2.4.0.8020030 - Document - Risk/Return Summary {Unlabeled} - Class A Prospectus - SAAT MODERATE STRATEGY ALLOCATION FUNDfalsefalsetrue1false falsefalsedoc_Class_A_ProspectusMember_S000005818Memberhttp://www.sec.gov/CIK0001003632duration2013-03-31T00:00:002013-03-31T00:00:001false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00Class A Prospectus | SAAT MODERATE STRATEGY ALLOCATION FUNDfalsefalsefalse1false truefalsedoc_Class_A_ProspectusMember_S000005818Memberhttp://www.sec.gov/CIK0001003632duration2013-03-31T00:00:002013-03-31T00:00:00falsefalseck0001003632_doc_Class_A_ProspectusMemberdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_doc_Class_A_ProspectusMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseck0001003632_S000005818Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_S000005818Memberdei_LegalEntityAxisexplicitMembernanafalse0Class A Prospectus | SAAT MODERATE STRATEGY ALLOCATION FUND2false 4rr_RiskReturnHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00SAAT MODERATE STRATEGY ALLOCATION FUNDfalsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 false0Risk/Return [Heading]3false 4rr_ObjectiveHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment Goalfalsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a false0Objective [Heading]4false 4rr_ObjectivePrimaryTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="margin:0pt 0pt 6pt 0pt;" align="left"> <font style="font-size:10pt; font-family: Arial, Helvetica;">Provide the opportunity for capital appreciation with some opportunity to generate income.</font> </p>falsefalsefalsenonnum:textBlockItemTypenaInvestment 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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a false0Objective, Primary [Text Block]5false 4rr_ExpenseHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and Expensesfalsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 1 -Subparagraph d false0Expense [Heading]6false 4rr_ExpenseNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="margin:0pt 0pt 6pt 0pt;" align="left"> <font style="font-size:10pt; font-family: Arial, Helvetica;">This table describes the fees and expenses that you may pay if you buy and hold Fund shares.</font> </p>falsefalsefalsenonnum:textBlockItemTypenaThis 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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 1 -Subparagraph b false0Expense Narrative [Text Block]7false 4rr_OperatingExpensesCaptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00ANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsexbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 7 false0Operating Expenses Caption [Text]8false 4rr_AnnualFundOperatingExpensesTableTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00~ http://seic.com/20130729/role/ScheduleAnnualFundOperatingExpenses20031 column dei_DocumentInformationDocumentAxis compact ck0001003632_doc_Class_A_ProspectusMember column dei_LegalEntityAxis compact ck0001003632_S000005818Member row primary compact * ~falsefalse~ http://seic.com/20130729/role/ScheduleAnnualFundOperatingExpenses20031 column dei_DocumentInformationDocumentAxis compact ck0001003632_doc_Class_A_ProspectusMember column dei_LegalEntityAxis compact ck0001003632_S000005818Member row primary compact * ~falsehttp://seic.com/20130729/role/ScheduleAnnualFundOperatingExpenses20031020031 - Schedule - Annual Fund Operating Expensestruefalsefalse1falseColumnperiodPeriod*Columndei_DocumentInformationDocumentAxisAxisck0001003632_doc_Class_A_ProspectusMemberColumndei_LegalEntityAxisAxisck0001003632_S000005818MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2013-03-31T00:00:002013-03-31T00:00:00falsefalseClass A Prospectusdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_doc_Class_A_ProspectusMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseSAAT MODERATE STRATEGY ALLOCATION FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_S000005818Memberdei_LegalEntityAxisexplicitMemberfalsefalseSAAT MODERATE STRATEGY ALLOCATION FUND - CLASS Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_C000015963Memberrr_ProspectusShareClassAxisexplicitMemberClass A ProspectusSAAT MODERATE STRATEGY ALLOCATION FUNDSAAT MODERATE STRATEGY ALLOCATION FUND - CLASS ApureStandardhttp://www.xbrl.org/2003/instancepurexbrli0Standard0 USDfalsefalseduration2013-03-31T00:00:002013-03-31T00:00:00$1falseRowprimaryElement*3false 4rr_ManagementFeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabelrr: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph a false0Management Fees 0rr_ManagementFeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truetruetrue0.00100.0010falsefalsefalserr: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph a false0Management Fees2falseRowprimaryElement*4false 4rr_DistributionAndService12b1FeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabelrr: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 9 false0Distribution (12b-1) Fees 0rr_DistributionAndService12b1FeesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truetruetrue0.00000.0000falsefalsefalserr: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 9 false0Distribution (12b-1) Fees3falseRowprimaryElement*5false 4rr_OtherExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabelrr: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph c -Clause i false0Other Expenses 0rr_OtherExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truetruetrue0.00280.0028falsefalsefalserr: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph c -Clause i false0Other Expenses4falseRowprimaryElement*6false 4rr_AcquiredFundFeesAndExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabelrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 11 false0Acquired Fund Fees and Expenses (AFFE) 0rr_AcquiredFundFeesAndExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1truetruetrue0.01000.0100falsefalsefalserr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection table -Paragraph 1 -Subparagraph 11 false0Acquired Fund Fees and Expenses (AFFE)5falseRowprimaryElement*7false 4rr_ExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabelrr: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph d false0Total Annual Fund Operating Expenses 0rr_ExpensesOverAssetsrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel[1]1truetruetrue0.01380.0138falsefalsefalserr: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 3 -Subparagraph d false0Total Annual Fund Operating Expenses1Because the Fund incurred AFFE during the most recent 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.falseAnnual Fund Operating Expenses UnKnownUnKnownUnKnownUnKnownfalsefalsefalseSheet150415010ColumnperiodPeriod*Columndei_DocumentInformationDocumentAxisAxisck0001003632_doc_Class_A_ProspectusMemberColumndei_LegalEntityAxisAxisck0001003632_S000005818MemberColumnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*falsenonnum:textBlockItemTypenaContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No definition available.false0Annual Fund Operating Expenses [Table]9false 4rr_ExpenseExampleHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00EXAMPLEfalsefalsefalsexbrli:stringItemTypestringHeading for Expense Example.