2.2.0.25truefalse040000 - Disclosure - Risk/Return Detail Data {Elements}truetruefalse1falsefalsefalsefalse5/1/2011 - 5/1/2011 wvithttp://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00RatioStandardhttp://www.xbrl.org/2003/instancepure0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso421702true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:3false0dei_DocumentTypedeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00485BPOSfalsefalsefalsefalsefalseOtherus-types:SECReportItemTypenaThe type of document being provided (such as 10-K, 10-Q, N-1A, etc). The document type should be limited to the same value as the supporting SEC submission type. The acceptable values are as follows: S-1, S-3, S-4, S-11, F-1, F-3, F-4, F-9, F-10, 6-K, 8-K, 10, 10-K, 10-Q, 20-F, 40-F, N-1A, 485BPOS, NCSR, N-Q, and Other.No authoritative reference available.falsefalseDocument Type4false0dei_DocumentPeriodEndDatedeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002010-12-31falsefalsetruefalsefalseOtherxbrli:dateItemTypedateThe end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements this will be the filing date. The format of the date is CCYY-MM-DD.No authoritative reference available.falsefalsePeriod End Date5false0dei_EntityRegistrantNamedeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00WILSHIRE VARIABLE INSURANCE TRUSTfalsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringThe exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation 12B -Number 240 -Section 12b -Subsection 1 falsefalseRegistrant Name6false0dei_EntityCentralIndexKeydeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse000001026708falsefalsefalsefalsefalseOtherus-types:centralIndexKeyItemTypenaA unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation 12B -Number 240 -Section 12b -Subsection 1 falsefalseCIK7false0dei_AmendmentFlagdeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalsefalseOtherxbrli:booleanItemTypenaIf the value is true, then the document as an amendment to previously-filed/accepted document.No authoritative reference available.falsefalseAmendment8false0dei_DocumentCreationDatedeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002011-04-29falsefalsetruefalsefalseOtherxbrli:dateItemTypedateThe date the document was made available and submitted, in CCYY-MM-DD format. The date of submission, date of acceptance by the recipient, and the document effective date are all potentially different.No authoritative reference available.falsefalseCreation Date9false0dei_DocumentEffectiveDatedeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002011-05-01falsefalsetruefalsefalseOtherxbrli:dateItemTypedateThe date when a document, upon receipt and acceptance, becomes officially effective, in CCYY-MM-DD format. Usually it is a system-assigned date time value, but it may be declared by the submitter in some cases.No authoritative reference available.falsefalseEffective Date10false0rr_ProspectusDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002011-05-01falsefalsetruefalsefalseOtherxbrli:dateItemTypedateThe date of the prospectus.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 1 -Paragraph 3 -Subsection a falsefalseProspectus Date11false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsetruefalse{dei_LegalEntityAxis} : Wilshire VIT Equity Fund 5/1/2011 - 5/1/2011 wvit_S000001039http://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire VIT Equity Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000001039Memberdei_LegalEntityAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseWilshire VIT Equity Fund12true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:13false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 14pt Times New Roman, Times, Serif; margin: 0; text-align: center"><b>FUND SUMMARIES</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center">&nbsp;</p> <p style="font: 14pt Times New Roman, Times, Serif; margin: 0; text-align: center"><b>Equity Fund</b></p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return14false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Investment Objective</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective:15false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The Equity Fund (the &ldquo;Fund&rdquo;) seeks long-term capital growth.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective16false0rr_ObjectiveSecondaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">As a secondary objective, the Equity Fund seeks conservation of principal and production of income.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseSecondary objectives17false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Fees and Expenses of the Equity Fund</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseFees and expenses of the fund:18false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">This table describes the fees and expenses that you may pay if you buy and hold shares of the Equity Fund. The table below does not reflect expenses that apply to separate accounts or related annuity contracts, and if such expenses were reflected, fees would be higher.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseFees and expenses of the fund, narrative19false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Annual Fund Operating Expenses*</b> (expenses that you pay each year as a percentage of the value of your investment):</p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseAnnual fund operating expenses, heading20false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Portfolio Turnover</b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio turnover, heading21false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The Equity Fund pays transaction costs, such as commissions, when it buys and sells securities (or &ldquo;turns over&rdquo; 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 Equity Fund&rsquo;s performance. During the most recent fiscal year, the Equity Fund&rsquo;s portfolio turnover rate was 81% of the average value of its portfolio.