713falsefalsefalsetruefalse48truetruetrue0.07520.0752falsefalsefalsetruefalse49truetruetrue0.06540.0654falsefalsefalsetruefalse50truetruetrue0.05190.0519falsefalsefalsetruefalse51truetruetrue0.04970.0497falsefalsefalsetruefalse52truetruetrue0.07520.0752falsefalsefalsetruefalse53truetruetrue0.06540.0654falsefalsefalsetruefalse54truetruetrue0.05190.0519falsefalsefalsetruefalse55truetruetrue0.04970.0497falsefalsefalsetruefalse56truetruetrue0.07520.0752falsefalsefalsetruefalse57truetruetrue0.06540.0654falsefalsefalsetruefalse58truetruetrue0.05190.0519falsefalsefalsetruefalse59truetruetrue0.04970.0497falsefalsefalsetruefalse60truetruetrue0.24070.2407falsefalsefalsetruefalse61truetruetrue0.26710.2671falsefalsefalsetruefalse62truetruetrue0.23950.2395falsefalsefalsetruefalse63truetruetrue0.15640.1564falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, 1 YearfalseUSDfalsefalse$3falseColumnprimaryElement*5false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.03130.0313falsefalsefalsetruefalse2truetruetrue0.02740.0274falsefalsefalsetruefalse3truetruetrue0.02580.0258falsefalsefalsetruefalse4truetruetrue0.02500.0250falsefalsefalsetruefalse5truetruetrue0.02800.0280falsefalsefalsetruefalse6truetruetrue0.02740.0274falsefalsefalsetruefalse7truetruetrue0.02260.0226falsefalsefalsetruefalse8truetruetrue0.02200.0220falsefalsefalsetruefalse9truetruetrue0.03130.0313falsefalsefalsetruefalse10truetruetrue0.02740.0274falsefalsefalsetruefalse11truetruetrue0.02580.0258falsefalsefalsetruefalse12truetruetrue0.02500.0250falsefalsefalsetruefalse13falsetruetrue00falsefalsefalsetruefalse14falsetruetrue00falsefalsefalsetruefalse15falsetruetrue00falsefalsefalsetruefalse16falsetruetrue00falsefalsefalsetruefalse17falsetruetrue00falsefalsefalsetruefalse18falsetruetrue00falsefalsefalsetruefalse19falsetruetrue00falsefalsefalsetruefalse20falsetruetrue00falsefalsefalsetruefalse21falsetruetrue00falsefalsefalsetruefalse22falsetruetrue00falsefalsefalsetruefalse23falsetruetrue00falsefalsefalsetruefalse24falsetruetrue00falsefalsefalsetruefalse25falsetruetrue00falsefalsefalsetruefalse26falsetruetrue00falsefalsefalsetruefalse27falsetruetrue00falsefalsefalsetruefalse28falsetruetrue00falsefalsefalsetruefalse29falsetruetrue00falsefalsefalsetruefalse30falsetruetrue00falsefalsefalsetruefalse31falsetruetrue00falsefalsefalsetruefalse32falsetruetrue00falsefalsefalsetruefalse33falsetruetrue00falsefalsefalsetruefalse34falsetruetrue00falsefalsefalsetruefalse35falsetruetrue00falsefalsefalsetruefalse36truetruetrue0.05850.0585falsefalsefalsetruefalse37truetruetrue0.05800.0580falsefalsefalsetruefalse38truetruetrue0.04070.0407falsefalsefalsetruefalse39truetruetrue0.03930.0393falsefalsefalsetruefalse40truetruetrue0.05620.0562falsefalsefalsetruefalse41truetruetrue0.05800.0580falsefalsefalsetruefalse42truetruetrue0.03940.0394falsefalsefalsetruefalse43truetruetrue0.03790.0379falsefalsefalsetruefalse44truetruetrue0.05850.0585falsefalsefalsetruefalse45truetruetrue0.05800.0580falsefalsefalsetruefalse46truetruetrue0.04070.0407falsefalsefalsetruefalse47truetruetrue0.03930.0393falsefalsefalsetruefalse48falsetruetrue00falsefalsefalsetruefalse49falsetruetrue00falsefalsefalsetruefalse50falsetruetrue00falsefalsefalsetruefalse51falsetruetrue00falsefalsefalsetruefalse52falsetruetrue00falsefalsefalsetruefalse53falsetruetrue00falsefalsefalsetruefalse54falsetruetrue00falsefalsefalsetruefalse55falsetruetrue00falsefalsefalsetruefalse56falsetruetrue00falsefalsefalsetruefalse57falsetruetrue00falsefalsefalsetruefalse58falsetruetrue00falsefalsefalsetruefalse59falsetruetrue00falsefalsefalsetruefalse60truetruetrue0.02510.0251falsefalsefalsetruefalse61truetruetrue0.04860.0486falsefalsefalsetruefalse62truetruetrue0.02020.0202falsefalsefalsetruefalse63truetruetrue0.02090.0209falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn 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available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruetrue00falsefalsefalsetruefalse2falsetruetrue00falsefalsefalsetruefalse3falsetruetrue00falsefalsefalsetruefalse4falsetruetrue00falsefalsefalsetruefalse5falsetruetrue00falsefalsefalsetruefalse6falsetruetrue00falsefalsefalsetruefalse7falsetruetrue00falsefalsefalsetruefalse8falsetruetrue00falsefalsefalsetruefalse9falsetruetrue00falsefalsefalsetruefalse10falsetruetrue00falsefalsefalsetruefalse11falsetruetrue00falsefalsefalsetruefalse12falsetruetrue00falsefalsefalsetruefalse13falsetruetrue00falsefalsefalsetruefalse14falsetruetrue00falsefalsefalsetruefalse15falsetruetrue00falsefalsefalsetruefalse16falsetruetrue00falsefalsefalsetruefalse17falsetruetrue00falsefalsefalsetruefalse18falsetruetrue00falsefalsefalsetruefalse19falsetruetrue00falsefalsefalsetruefalse20falsetruetrue00falsefalsefalsetruefalse21falsetruetrue00falsefalsefalsetruefalse22falsetruetrue00falsefalsefalsetruefalse23falsetruetrue00falsefalsefalsetruefalse24falsetruetrue00falsefalsefalsetruefalse25falsetruetrue00falsefalsefalsetruefalse26falsetruetrue00falsefalsefalsetruefalse27falsetruetrue00falsefalsefalsetruefalse28falsetruetrue00falsefalsefalsetruefalse29falsetruetrue00falsefalsefalsetruefalse30falsetruetrue00falsefalsefalsetruefalse31falsetruetrue00falsefalsefalsetruefalse32falsetruetrue00falsefalsefalsetruefalse33falsetruetrue00falsefalsefalsetruefalse34falsetruetrue00falsefalsefalsetruefalse35falsetruetrue00falsefalsefalsetruefalse36truetruetrue0.05730.0573falsefalsefalsetruefalse37truetruetrue0.05840.0584falsefalsefalsetruefalse38truetruetrue0.03830.0383falsefalsefalsetruefalse39truetruetrue0.03770.0377falsefalsefalsetruefalse40truetruetrue0.05470.0547falsefalsefalsetruefalse41truetruetrue0.05840.0584falsefalsefalsetruefalse42truetruetrue0.03650.0365falsefalsefalsetruefalse43truetruetrue0.03590.0359falsefalsefalsetruefalse44truetruetrue0.05730.0573falsefalsefalsetruefalse45truetruetrue0.05840.0584falsefalsefalsetruefalse46truetruetrue0.03830.0383falsefalsefalsetruefalse47truetruetrue0.03770.0377falsefalsefalsetruefalse48falsetruetrue00falsefalsefalsetruefalse49falsetruetrue00falsefalsefalsetruefalse50falsetruetrue00falsefalsefalsetruefalse51falsetruetrue00falsefalsefalsetruefalse52falsetruetrue00falsefalsefalsetruefalse53falsetruetrue00falsefalsefalsetruefalse54falsetruetrue00falsefalsefalsetruefalse55falsetruetrue00falsefalsefalsetruefalse56falsetruetrue00falsefalsefalsetruefalse57falsetruetrue00falsefalsefalsetruefalse58falsetruetrue00falsefalsefalsetruefalse59falsetruetrue00falsefalsefalsetruefalse60truetruetrue0.05110.0511falsefalsefalsetruefalse61truetruetrue0.06980.0698falsefalsefalsetruefalse62truetruetrue0.04640.0464falsefalsefalsetruefalse63truetruetrue0.04390.0439falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseAverage Annual Returns, 10 YearsfalseUSDfalsefalse$5falseColumnprimaryElement*7false0rr_AverageAnnualReturnSinceInceptionrrfalsenadurationNo definition 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Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 4 -Subsection b falsefalseAverage Annual Returns, Inception DatefalseUSDfalsefalse$1falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006677MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000073424MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT TAX-MANAGED SMALL CAP FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006677Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT TAX-MANAGED SMALL CAP FUND - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073424Memberrr_ProspectusShareClassAxisexplicitMembertruefalseBefore Taxesrr_PerformanceMeasureAxisrr_PerformanceMeasureDomainrr_PerformanceMeasureAxisexplicitMemberSIMT TAX-MANAGED SMALL CAP FUNDSIMT TAX-MANAGED SMALL CAP FUND - Class GBefore Taxesiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class A Return Before TaxesClass A Return Before Taxesfalsefalsefalsetruefalse2truetruetrue0.24070.2407falsefalsefalsetruefalse3truetruetrue0.02510.0251falsefalsefalsetruefalse4truetruetrue0.05110.0511falsefalsefalsetruefalse5truetruetrue0.04830.0483falsefalsefalsetruefalse6falsetruefalse002000-10-312000-10-31[1]falsefalsetruetruefalseOthernanafalsefalseSIMT TAX-MANAGED SMALL CAP FUND - Class G2falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006677MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000073424MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT TAX-MANAGED