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 4 false0Expense Example [Heading]10false 4rr_ExpenseExampleNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p align="left" style="margin:0pt 0pt 6pt 0pt;"> <font style="font-size:10pt; font-family: Arial, Helvetica;">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 redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same.</font></p>falsefalsefalsenonnum:textBlockItemTypenaThe 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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 1 false0Expense Example Narrative [Text Block]11false 4rr_ExpenseExampleByYearCaptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Although your actual costs may be higher or lower, based on these assumptions your costs would be:falsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 2 false0Expense Example by, Year, Caption [Text]12false 4rr_ExpenseExampleWithRedemptionTableTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00~ http://seic.com/20130729/role/ScheduleExpenseExampleTransposed20032 column dei_DocumentInformationDocumentAxis compact ck0001003632_doc_Class_A_ProspectusMember column dei_LegalEntityAxis compact ck0001003632_S000005818Member row primary compact * ~falsefalse~ http://seic.com/20130729/role/ScheduleExpenseExampleTransposed20032 column dei_DocumentInformationDocumentAxis compact ck0001003632_doc_Class_A_ProspectusMember column dei_LegalEntityAxis compact ck0001003632_S000005818Member row primary compact * ~truehttp://seic.com/20130729/role/ScheduleExpenseExampleTransposed20032020032 - Schedule - Expense Example {Transposed}truefalsefalse1falseColumnprimaryElement*3false 4rr_ExpenseExampleYear01rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabelrr: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 4 false21 Year USDfalsefalse$2falseColumnprimaryElement*4false 4rr_ExpenseExampleYear03rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabelrr: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 2 false23 Years USDfalsefalse$3falseColumnprimaryElement*5false 4rr_ExpenseExampleYear05rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabelrr: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 2 false25 Years USDfalsefalse$4falseColumnprimaryElement*6false 4rr_ExpenseExampleYear10rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabelrr: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 1 -Subparagraph 2 false210 Years USDfalsefalse$1falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxisck0001003632_doc_Class_A_ProspectusMemberRowdei_LegalEntityAxisAxisck0001003632_S000005818MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2013-03-31T00:00:002013-03-31T00:00:00falsefalseClass A Prospectusdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_doc_Class_A_ProspectusMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseSAAT MODERATE STRATEGY ALLOCATION FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_S000005818Memberdei_LegalEntityAxisexplicitMemberfalsefalseSAAT MODERATE STRATEGY ALLOCATION FUND - CLASS Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_C000015963Memberrr_ProspectusShareClassAxisexplicitMemberClass A ProspectusSAAT MODERATE STRATEGY ALLOCATION FUNDSAAT MODERATE STRATEGY ALLOCATION FUND - CLASS AusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170 0truefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue140140falsefalsefalse2truefalsetrue437437falsefalsefalse3truefalsetrue755755falsefalsefalse4truefalsetrue16571657falsefalsefalsenanafalse0Class A Prospectus SAAT MODERATE STRATEGY ALLOCATION FUND SAAT MODERATE STRATEGY ALLOCATION FUND - CLASS AfalseExpense Example (USD $)UnKnownUnKnownUnKnownUnKnownfalsefalsefalseSheet413041024ColumnprimaryElement*RowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxisck0001003632_doc_Class_A_ProspectusMemberRowdei_LegalEntityAxisAxisck0001003632_S000005818MemberRowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsenonnum:textBlockItemTypenaContains a command for the SEC Viewer for the role corresponding to ExpenseExample.No definition available.false0Expense Example, With Redemption [Table]13false 4rr_PortfolioTurnoverHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00PORTFOLIO TURNOVERfalsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection instructions -Paragraph 5 false0Portfolio Turnover [Heading]14false 4rr_PortfolioTurnoverTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="margin:0pt 0pt 6pt 0pt;" align="left"> <font style="font-size:10pt; font-family: Arial, Helvetica;">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 48% of the average value of its portfolio.</font> </p>falsefalsefalsenonnum:textBlockItemTypenaDisclose 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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Subsection example -Paragraph 3 false0Portfolio Turnover [Text Block]15false 4rr_StrategyHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Investment Strategiesfalsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a false0Strategy [Heading]16false 4rr_StrategyNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="margin:0pt 0pt 6pt 0pt;" align="left"> <font style="font-size:10pt; font-family: Arial, Helvetica;"><b>Goallink Strategy Component</b></font> </p> <br/><p style="margin:0pt 0pt 6pt 0pt;" align="left"> <font style="font-size:10pt; font-family: Arial, Helvetica;">The Moderate Strategy Allocation Fund is designed to be one component of a broader strategy (GoalLink Strategy) employed by SEI Investments Management Corporation (SIMC or the Adviser), in which shareholders allocate their overall investment portfolio among investments in the Fund as well as one or more SEI funds that invest primarily in municipal bonds (Muni Bond Funds). The allocation between the Fund and the Muni Bond Funds is based on models developed by SIMC and selected by the shareholder (in consultation with his or her investment adviser). Accordingly, the Fund is not recommended for persons who do not participate in the GoalLink Strategy.