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio turnover, narrative22false0rr_PortfolioTurnoverRaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.810.81falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureThis element represents the rate of portfolio turnover presented as a percentage (SEC Form N-1A 2006-09-14 A.3.example.3 Portfolio Turnover A.3.instructions.5 Portfolio Turnover).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover Rate23false0rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFeesrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Equity Fund's shareholders indirectly bear, pro rata, the expenses of the Fund's assets invested in the Wilshire Large Cap Core Plus Fund. The Management Fee charged to the Equity Fund (0.70%) is based on the average daily net assets of the Equity Fund that are not invested in the Large Cap Core Plus Fund. Accordingly, the Management Fee shown in the table is based on the Equity Fund's target allocation (45%) of assets invested in the Large Cap Core Plus Fund. The Equity Fund's investments in the Large Cap Core Plus Fund are not reflected in the Equity Fund's expense ratio as shown in the Financial Highlights table of this Prospectus.falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThe Fund may clarify in a footnote to the fee table that the total annual fund operating expenses under Item 3 do not correlate to the ratio of expenses to average net assets given in response to Item 8, which reflects the operating expenses of the Fund and does not include Acquired Fund fees and expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph f -Clause vii -Subsection instructions falsefalseExpenses Not Correlated to Ratio Due to Acquired Fund Fees24false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 24px"> <font style="font-size: 11pt">*</font></td> <td> <font style="font-size: 11pt">The Equity Fund&rsquo;s shareholders indirectly bear, pro rata, the expenses of the Fund&rsquo;s assets invested in the Wilshire Large Cap Core Plus Fund. The Management Fee charged to the Equity Fund (0.70%) is based on the average daily net assets of the Equity Fund that are not invested in the Large Cap Core Plus Fund. Accordingly, the Management Fee shown in the table is based on the Equity Fund&rsquo;s target allocation (45%) of assets invested in the Large Cap Core Plus Fund. The Equity Fund&rsquo;s investments in the Large Cap Core Plus Fund are not reflected in the Equity Fund&rsquo;s expense ratio as shown in the Financial Highlights table of this Prospectus.</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Example: </b>This example is intended to help you compare the cost of investing in the Equity Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 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 Equity Fund&rsquo;s operating expenses remain the same. The example does not reflect expenses that apply to separate accounts or related annuity contracts, and if such expenses were reflected, fees would be higher. Although your actual costs may be higher or lower, based on these assumptions your costs would be:</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative25false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Principal Investment Strategies</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy, Heading26false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The Equity Fund invests, under normal circumstances, at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in equity securities. The Equity Fund ordinarily invests in common stocks of domestic companies and in other affiliated and non-affiliated equity investment companies, including the Wilshire Large Cap Core Plus Fund (the &ldquo;Large Cap Core Plus Fund&rdquo;) (formerly, the Wilshire Large Cap Core 130/30 Fund). The Equity Fund expects to invest 45% of its assets in the Large Cap Core Plus Fund. The operating companies in which the Equity Fund invests vary in size and operating history, they may or may not be listed on a stock exchange and they may be in any industry. On average, the Equity Fund will have a value-bias, generally exhibiting an average price to earnings ratio lower than, and an average dividend yield higher than, that of the market as measured by the S&amp;P 500 Index. Included within the definition of &ldquo;domestic companies&rdquo; are companies that are not incorporated in the U.S. but have one or more of the following attributes: principal place of business in the U.S.; substantial portion of income derived from activities in the U.S.; equity securities traded on a major U.S. stock exchange or included in a recognized index of U.S. stocks; or financial statements that comply with U.S. accounting standards. Thus, securities of such issuers are not subject to the 10% limitation on securities of foreign issuers.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The Equity Fund uses a multi-manager strategy with sub-advisers who may employ different strategies. Madison Square Investors, LLC (&ldquo;Madison Square&rdquo;) and Victory Capital Management Inc. (&ldquo;Victory&rdquo;) each manage a portion of the Equity Fund&rsquo;s portfolio. Madison Square uses a quantative process to identify companies that are considered to have a high probability of outperforming the S&amp;P 500 Index based on fundamental factors such as valuation and earnings. Victory manages its portion of the Equity Fund by pursuing a blended investment strategy (large cap core) to produce a higher return with less risk.