SMALL CAP FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006677Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT TAX-MANAGED SMALL CAP FUND - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073424Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseRussell 2500 Index Returnrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_RRINDEX00009Memberrr_PerformanceMeasureAxisexplicitMemberSIMT TAX-MANAGED SMALL CAP FUNDSIMT TAX-MANAGED SMALL CAP FUND - Class GRussell 2500 Index ReturnStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Russell 2500 Index Return (reflects no deduction for fees, expenses or taxes)Russell 2500 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalsetruefalse2truetruetrue0.26710.2671falsefalsefalsetruefalse3truetruetrue0.04860.0486falsefalsefalsetruefalse4truetruetrue0.06980.0698falsefalsefalsetruefalse5truetruetrue0.06760.0676falsefalsefalsetruefalse6falsetruefalse002000-10-312000-10-31falsefalsetruetruefalseOthernanafalsefalseSIMT TAX-MANAGED SMALL CAP FUND - Class G Russell 2500 Index Return3falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006677MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000073424MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT TAX-MANAGED SMALL CAP FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006677Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT TAX-MANAGED SMALL CAP FUND - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073424Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseAfter Taxes on Distributionsrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsMemberrr_PerformanceMeasureAxisexplicitMemberSIMT TAX-MANAGED SMALL CAP FUNDSIMT TAX-MANAGED SMALL CAP FUND - Class GAfter Taxes on DistributionsStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class A Return After Taxes on DistributionsClass A Return After Taxes on Distributionsfalsefalsefalsetruefalse2truetruetrue0.23950.2395falsefalsefalsetruefalse3truetruetrue0.02020.0202falsefalsefalsetruefalse4truetruetrue0.04640.0464falsefalsefalsetruefalse5truetruetrue0.04370.0437falsefalsefalsetruefalse6falsetruefalse002000-10-312000-10-31[1]falsefalsetruetruefalseOthernanafalsefalseSIMT TAX-MANAGED SMALL CAP FUND - Class G After Taxes on Distributions4falseRowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006677MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000073424MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*duration2010-01-29T00:00:002011-02-04T00:00:00falsefalseSIMT TAX-MANAGED SMALL CAP FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_S000006677Memberdei_LegalEntityAxisexplicitMemberfalsefalseSIMT TAX-MANAGED SMALL CAP FUND - Class Grr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000804239_C000073424Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseAfter Taxes on Distributions and Salesrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsAndSalesMemberrr_PerformanceMeasureAxisexplicitMemberSIMT TAX-MANAGED SMALL CAP FUNDSIMT TAX-MANAGED SMALL CAP FUND - Class GAfter Taxes on Distributions and SalesStandard00truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Class A Return After Taxes on Distributions and Sale of Fund SharesClass A Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalsetruefalse2truetruetrue0.15640.1564falsefalsefalsetruefalse3truetruetrue0.02090.0209falsefalsefalsetruefalse4truetruetrue0.04390.0439falsefalsefalsetruefalse5truetruetrue0.04140.0414falsefalsefalsetruefalse6falsetruefalse002000-10-312000-10-31[1]falsefalsetruetruefalseOthernanafalsefalseSIMT TAX-MANAGED SMALL CAP FUND - Class G After Taxes on Distributions and Sales1Index returns are shown from October 31, 2000.64Average Annual Total Returns SIMT TAX-MANAGED SMALL CAP FUNDUnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*RowperiodPeriod*Rowdei_LegalEntityAxisAxisck0000804239_S000006677MemberRowrr_ProspectusShareClassAxisAxisck0000804239_C000073424MemberRowrr_PerformanceMeasureAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to PerformanceTableData.No authoritative reference available.falsefalsePerformance [Table]1442Risk/Return SummaryUnKnownUnKnownUnKnownUnKnownfalsetrue