</font> </p> <br/><p style="margin:0pt 0pt 6pt 0pt;" align="left"> <font style="font-size:10pt; font-family: Arial, Helvetica;"><b>Investment Strategy</b></font> </p> <br/><p style="margin:0pt 0pt 6pt 0pt;" align="left"> <font style="font-size:10pt; font-family: Arial, Helvetica;">Under normal circumstances, the Moderate Strategy Allocation Fund will seek to provide the opportunity for capital appreciation with some opportunity to generate income. The Fund invests in other SEI funds, each of which has its own investment goal (the Underlying SEI Funds), that form the non-Underlying Muni Bond Fund component of the GoalLink Strategy. The Underlying SEI Funds invest, in turn, in securities and other instruments of various asset classes. Each of the Underlying SEI Funds is managed by one or more sub-advisers (each, a Sub-Adviser and collectively, the Sub-Advisers) under the supervision of SIMC, or, in certain circumstances, is managed directly by SIMC.</font> </p> <br/><p style="margin:0pt 0pt 6pt 0pt;" align="left"> <font style="font-size:10pt; font-family: Arial, Helvetica;">The Fund's assets may be diversified across Underlying SEI equity funds, bond and money market funds, and real estate funds. The equity funds may consist of a wide range of investment styles that provide investment exposure to U.S. and/or foreign equity securities of companies of various capitalization ranges. The bond funds may consist of a wide range of investment styles that provide exposure to U.S. and/or foreign fixed income securities of varying credit quality (including junk bonds), maturity and duration. The real estate funds provide exposure to the equity securities of real estate companies.</font> </p> <br/><p style="margin:0pt 0pt 6pt 0pt;" align="left"> <font style="font-size:10pt; font-family: Arial, Helvetica;">The Fund's assets are allocated among a variety of Underlying SEI Funds within the following percentage ranges:</font> </p> <br/><table border="0" cellspacing="0" cellpadding="0" width="100%"> <tr> <td colspan="3" width="186" align="left" valign="bottom" style="padding:0pt .7pt 0pt 0pt; border:none; border-bottom:solid windowtext 1pt;"> <p style="margin:0pt 0pt 0pt 0pt"> <font style="font-size:8pt; font-family: Arial, Helvetica;"><b>Underlying SEI Fund Type</b></font> </p> </td> <td colspan="1"> &#160; </td> <td colspan="3" width="173" align="center" valign="bottom" style="padding:0pt .7pt 0pt 0pt; border:none; border-bottom:solid windowtext 1pt;"> <font style="font-size:8pt; font-family: Arial, Helvetica;"><b>Investment Range<br /> </b></font><font style="font-size:8pt; font-family: Arial, Helvetica;"><b>(Percentage of the Fund's Assets)</b></font> </td> <td colspan="1"> &#160; </td> </tr> <tr> <td colspan="3" width="186" align="left" valign="bottom" style="padding:6pt .7pt 0pt 0pt; background-color: #CCEEFF;"> <p style="margin:0pt 0pt 0pt 0pt"> <font style="font-size:8pt; font-family: Arial, Helvetica;"><u>U.S. Equity Funds</u></font> </p> </td> <td colspan="1" style="background-color: #CCEEFF;"> &#160; </td> <td colspan="1" width="8" valign="bottom" style="padding:6pt .7pt 0pt 0pt; background-color: #CCEEFF;"> &#160; </td> <td colspan="1" width="143" align="right" valign="bottom" style="padding:6pt .7pt 0pt 0pt; background-color: #CCEEFF;"> <p style="margin:0pt 0pt 0pt 0pt"> <font style="font-size:8pt; font-family: Arial, Helvetica;">0-100</font> </p> </td> <td colspan="1" width="22" align="left" valign="bottom" style="padding:6pt .7pt 0pt 0pt; background-color: #CCEEFF;"> <p style="margin:0pt 0pt 0pt 0pt; white-space:nowrap"> <font style="font-size:8pt; font-family: Arial, Helvetica;">%</font> </p> </td> <td colspan="1" width="8" style="background-color: #CCEEFF;"> &#160; </td> </tr> <tr> <td colspan="3" width="186" align="left" valign="bottom" style="padding:6pt .7pt 0pt 0pt;"> <p style="margin:0pt 0pt 0pt 0pt"> <font style="font-size:8pt; font-family: Arial, Helvetica;"><u>Non-Investment Grade Bond Funds</u></font> </p> </td> <td colspan="1"> &#160; </td> <td colspan="1" width="8" valign="bottom" style="padding:6pt .7pt 0pt 0pt;"> &#160; </td> <td colspan="1" width="143" align="right" valign="bottom" style="padding:6pt .7pt 0pt 0pt;"> <p style="margin:0pt 0pt 0pt 0pt"> <font style="font-size:8pt; font-family: Arial, Helvetica;">0-70</font> </p> </td> <td colspan="1" width="22" align="left" valign="bottom" style="padding:6pt .7pt 0pt 0pt;"> <p style="margin:0pt 0pt 0pt 0pt; white-space:nowrap"> <font style="font-size:8pt; font-family: Arial, Helvetica;">%</font> </p> </td> <td colspan="1" width="8"> &#160; </td> </tr> <tr> <td colspan="3" width="186" align="left" valign="bottom" style="padding:6pt .7pt 0pt 0pt; background-color: #CCEEFF;"> <p style="margin:0pt 0pt 0pt 0pt"> <font style="font-size:8pt; font-family: Arial, Helvetica;"><u>Investment Grade Bond &amp; Money Market Funds</u></font> </p> </td> <td colspan="1" style="background-color: #CCEEFF;"> &#160; </td> <td colspan="1" width="8" valign="bottom" style="padding:6pt .7pt 0pt 0pt; background-color: #CCEEFF;"> &#160; </td> <td colspan="1" width="143" align="right" valign="bottom" style="padding:6pt .7pt 0pt 0pt; background-color: #CCEEFF;"> <p style="margin:0pt 0pt 0pt 0pt"> <font style="font-size:8pt; font-family: Arial, Helvetica;">0-60</font> </p> </td> <td colspan="1" width="22" align="left" valign="bottom" style="padding:6pt .7pt 0pt 0pt; background-color: #CCEEFF;"> <p style="margin:0pt 0pt 0pt 0pt; white-space:nowrap"> <font style="font-size:8pt; font-family: Arial, Helvetica;">%</font> </p> </td> <td colspan="1" width="8" style="background-color: #CCEEFF;"> &#160; </td> </tr> <tr> <td colspan="3" width="186" align="left" valign="bottom" style="padding:6pt .7pt 0pt 0pt;"> <p style="margin:0pt 0pt 0pt 0pt"> <font style="font-size:8pt; font-family: Arial, Helvetica;"><u>International Equity Funds</u></font> </p> </td> <td colspan="1"> &#160; </td> <td colspan="1" width="8" valign="bottom" style="padding:6pt .7pt 0pt 0pt;"> &#160; </td> <td colspan="1" width="143" align="right" valign="bottom" style="padding:6pt .7pt 0pt 0pt;"> <p style="margin:0pt 0pt 0pt 0pt"> <font style="font-size:8pt; font-family: Arial, Helvetica;">0-50</font> </p> </td> <td