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">For the Large Cap Core Plus Fund, the following describes the types of securities in which the Large Cap Core Plus Fund is permitted to invest:</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 24px">&nbsp;</td> <td style="width: 24px"> <font style="font-size: 11pt">&bull;</font></td> <td> <font style="font-size: 11pt">The Large Cap Core Plus Fund normally invests at least 85% of its net assets in large cap securities. Large cap securities include securities of those companies with market capitalizations consistent with the Russell 1000 Index&mdash;greater than approximately $232 million as of December 31, 2010.</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 24px">&nbsp;</td> <td style="width: 24px"> <font style="font-size: 11pt">&bull;</font></td> <td> <font style="font-size: 11pt">The Large Cap Core Plus Fund invests substantially all its assets in growth and value stocks of large cap companies.</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 24px">&nbsp;</td> <td style="width: 24px"> <font style="font-size: 11pt">&bull;</font></td> <td> <font style="font-size: 11pt">Each Large Cap Core Plus Fund sub-adviser will take long positions in securities it believes has the ability to outperform the Russell 1000 Index and will sell short securities it believes are likely to underperform.</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 24px">&nbsp;</td> <td style="width: 24px"> <font style="font-size: 11pt">&bull;</font></td> <td> <font style="font-size: 11pt">The Large Cap Core Plus Fund will generally hold approximately 30% of its net assets in short positions, using the proceeds from the short sales to purchase additional long positions resulting in a portfolio with 130% of net assets in long positions. The Large Cap Core Plus Fund&rsquo;s long positions may range from 120% to 140% and its short positions may range from 20% to 40%.</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 24px">&nbsp;</td> <td style="width: 24px"> <font style="font-size: 11pt">&bull;</font></td> <td> <font style="font-size: 11pt">The Large Cap Core Plus Fund&rsquo;s equity investments principally include common stocks, but may also include preferred stocks, convertible securities, warrants and securities issued by real estate investment trusts (&ldquo;REITs&rdquo;). The Large Cap Core Plus Fund also may invest in exchange-traded funds (&ldquo;ETFs&rdquo;) and similarly structured pooled investments in order to provide exposure to certain equity markets while maintaining liquidity. The Large Cap Core Plus Fund also may engage in short sales of ETFs and similarly structured pooled investments.</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 24px">&nbsp;</td> <td style="width: 24px"> <font style="font-size: 11pt">&bull;</font></td> <td> <font style="font-size: 11pt">The Large Cap Core Plus Fund may, but is not required to, use derivatives, such as futures, options, forward contracts, swap agreements and ETFs, as an alternative to selling a security short, as a substitute for investing directly in an underlying asset, to increase returns, to manage foreign currency risk, or as part of a hedging strategy.</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 24px">&nbsp;</td> <td style="width: 24px"> <font style="font-size: 11pt">&bull;</font></td> <td> <font style="font-size: 11pt">The Large Cap Core Plus Fund uses a multi-manager strategy with multiple sub-advisers who employ different strategies.</font></td></tr> </table> falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy, Narrative27false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Principal Risks</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk, Heading28false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">You may lose money by investing in the Equity Fund. In addition, investing in the Equity Fund involves the following principal risks:</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Equity Risk. </i>The principal risk of investing in the Equity Fund is equity risk. This is the risk that the prices of stocks held by the Equity Fund will change due to general market and economic conditions, perceptions regarding the industries in which the companies participate, and each company&rsquo;s particular circumstances. Equity investments, including common stocks, tend to be more volatile than bonds and money market instruments. The value of the Equity Fund&rsquo;s shares will go up and down due to movement in the collective returns of the individual securities held by the Equity Fund. Because common stocks are subordinate to preferred stocks in a company&rsquo;s capital structure, in a company liquidation, the claims of secured and unsecured creditors and owners of bonds and preferred stocks take precedence over the claims of common stock shareholders.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Market Risk. </i>For equity securities, stock market movements will affect the Equity Fund&rsquo;s share price on a daily basis. Declines in value are possible because of declines in the stock market in general or because of a decline in the specific securities held by the Equity Fund. There is also the possibility that the price of the security will fall because the market perceives that there is or will be a deterioration in the fundamental value of the issuer or poor earnings performance by the issuer. Market risk may affect a single company, industry, sector or the market as a whole. For debt securities, the market value of a security may move up and down, sometimes rapidly and unpredictably. Market risk may affect a single issuer, an industry, a sector or the bond market as a whole.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Recent Market Events Risk</i>. The equity and debt capital markets in the U.S. and elsewhere have experienced unprecedented volatility in the past several years. This financial crisis had caused a significant decline in the value and liquidity of many securities and may create a higher degree of volatility in the net asset values of many mutual funds, including the Fund. Because these events are unprecedented, it is difficult to predict their magnitude or duration.&nbsp;&nbsp;Changes in market conditions will not have the same impact on all types of securities.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">In response to the crisis, the U.S. Government and the Federal Reserve have taken steps to support financial markets. The withdrawal of this support could negatively impact the value of and liquidation of certain securities. In addition, legislation recently enacted in the U.S. calls for changes in many aspects of financial regulation. The impact of the legislation on the markets, and the practical implications for market participants, may not be fully known for some time.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Multi-Managed Fund Risk.</i> The Equity Fund is a multi-managed fund with multiple sub-advisers who employ different strategies. As a result, the Equity Fund may have buy and sell transactions in the same security on the same day.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Asset Allocation Risk.</i> Although asset allocation among different asset categories and investment strategies generally reduces risk and exposure to any one category or strategy, the risk remains that the Adviser may favor an asset category or investment strategy that performs poorly relative to other asset categories and investment strategies.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Investment Style Risk. </i>During certain market conditions, a fund with a more specific investment style (such as value or growth) may perform less well than a Fund that allows greater flexibility in the investment of assets.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Foreign Investment Risk. </i>Foreign investments often involve risks such as political instability, differences in financial reporting standards and less stringent regulation of securities markets. These risks are magnified in less-established, emerging markets.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Preferred Stock Risk. </i>Preferred stocks are typically subordinated to bonds and other debt instruments in a company&rsquo;s capital structure, in terms of priority to corporate income, and therefore will be subject to greater credit risk than payments on debt securities. Unlike interest payments on debt securities, preferred stock dividends are payable only if declared by the issuer&rsquo;s board of directors. Preferred stock also may be subject to optional or mandatory redemption provisions.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Convertible Securities Risk. </i>Convertible securities are fixed income securities that may be converted at a stated price within a specific period of time into a certain quantity of common stock of the same or a different issuer. As with all fixed income securities, the market values of convertible securities tend to decline as interest rates increase and increase as interest rates decline. Convertible securities are senior to common stocks in an issuer&rsquo;s capital structure, but are usually subordinated to similar non-convertible securities.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">By investing in the Equity Fund, an investor also assumes the same type of risks, either indirectly or directly, as investing in the Large Cap Core Plus Fund. For the Large Cap Core Plus Fund, such risks include &ldquo;Equity Risk,&rdquo; &ldquo;Multi-Managed Fund Risk&rdquo; and &ldquo;Recent Market Events Risk&rdquo; as described above, and the following other risks:</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Short Sale Risk. </i>Short sales involve costs and risk. If a security sold short increases in price, the Large Cap Core Plus Fund may need to cover its short position at a higher price than the short sale price, resulting in a loss. The Large Cap Core Plus Fund will have substantial short positions and must borrow those securities to make delivery to the buyer. The Large Cap Core Plus Fund may not be able to borrow a security that it needs to deliver or it may not be able to close out a short position at an acceptable price and may need to sell related long positions before it had intended to do so. As a result, the Large Cap Core Plus Fund may not be able to successfully implement its short sale strategy due to the limited availability of desired securities or for other reasons and the amount the Large Cap Core Plus Fund could lose on a short sale is theoretically unlimited.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Portfolio Turnover Risk</i>. A fund that trades aggressively will experience high portfolio turnover and relatively high brokerage and other transaction costs. Such transaction costs may lower a fund&rsquo;s effective investment return.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Derivatives Risk. </i>The Large Cap Core Plus Fund may use derivative instruments, such as options, futures and options on futures (including those relating to stocks, indexes and foreign currencies), swaps and forward contracts. A small investment in derivatives could have a potentially large impact on the Large Cap Core Plus Fund&rsquo;s investment performance. The use of derivatives involves risks different from, or possibly greater than, the risks associated with investing directly in the underlying assets. Derivatives can be highly volatile, illiquid and difficult to value, and there is the risk that changes in the value of a derivative held by the Large Cap Core Plus Fund will not correlate with the underlying instruments or the Large Cap Core Plus Fund&rsquo;s other investments. Derivative instruments also involve the risk that a loss may be sustained as a result of the failure of the counterparty to the derivative instruments to make required payments or otherwise comply with the derivative instruments&rsquo; terms.