colspan="1" width="22" align="left" valign="bottom" style="padding:6pt .7pt 0pt 0pt;"> <p style="margin:0pt 0pt 0pt 0pt; white-space:nowrap"> <font style="font-size:8pt; font-family: Arial, Helvetica;">%</font> </p> </td> <td colspan="1" width="8"> &#160; </td> </tr> <tr> <td colspan="3" width="186" align="left" valign="bottom" style="padding:6pt .7pt 4pt 0pt; background-color: #CCEEFF;"> <p style="margin:0pt 0pt 0pt 0pt"> <font style="font-size:8pt; font-family: Arial, Helvetica;"><u>Real Estate Funds</u></font> </p> </td> <td colspan="1" style="background-color: #CCEEFF;"> &#160; </td> <td colspan="1" width="8" valign="bottom" style="padding:6pt .7pt 4pt 0pt; background-color: #CCEEFF;"> &#160; </td> <td colspan="1" width="143" align="right" valign="bottom" style="padding:6pt .7pt 4pt 0pt; background-color: #CCEEFF;"> <p style="margin:0pt 0pt 0pt 0pt"> <font style="font-size:8pt; font-family: Arial, Helvetica;">0-50</font> </p> </td> <td colspan="1" width="22" align="left" valign="bottom" style="padding:6pt .7pt 4pt 0pt; background-color: #CCEEFF;"> <p style="margin:0pt 0pt 0pt 0pt; white-space:nowrap"> <font style="font-size:8pt; font-family: Arial, Helvetica;">%</font> </p> </td> <td colspan="1" width="8" style="background-color: #CCEEFF;"> &#160; </td> </tr> </table>falsefalsefalsenonnum:textBlockItemTypenaPrincipal 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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a false0Strategy Narrative [Text Block]17false 4rr_RiskHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Principal Risksfalsefalsefalsexbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 1 false0Risk [Heading]18false 4rr_RiskNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="margin: 0pt 0pt 6pt 0pt;" align="left"> <font style="font-size: 10pt; font-family: Arial, Helvetica;">The success of the Fund's investment strategy depends on SIMC's allocation of assets among the Underlying SEI Funds. In managing the Fund, SIMC may be incorrect in assessing market trends or the value or growth capability of particular asset classes. In addition, the methodology by which SIMC <font style="font-size: 10pt; font-family: Arial, Helvetica;">allocates the Fund's assets among the Underlying SEI Funds may not achieve desired results and may cause the Fund to lose money or underperform other comparable mutual funds.</font><br /> </font> </p> <br/><p style="margin:0pt 0pt 6pt 0pt;" align="left"> <font style="font-size:10pt; font-family: Arial, Helvetica;">The Underlying SEI Funds may apply any of a variety of investment strategies and may invest in a broad range of asset classes, securities and other investments to attempt to achieve their designated investment goals. The principal risks of the Fund's investments in the Underlying SEI Funds are set forth below.</font> </p> <br/><p style="margin:0pt 0pt 6pt 0pt;" align="left"> <font style="font-size:10pt; font-family: Arial, Helvetica;"><i>Asset Allocation Risk</i></font> <font style="font-size:10pt; font-family: Arial, Helvetica;">&#8212; The risk that SIMC's decisions regarding asset classes and Underlying SEI Funds will not anticipate market trends successfully.</font> </p> <br/><p style="margin:0pt 0pt 6pt 0pt;" align="left"> <font style="font-size:10pt; font-family: Arial, Helvetica;"><i>Below Investment Grade Securities (Junk Bonds) Risk</i></font> <font style="font-size:10pt; font-family: Arial, Helvetica;">&#8212; Fixed income securities rated below investment grade (junk bonds) involve greater risk of default or downgrade and are more volatile than investment grade securities because the prospect for repayment of principal and interest of many of these securities is speculative.</font> </p> <br/><p style="margin:0pt 0pt 6pt 0pt;" align="left"> <font style="font-size:10pt; font-family: Arial, Helvetica;"><i>Derivatives Risk</i></font> <font style="font-size:10pt; font-family: Arial, Helvetica;">&#8212; An Underlying SEI Fund's use of futures contracts, forward contracts, options and swaps is subject to market risk, leverage risk, correlation risk and liquidity risk. Market risk is the risk that the market value of an investment may move up and down, sometimes rapidly and unpredictably. Leverage risk is the risk that a small percentage of assets invested in a derivative can have a disproportionately larger impact on an Underlying SEI Fund. Correlation risk is the risk that changes in the value of a derivative instrument may not correlate perfectly with changes in the value of the derivative instrument's underlying asset, rate or index. Liquidity risk is the risk that the derivative may be difficult or impossible to sell at the time and the price that an Underlying SEI Fund would like, which may cause the Underlying SEI Fund to have to lower the selling price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on the Underlying SEI Fund's management or performance. An Underlying SEI Fund's use of swaps and over-the-counter forward contracts and options is also subject to credit risk and valuation risk. Credit risk is the risk that the issuer of a security or counterparty to a derivatives contract will default or otherwise become unable to honor its financial obligation to the Underlying SEI Fund under the contract. Valuation risk is the risk that the derivative may be difficult to value and/or valued incorrectly. Each of the above risks could cause an Underlying SEI Fund to lose more than the principal amount invested in a derivative instrument.</font> </p> <br/><p style="margin:0pt 0pt 6pt 0pt;" align="left"> <font style="font-size:10pt; font-family: Arial, Helvetica;"><i>Equity Market Risk</i></font> <font style="font-size:10pt; font-family: Arial, Helvetica;">&#8212; The risk that prices of stocks will fall over short or extended periods of time.</font> </p> <br/><p style="margin:0pt 0pt 6pt 0pt;" align="left"> <font style="font-size:10pt; font-family: Arial, Helvetica;"><i>Fixed Income Market Risk</i></font> <font style="font-size:10pt; font-family: Arial, Helvetica;">&#8212; The prices of 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.</font> </p> <br/><p style="margin:0pt 0pt 6pt 0pt;" align="left"> <font style="font-size:10pt; font-family: Arial, Helvetica;"><i>Foreign Investment/Emerging Markets Risk</i></font> <font style="font-size:10pt; font-family: Arial, Helvetica;">&#8212; 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.