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">Additionally, some derivatives the Large Cap Core Plus Fund may use involve leverage (e.g., an instrument linked to the value of a securities index may return income calculated as a multiple of the price movement of the underlying index). This economic leverage will increase the volatility of these instruments, as they may increase or decrease in value more quickly than the underlying security, index, futures contract, or other economic variable. The Large Cap Core Plus Fund may be required to segregate permissible liquid assets to cover its obligations relating to its purchase of derivative instruments.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>ETF Risk. </i>ETFs in which the Large Cap Core Plus Fund may invest involve certain inherent risks generally associated with investments in a portfolio of common stocks, including the risk that the general level of stock prices may decline, thereby adversely affecting the value of each unit of the ETF. Moreover, an ETF may not fully replicate the performance of its benchmark index because of the temporary unavailability of certain index securities in the secondary market or discrepancies between the ETF and the index with respect to the weighting of securities or the number of stocks held. Investing in ETFs, which are investment companies, may involve duplication of advisory fees and certain other expenses.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Real Estate Investment Trust Risk. </i>The Large Cap Core Plus Fund may invest in REITs, which carry with them many of the risks associated with direct ownership of real estate, including decline in property values, extended vacancies, increases in property taxes, and changes in interest rates. In addition, REITs are dependent upon management skills, may not be diversified, and may experience substantial cost in the event of borrower or lessee defaults. REITs are also subject to heavy cash flow dependency.</p> falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk, Narrative29false0rr_RiskLoseMoneyrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00You may lose money by investing in the Equity Fund.falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringSummarize the principal risks of investing in the Fund, including the risks to which the Fund's portfolio as a whole is subject and the circumstances reasonably likely to affect adversely the Fund's net asset value, yield, and total return. Unless the Fund is a Money Market Fund, disclose that loss of money is a risk of investing in the Fund. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Subsection b falsefalseMay Lose Money30false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Performance</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table, Heading31false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The information below provides an illustration of how the Equity Fund&rsquo;s performance has varied over time. The bar chart and table provide some indication of the risks of investing in the Equity Fund by showing the changes in the Equity Fund&rsquo;s investment performance from year to year during the periods indicated and by showing how the average annual total returns for the one-, five- and ten-year periods compare with a broad-based securities market index. The total return figures do not reflect expenses that apply to the separate account or related annuity contracts. The inclusion of these charges would reduce the total return figures for all periods shown. The Equity Fund&rsquo;s past investment performance does not necessarily indicate how it will perform in the future.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance, Narrative32false0rr_PerformanceInformationIllustratesVariabilityOfReturnsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The information below provides an illustration of how the Equity Fund's performance has varied over time.falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInclude the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance, Information Illustrates Variability of Returns33false0rr_PerformancePastDoesNotIndicateFuturerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Equity Fund's past investment performance does not necessarily indicate how it will perform in the future.falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInclude the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance, Past Does Not Indicate Future34false0rr_BarChartHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center"><b>Calendar Year Returns</b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart, Heading35false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">During the periods shown in the bar chart, the highest return for a quarter was 15.72% (quarter ended 06/30/03) and the lowest return for a quarter was -22.46% (quarter ended 12/31/08).</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart, Closing36false0rr_HighestQuarterlyReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00highest return for a quarterfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return, Label37false0rr_BarChartHighestQuarterlyReturnDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002003-06-30falsefalsetruefalsefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return Date38false0rr_BarChartHighestQuarterlyReturnrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.15720.1572falsefalsefalsefalsefalseOtherxbrli: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.