</font> </p> <br/><p style="margin: 0pt 0pt 6pt 0pt;" align="left"> <font style="font-size: 10pt; font-family: Arial, Helvetica;"><em>Investment Company Risk</em></font> <font style="font-size: 10pt; font-family: Arial, Helvetica;">&#8212; When the Fund or an Underlying SEI Fund invests in an investment company, in addition to directly bearing the expenses associated with its own operations, it will bear a <font style="font-size: 10pt; font-family: Arial, Helvetica;">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 or an Underlying SEI Fund had invested directly in the underlying investments.</font><br /> </font> </p> <br/><p style="margin:0pt 0pt 6pt 0pt;" align="left"> <font style="font-size:10pt; font-family: Arial, Helvetica;"><i>Real Estate Industry Risk</i></font> <font style="font-size:10pt; font-family: Arial, Helvetica;">&#8212; Securities of companies principally engaged in the real estate industry may be subject to the risks associated with the direct ownership of real estate, including 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.</font> </p> <br/><p style="margin:0pt 0pt 6pt 0pt;" align="left"> <font style="font-size:10pt; font-family: Arial, Helvetica;"><i>Short Sales Risk</i></font> <font style="font-size:10pt; font-family: Arial, Helvetica;">&#8212; A short sale involves the sale of a security that a fund does not own in the expectation of purchasing the same security (or a security exchangeable therefore) at a later date at a lower price. Short sales entered into by an Underlying SEI Fund expose the Fund to the risk that the Underlying SEI Fund will be required to buy a 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 Underlying SEI Fund and, therefore, the Fund. Reinvesting proceeds received from short selling may create leverage, which can amplify the effects of market volatility on the share price of an Underlying SEI Fund and, therefore, the Fund. Investment in short sales may also cause an Underlying SEI Fund to incur expenses related to borrowing securities.</font> </p> <br/><p style="margin:0pt 0pt 6pt 0pt;" align="left"> <font style="font-size:10pt; font-family: Arial, Helvetica;"><i>Small and Medium Capitalization Risk</i></font> <font style="font-size:10pt; font-family: Arial, Helvetica;">&#8212; Small and medium capitalization companies may be more vulnerable to adverse business or economic events than larger, more established companies. In particular, small and medium capitalization companies may have limited product lines, markets and financial resources and may depend upon a relatively small management group. Therefore, small and medium capitalization stocks may be more volatile than those of larger companies. Small and medium capitalization stocks may be traded over-the-counter or listed on an exchange.</font> </p> <br/><p style="margin:0pt 0pt 6pt 0pt;" align="left"> <font style="font-size:10pt; font-family: Arial, Helvetica;"><i>Strategy Risk</i></font> <font style="font-size:10pt; font-family: Arial, Helvetica;">&#8212; The Fund is intended to be used only as a part of the GoalLink Strategy and is not designed as a stand-alone investment. The overall investment risk to a shareholder is significantly different when not combined with recommended investments in SEI funds that invest primarily in municipal bonds as part of a GoalLink Strategy.</font> </p> <br/><p style="margin:0pt 0pt 6pt 0pt;" align="left"> <font style="font-size:10pt; font-family: Arial, Helvetica;"><i>Taxation Risk</i></font> <font style="font-size:10pt; font-family: Arial, Helvetica;">&#8212; The Fund is managed to minimize tax consequences to investors, but will likely earn taxable income and gains from time to time.</font> </p> <br/><p style="margin:0pt 0pt 6pt 0pt;" align="left"> <font style="font-size:10pt; font-family: Arial, Helvetica;">Loss of money is a risk of investing in the Fund.</font> </p>falsefalsefalsenonnum:textBlockItemTypenaNarrative 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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 1 -Subparagraph i -Clause instruction false0Risk Narrative [Text Block]19false 4rr_BarChartAndPerformanceTableHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Performance Informationfalsefalsefalsexbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 false0Bar Chart and Performance Table [Heading]20false 4rr_PerformanceNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="margin:0pt 0pt 6pt 0pt;" align="left"> <font style="font-size:10pt; font-family: Arial, Helvetica;">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 for the past nine calendar years 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.</font> </p>falsefalsefalsenonnum:textBlockItemTypenaRisk/Return Bar Chart and Table.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 false0Performance Narrative [Text Block]21false 4rr_BarChartTableTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00~ http://seic.com/20130729/role/ScheduleAnnualTotalReturnsBarChart20033 column dei_DocumentInformationDocumentAxis compact ck0001003632_doc_Class_A_ProspectusMember column dei_LegalEntityAxis compact ck0001003632_S000005818Member column rr_ProspectusShareClassAxis compact ck0001003632_C000015963Member row primary compact * ~falsefalseBarChart6.jpg~ http://seic.com/20130729/role/ScheduleAnnualTotalReturnsBarChart20033 column dei_DocumentInformationDocumentAxis compact ck0001003632_doc_Class_A_ProspectusMember column dei_LegalEntityAxis compact ck0001003632_S000005818Member column rr_ProspectusShareClassAxis compact ck0001003632_C000015963Member row primary compact * ~falsehttp://seic.com/20130729/role/ScheduleAnnualTotalReturnsBarChart20033020033 - Schedule - Annual Total Returns [Bar Chart]truefalsefalse1falseColumnperiodPeriod*Columndei_DocumentInformationDocumentAxisAxisck0001003632_doc_Class_A_ProspectusMemberColumndei_LegalEntityAxisAxisck0001003632_S000005818MemberColumnrr_ProspectusShareClassAxisAxisck0001003632_C000015963MemberColumnunitUnit*duration2013-03-31T00:00:002013-03-31T00:00:00falsefalseClass A Prospectusdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_doc_Class_A_ProspectusMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseSAAT MODERATE STRATEGY ALLOCATION FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_S000005818Memberdei_LegalEntityAxisexplicitMemberfalsefalseSAAT MODERATE STRATEGY ALLOCATION FUND - CLASS Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_C000015963Memberrr_ProspectusShareClassAxisexplicitMemberClass A ProspectusSAAT MODERATE STRATEGY ALLOCATION FUNDSAAT MODERATE STRATEGY ALLOCATION