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return39false0rr_LowestQuarterlyReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00lowest return for a quarterfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return, Label40false0rr_BarChartLowestQuarterlyReturnDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002008-12-31falsefalsetruefalsefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return Date41false0rr_BarChartLowestQuarterlyReturnrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2246-0.2246falsefalsefalsefalsefalseOtherxbrli: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.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return42false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Average Annual Total Returns</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>(periods ended December 31, 2010)</b></p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalsePerformance Table:43false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse3falsefalseUSDtruefalse{dei_LegalEntityAxis} : Wilshire VIT Equity Fund {rr_ProspectusShareClassAxis} : Wilshire VIT Equity Fund Shares 5/1/2011 - 5/1/2011 USD ($) $wvit_S000001039_C000002799http://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire VIT Equity Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000001039Memberdei_LegalEntityAxisexplicitMemberfalsefalseWilshire VIT Equity Fund Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_C000002799Memberrr_ProspectusShareClassAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseWilshire VIT Equity Fund | Wilshire VIT Equity Fund Shares44true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:45false0dei_TradingSymboldeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00HORMXfalsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No authoritative reference available.falsefalseTrading Symbol46false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00380.0038falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement Fees47false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution and Service (12b-1) Fees48false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.0020.002falsefalsefalsefalsefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther Expenses49false0rr_AcquiredFundFeesAndExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00680.0068falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseAcquired Fund Fees and Expenses50false0rr_NetExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01510.0151falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseTotal Annual Fund Operating Expenses51false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue154154falsetruefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, 1 YEAR52false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue477477falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, 3 YEARS53false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue824824falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, 5 YEARS54false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue18021802falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, 10 YEARS55false0rr_AnnualReturn2001rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.0421-0.0421falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse200156false0rr_AnnualReturn2002rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.1941-0.1941falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse200257false0rr_AnnualReturn2003rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.27550.2755falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse200358false0rr_AnnualReturn2004rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.10150.1015falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse200459false0rr_AnnualReturn2005rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.0590.059falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse200560false0rr_AnnualReturn2006rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.16920.1692falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse200661false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.0220.022falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse200762false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.4019-0.4019falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse200863false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.23570.2357falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse200964false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.11580.1158falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse201065false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.11580.1158falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse1 Year66false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue-0.0029-0.0029falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse5 Years67false0rr_AverageAnnualReturnYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01250.0125falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse10 Years68false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse4falsefalsetruefalse{dei_LegalEntityAxis} : Wilshire VIT Equity Fund {rr_PerformanceMeasureAxis} : S&P 500 Index (reflects no deduction for fees, expenses or taxes) 5/1/2011 - 5/1/2011 wvit_S000001039_snp500ehttp://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire VIT Equity Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000001039Memberdei_LegalEntityAxisexplicitMemberfalsefalseS&P 500 Index (reflects no deduction for fees, expenses or taxes)rr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_snp500eMemberrr_PerformanceMeasureAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseWilshire VIT Equity Fund | S&P 500 Index (reflects no deduction for fees, expenses or taxes)69true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:70false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.15060.1506falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse1 Year71false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.02290.0229falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse5 Years72false0rr_AverageAnnualReturnYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01410.0141falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse10 Years73false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse5falsefalsetruefalse{dei_LegalEntityAxis} : Wilshire VIT Balanced Fund 5/1/2011 - 5/1/2011 wvit_S000001038http://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire VIT Balanced Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000001038Memberdei_LegalEntityAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseWilshire VIT Balanced Fund74true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:75false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 14pt Times New Roman, Times, Serif; margin: 0; text-align: center"><b>Balanced Fund</b></p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return76false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Investment Objective</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective:77false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The Balanced Fund (the &ldquo;Fund&rdquo;) seeks to realize a high long-term total rate of return consistent with prudent investment risks. Total rate of return consists of current income, which includes dividends, interest, discount accruals and capital appreciation.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective78false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Fees and Expenses of the Balanced Fund</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseFees and expenses of the fund:79false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">This table describes the fees and expenses that you may pay if you buy and hold shares of the Balanced Fund. The table below does not reflect expenses that apply to separate accounts or related annuity contracts, and if such expenses were reflected, fees would be higher.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseFees and expenses of the fund, narrative80false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Annual Fund Operating Expenses*</b> (expenses that you pay each year as a percentage of the value of your investment):</p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseAnnual fund operating expenses, heading81false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Portfolio Turnover</b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio turnover, heading82false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The Balanced Fund pays transaction costs, such as commissions, when it buys and sells securities (or &ldquo;turns over&rdquo; 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 Balanced Fund&rsquo;s performance. During the most recent fiscal year, the Balanced Fund&rsquo;s portfolio turnover rate was 12% of the average value of its portfolio.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio turnover, narrative83false0rr_PortfolioTurnoverRaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.120.12falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureThis element represents the rate of portfolio turnover presented as a percentage (SEC Form N-1A 2006-09-14 A.3.example.3 Portfolio Turnover A.3.instructions.5 Portfolio Turnover).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover Rate84false0rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFeesrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Balanced Fund's shareholders indirectly bear, pro rata, the expenses of the Income Fund and Large Cap Core Plus Fund. These indirect expenses are based on actual expense ratios for the Income Fund and Large Cap Core Plus Fund. The Income Fund and Large Cap Core Plus Fund's fees and expenses are not reflected in the Balanced Fund's expense ratio as shown in the Financial Highlights table of this prospectus.falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThe Fund may clarify in a footnote to the fee table that the total annual fund operating expenses under Item 3 do not correlate to the ratio of expenses to average net assets given in response to Item 8, which reflects the operating expenses of the Fund and does not include Acquired Fund fees and expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph f -Clause vii -Subsection instructions falsefalseExpenses Not Correlated to Ratio Due to Acquired Fund Fees85false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 24px"> <font style="font-size: 11pt">*</font></td> <td> <font style="font-size: 11pt">The Balanced Fund&rsquo;s shareholders indirectly bear, pro rata, the expenses of the Income Fund and Large Cap Core Plus Fund. These indirect expenses are based on actual expense ratios for the Income Fund and Large Cap Core Plus Fund. The Income Fund and Large Cap Core Plus Fund&rsquo;s fees and expenses are not reflected in the Balanced Fund&rsquo;s expense ratio as shown in the Financial Highlights table of this prospectus.