FUND - CLASS ApureStandardhttp://www.xbrl.org/2003/instancepurexbrli0Standard0 USDfalsefalseduration2013-03-31T00:00:002013-03-31T00:00:00$1falseRowprimaryElement*3false3false 4rr_AnnualReturn2004rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.09250.0925falsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false0Annual Return 2004 4rr_AnnualReturn2004rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false0Annual Return 2004 0rr_AnnualReturn2004rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.09250.0925falsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false0Annual Return 20042falseRowprimaryElement*4false4false 4rr_AnnualReturn2005rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.08000.0800falsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false0Annual Return 2005 4rr_AnnualReturn2005rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false0Annual Return 2005 0rr_AnnualReturn2005rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.08000.0800falsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false0Annual Return 20053falseRowprimaryElement*5false5false 4rr_AnnualReturn2006rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.16080.1608falsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false0Annual Return 2006 4rr_AnnualReturn2006rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false0Annual Return 2006 0rr_AnnualReturn2006rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.16080.1608falsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false0Annual Return 20064falseRowprimaryElement*6false6false 4rr_AnnualReturn2007rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.04070.0407falsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false0Annual Return 2007 4rr_AnnualReturn2007rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false0Annual Return 2007 0rr_AnnualReturn2007rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.04070.0407falsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false0Annual Return 20075falseRowprimaryElement*7false7false 4rr_AnnualReturn2008rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.3340-0.3340falsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false0Annual Return 2008 4rr_AnnualReturn2008rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false0Annual Return 2008 0rr_AnnualReturn2008rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.3340-0.3340falsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false0Annual Return 20086falseRowprimaryElement*8false8false 4rr_AnnualReturn2009rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.26650.2665falsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false0Annual Return 2009 4rr_AnnualReturn2009rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false0Annual Return 2009 0rr_AnnualReturn2009rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.26650.2665falsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false0Annual Return 20097falseRowprimaryElement*9false9false 4rr_AnnualReturn2010rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.16040.1604falsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false0Annual Return 2010 4rr_AnnualReturn2010rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false0Annual Return 2010 0rr_AnnualReturn2010rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.16040.1604falsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false0Annual Return 20108falseRowprimaryElement*10false10false 4rr_AnnualReturn2011rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05120.0512falsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false0Annual Return 2011 4rr_AnnualReturn2011rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false0Annual Return 2011 0rr_AnnualReturn2011rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05120.0512falsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a false0Annual Return 20119falseRowprimaryElement*11false11false 4rr_AnnualReturn2012rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14350.1435falsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false0Annual Return 2012 4rr_AnnualReturn2012rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false0Annual Return 2012 0rr_AnnualReturn2012rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14350.1435falsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false0Annual Return 2012falseAnnual Total Returns [Bar Chart] UnKnownUnKnownUnKnownUnKnownfalsefalsefalseSheet190819014ColumnperiodPeriod*Columndei_DocumentInformationDocumentAxisAxisck0001003632_doc_Class_A_ProspectusMemberColumndei_LegalEntityAxisAxisck0001003632_S000005818MemberColumnrr_ProspectusShareClassAxisAxisck0001003632_C000015963MemberColumnunitUnit*RowprimaryElement*falsenonnum:textBlockItemTypenaContains a command for the SEC Viewer for the role corresponding to BarChartData.No definition available.false0Bar Chart [Table]22false 4rr_BarChartClosingTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="margin:0pt 0pt 6pt 0pt;" align="left"> <font style="font-size:8pt; font-family: Arial, Helvetica;"><b>Best Quarter:</b></font> <font style="font-size:8pt; font-family: Arial, Helvetica;">16.93% (06/30/09)</font> </p> <br/><p style="margin:0pt 0pt 6pt 0pt;" align="left"> <font style="font-size:8pt; font-family: Arial, Helvetica;"><b>Worst Quarter:</b></font> <font style="font-size:8pt; font-family: Arial, Helvetica;">-22.21% (12/31/08)</font> </p> <br/><p style="margin:0pt 0pt 6pt 0pt;" align="left"> <font style="font-size:8pt; font-family: Arial, Helvetica;">The Fund's Class A total return (pre-tax) from January 1, 2013 to June 30, 2013 was 10.28%.</font> </p>falsefalsefalsenonnum:textBlockItemTypenaIf 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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph ii false0Bar Chart Closing [Text Block]23false 4rr_PerformanceTableHeadingrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Average Annual Total Returns (for the periods ended December 31, 2012) falsefalsefalsexbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c false0Performance Table Heading24false 4rr_PerformanceTableNarrativeTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="margin:0pt 0pt 6pt 0pt;" align="left"> <font style="font-size:10pt; font-family: Arial, Helvetica;">This table compares the Fund's average annual total returns for Class A Shares to those of a broad-based index and two additional indices: the Barclays Capital U.S. Aggregate Bond Index and the MSCI EAFE Index. The Barclays Capital U.S. Aggregate Bond Index and the MSCI EAFE Index, in conjunction with the broad-based index, are used to track the broad range of allocations the Fund makes to the Underlying SEI Funds, while each index individually only tracks one specific allocation of the Fund. The foregoing indices, when considered together, may provide investors with a useful comparison of the Fund's overall performance.</font> </p> <br/><p style="margin:0pt 0pt 6pt 0pt;" align="left"> <font style="font-size:10pt; font-family: Arial, Helvetica;">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.</font> </p> falsefalsefalsenonnum:textBlockItemTypenaIf 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 should show the returns of an appropriate broad-based 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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph iv false0Performance Table Narrative25false 4rr_PerformanceTableTextBlockrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00~ http://seic.com/20130729/role/ScheduleAverageAnnualReturnsTransposed20034 column dei_DocumentInformationDocumentAxis compact ck0001003632_doc_Class_A_ProspectusMember column dei_LegalEntityAxis compact ck0001003632_S000005818Member column rr_PerformanceMeasureAxis compact * row primary compact * ~falsefalse~ http://seic.com/20130729/role/ScheduleAverageAnnualReturnsTransposed20034 column dei_DocumentInformationDocumentAxis compact ck0001003632_doc_Class_A_ProspectusMember column dei_LegalEntityAxis compact ck0001003632_S000005818Member column rr_PerformanceMeasureAxis compact * row primary compact * ~truehttp://seic.com/20130729/role/ScheduleAverageAnnualReturnsTransposed20034020034 - Schedule - Average Annual Returns {Transposed}truefalsefalse1falseColumnprimaryElement*3false 4rr_AverageAnnualReturnLabelrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalselabelxbrli: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: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 false0Label USDfalsefalse$2falseColumnprimaryElement*4false 4rr_AverageAnnualReturnYear01rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabelxbrli:pureItemTypepureReturn Before Taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 false0Average Annual Returns, 1 Year USDfalsefalse$3falseColumnprimaryElement*5false 4rr_AverageAnnualReturnYear05rr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabelxbrli:pureItemTypepureReturn Before Taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 false0Average Annual Returns, 5 Years USDfalsefalse$4falseColumnprimaryElement*6false 4rr_AverageAnnualReturnSinceInceptionrr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabelxbrli:pureItemTypepureReturn Before Taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 false0Average Annual Returns, Since Inception USDfalsefalse$5falseColumnprimaryElement*7false 4rr_AverageAnnualReturnInceptionDaterr_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabelxbrli:dateItemTypedateReturn Before Taxes.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection b -Paragraph 2 -Subparagraph instructions -Clause 4 false0Average Annual Returns, Inception Date USDfalsefalse$1falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxisck0001003632_doc_Class_A_ProspectusMemberRowdei_LegalEntityAxisAxisck0001003632_S000005818MemberRowrr_PerformanceMeasureAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2013-03-31T00:00:002013-03-31T00:00:00falsefalseClass A Prospectusdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_doc_Class_A_ProspectusMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseSAAT MODERATE STRATEGY ALLOCATION FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_S000005818Memberdei_LegalEntityAxisexplicitMembertruefalse[PerformanceMeasureDomain]rr_PerformanceMeasureAxisrr_PerformanceMeasureDomainrr_PerformanceMeasureAxisexplicitMemberfalsefalseSAAT MODERATE STRATEGY ALLOCATION FUND - CLASS Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_C000015963Memberrr_ProspectusShareClassAxisexplicitMemberClass A ProspectusSAAT MODERATE STRATEGY ALLOCATION FUND[PerformanceMeasureDomain]SAAT MODERATE STRATEGY ALLOCATION FUND - CLASS ApureStandardhttp://www.xbrl.org/2003/instancepurexbrli0Standard0 0truefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Return Before Taxesfalsefalsefalse2truetruetrue0.14350.1435falsefalsefalse3truetruetrue0.03310.0331falsefalsefalse4truetruetrue0.06190.0619falsefalsefalse5falsetruefalse002003-11-17falsefalsetruenanafalse0SAAT MODERATE STRATEGY ALLOCATION FUND - CLASS A2falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxisck0001003632_doc_Class_A_ProspectusMemberRowdei_LegalEntityAxisAxisck0001003632_S000005818MemberRowrr_PerformanceMeasureAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2013-03-31T00:00:002013-03-31T00:00:00falsefalseClass A Prospectusdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_doc_Class_A_ProspectusMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseSAAT MODERATE STRATEGY ALLOCATION FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_S000005818Memberdei_LegalEntityAxisexplicitMemberfalsefalseAfter Taxes on Distributionsrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsMemberrr_PerformanceMeasureAxisexplicitMemberfalsefalseSAAT MODERATE STRATEGY ALLOCATION FUND - CLASS Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_C000015963Memberrr_ProspectusShareClassAxisexplicitMemberClass A ProspectusSAAT MODERATE STRATEGY ALLOCATION FUNDAfter Taxes on DistributionsSAAT MODERATE STRATEGY ALLOCATION FUND - CLASS ApureStandardhttp://www.xbrl.org/2003/instancepurexbrli0Standard0 0truefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Return After Taxes on Distributionsfalsefalsefalse2truetruetrue0.13680.1368falsefalsefalse3truetruetrue0.02430.0243falsefalsefalse4truetruetrue0.05230.0523falsefalsefalse5falsefalsefalse00falsefalsefalsenanafalse0After Taxes on Distributions SAAT MODERATE STRATEGY ALLOCATION FUND - CLASS A3falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxisck0001003632_doc_Class_A_ProspectusMemberRowdei_LegalEntityAxisAxisck0001003632_S000005818MemberRowrr_PerformanceMeasureAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2013-03-31T00:00:002013-03-31T00:00:00falsefalseClass A Prospectusdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_doc_Class_A_ProspectusMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseSAAT MODERATE STRATEGY ALLOCATION FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_S000005818Memberdei_LegalEntityAxisexplicitMemberfalsefalseAfter Taxes on Distributions and Sale of Fund Sharesrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsAndSalesMemberrr_PerformanceMeasureAxisexplicitMemberfalsefalseSAAT MODERATE STRATEGY ALLOCATION FUND - CLASS Arr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_C000015963Memberrr_ProspectusShareClassAxisexplicitMemberClass A ProspectusSAAT MODERATE STRATEGY ALLOCATION FUNDAfter Taxes on Distributions and Sale of Fund SharesSAAT MODERATE STRATEGY ALLOCATION FUND - CLASS ApureStandardhttp://www.xbrl.org/2003/instancepurexbrli0Standard0 0truefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Return After Taxes on Distributions and Sale of Fund Sharesfalsefalsefalse2truetruetrue0.09600.0960falsefalsefalse3truetruetrue0.02340.0234falsefalsefalse4truetruetrue0.04270.0427falsefalsefalse5falsefalsefalse00falsefalsefalsenanafalse0After Taxes on Distributions and Sale of Fund Shares SAAT MODERATE STRATEGY ALLOCATION FUND - CLASS A4falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxisck0001003632_doc_Class_A_ProspectusMemberRowdei_LegalEntityAxisAxisck0001003632_S000005818MemberRowrr_PerformanceMeasureAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2013-03-31T00:00:002013-03-31T00:00:00falsefalseClass A Prospectusdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_doc_Class_A_ProspectusMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseSAAT MODERATE STRATEGY ALLOCATION FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_S000005818Memberdei_LegalEntityAxisexplicitMemberfalsefalseS&P 500 Index Return (reflects no deduction for fees, expenses or taxes)rr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_index_SP_500_Index_Return_reflects_no_deduction_for_fees_expenses_or_taxesMemberrr_PerformanceMeasureAxisexplicitMembertruefalse[ShareClassDomain]rr_ProspectusShareClassAxisrr_ShareClassDomainrr_ProspectusShareClassAxisexplicitMemberClass A ProspectusSAAT MODERATE STRATEGY ALLOCATION FUNDS&P 500 Index Return (reflects no deduction for fees, expenses or taxes)[ShareClassDomain]pureStandardhttp://www.xbrl.org/2003/instancepurexbrli0Standard0 0truefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00S&P 500 Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalse2truetruetrue0.16000.1600falsefalsefalse3truetruetrue0.01660.0166falsefalsefalse4truetruetrue0.05480.0548[1]falsefalsefalse5falsetruefalse002003-11-30falsefalsetruenanafalse0S&P 500 Index Return (reflects no deduction for fees, expenses or taxes)5falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxisck0001003632_doc_Class_A_ProspectusMemberRowdei_LegalEntityAxisAxisck0001003632_S000005818MemberRowrr_PerformanceMeasureAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2013-03-31T00:00:002013-03-31T00:00:00falsefalseClass A Prospectusdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_doc_Class_A_ProspectusMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseSAAT MODERATE STRATEGY ALLOCATION FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_S000005818Memberdei_LegalEntityAxisexplicitMemberfalsefalseBarclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)rr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_index_Barclays_Capital_US_Aggregate_Bond_Index_Return_reflects_no_deduction_for_fees_expenses_or_taxesMemberrr_PerformanceMeasureAxisexplicitMembertruefalse[ShareClassDomain]rr_ProspectusShareClassAxisrr_ShareClassDomainrr_ProspectusShareClassAxisexplicitMemberClass A ProspectusSAAT MODERATE STRATEGY ALLOCATION FUNDBarclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)[ShareClassDomain]pureStandardhttp://www.xbrl.org/2003/instancepurexbrli0Standard0 0truefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalse2truetruetrue0.04210.0421falsefalsefalse3truetruetrue0.05950.0595falsefalsefalse4truetruetrue0.05370.0537[1]falsefalsefalse5falsetruefalse002003-11-30falsefalsetruenanafalse0Barclays Capital U.S. Aggregate Bond Index Return (reflects no deduction for fees, expenses or taxes)6falseRowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxisck0001003632_doc_Class_A_ProspectusMemberRowdei_LegalEntityAxisAxisck0001003632_S000005818MemberRowrr_PerformanceMeasureAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2013-03-31T00:00:002013-03-31T00:00:00falsefalseClass A Prospectusdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_doc_Class_A_ProspectusMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseSAAT MODERATE STRATEGY ALLOCATION FUNDdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_S000005818Memberdei_LegalEntityAxisexplicitMemberfalsefalseMSCI EAFE Index Return (reflects no deduction for fees, expenses or taxes)rr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldick0001003632_index_MSCI_EAFE_Index_Return_reflects_no_deduction_for_fees_expenses_or_taxesMemberrr_PerformanceMeasureAxisexplicitMembertruefalse[ShareClassDomain]rr_ProspectusShareClassAxisrr_ShareClassDomainrr_ProspectusShareClassAxisexplicitMemberClass A ProspectusSAAT MODERATE STRATEGY ALLOCATION FUNDMSCI EAFE Index Return (reflects no deduction for fees, expenses or taxes)[ShareClassDomain]pureStandardhttp://www.xbrl.org/2003/instancepurexbrli0Standard0 0truefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse00MSCI EAFE Index Return (reflects no deduction for fees, expenses or taxes)falsefalsefalse2truetruetrue0.17320.1732falsefalsefalse3truetruetrue-0.0369-0.0369falsefalsefalse4truetruetrue0.06110.0611[1]falsefalsefalse5falsetruefalse002003-11-30falsefalsetruenanafalse0MSCI EAFE Index Return (reflects no deduction for fees, expenses or taxes)1Index returns are shown from November 30, 2003.falseAverage Annual Returns Class A Prospectus SAAT MODERATE STRATEGY ALLOCATION FUNDUnKnownUnKnownUnKnownUnKnownfalsefalsefalseSheet562425560110ColumnprimaryElement*RowperiodPeriod*Rowdei_DocumentInformationDocumentAxisAxisck0001003632_doc_Class_A_ProspectusMemberRowdei_LegalEntityAxisAxisck0001003632_S000005818MemberRowrr_PerformanceMeasureAxisAxis*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsenonnum:textBlockItemTypenaContains a command for the SEC Viewer for the role corresponding to PerformanceTableData.No definition available.false0Performance [Table]falseRisk/Return Summary - Class A Prospectus - SAAT MODERATE STRATEGY ALLOCATION FUND (Class A Prospectus, SAAT MODERATE STRATEGY ALLOCATION FUND)UnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://seic.com/20130729/role/DocumentRiskReturnSummaryUnlabeledClassAProspectusSAATMODERATESTRATEGYALLOCATIONFUND125