</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Example:</b> This example is intended to help you compare the cost of investing in the Balanced Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 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 Balanced Fund&rsquo;s operating expenses remain the same. The example does not reflect expenses that apply to separate accounts or related annuity contracts, and if such expenses were reflected, fees would be higher. Although your actual costs may be higher or lower, based on these assumptions your costs would be:</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative86false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Principal Investment Strategies</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy, Heading87false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The Balanced Fund operates under a fund of funds structure. The Balanced Fund invests substantially all of its assets in the Income Fund and the Wilshire Large Cap Core Plus Fund (the &ldquo;Large Cap Core Plus Fund&rdquo;) (formerly, the Wilshire Large Cap Core 130/30 Fund). As a matter of investment policy, 30% to 50% of the value of its assets will be invested in the Income Fund and 0% to 55% of the value of its assets will be invested in the Large Cap Core Plus Fund. Under normal circumstances, the Balanced Fund&rsquo;s target asset mix is 55% equity securities and 45% fixed income securities. In addition, the Balanced Fund may invest in certain individual securities, including money market instruments and U.S. government securities.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">For the Income Fund, the following describes the types of securities in which the Income Fund is permitted to invest:</p> <p style="font: 10pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The Income Fund invests, under normal circumstances, at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in fixed income securities. These securities are primarily U.S. investment grade fixed income securities, including government and corporate securities, mortgage and asset-backed securities, which are generally pass through securities.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The Income Fund invests at least 75% of its total assets in:</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 24px">&nbsp;</td> <td style="width: 24px; font-weight: bold"> <font style="font-size: 11pt"><b>&bull;</b></font></td> <td> <font style="font-size: 11pt">investment grade, publicly offered debt securities, including mortgage-backed and other asset-backed securities (within the four highest ratings as determined by Moody&rsquo;s Investors Service (&ldquo;Moody&rsquo;s&rdquo;), Standard &amp; Poor&rsquo;s (&ldquo;S&amp;P&rdquo;) or an equivalent rating at the time of purchase)</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 24px">&nbsp;</td> <td style="width: 24px; font-weight: bold"> <font style="font-size: 11pt"><b>&bull;</b></font></td> <td> <font style="font-size: 11pt">securities issued or guaranteed by the U.S. government or its agencies</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 24px">&nbsp;</td> <td style="width: 24px; font-weight: bold"> <font style="font-size: 11pt"><b>&bull;</b></font></td> <td> <font style="font-size: 11pt">high quality commercial paper (within the two highest grades as determined by both Moody&rsquo;s and S&amp;P or an equivalent rating), repurchase and reverse repurchase agreements, time deposits with maturities less than seven days and cash or cash equivalents</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 24px">&nbsp;</td> <td style="width: 24px; font-weight: bold"> <font style="font-size: 11pt"><b>&bull;</b></font></td> <td> <font style="font-size: 11pt">high grade U.S. dollar-denominated debt obligations of foreign governments, foreign corporations, foreign branches of U.S. banks and foreign banks (limited to the four highest ratings as determined by Moody&rsquo;s, S&amp;P or an equivalent rating at the time of purchase and to 15% of the Income Fund&rsquo;s total assets)</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 24px">&nbsp;</td> <td style="width: 24px; font-weight: bold"> <font style="font-size: 11pt"><b>&bull;</b></font></td> <td> <font style="font-size: 11pt">highest quality non U.S. dollar-denominated debt obligations of foreign issuers (limited to the four highest ratings as determined by Moody&rsquo;s, S&amp;P or an equivalent rating at the time of purchase) which are fully hedged back into U.S. dollars and do not exceed 15% of the Income Fund&rsquo;s total assets</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">Generally, the average duration of the U.S. portion of the Income Fund will range within 25% of the Barclays Capital Aggregate Bond Index&rsquo;s duration. There are no maximum maturity limits on individual securities. For defensive purposes, the duration and maturity of the Income Fund may be shortened. The Income Fund will maintain a high grade average quality for the portfolio (third highest rating as determined by Moody&rsquo;s, S&amp;P or an equivalent rating).</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">Up to 25% of the Income Fund&rsquo;s total assets may be invested in securities not described above, including preferred stock, convertible securities, securities carrying warrants to purchase equity securities, U.S. dollar-denominated debt obligations of U.S. and non U.S. issuers rated below A (by Moody&rsquo;s, S&amp;P or an equivalent rating) and non U.S. debt obligations rated below the highest quality (as determined by Moody&rsquo;s, S&amp;P or an equivalent rating) and derivatives.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">For the Large Cap Core Plus Fund, the following describes the types of securities in which the Large Cap Core Plus Fund is permitted to invest:</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 24px">&nbsp;</td> <td style="width: 24px; font-weight: bold"> <font style="font-size: 11pt"><b>&bull;</b></font></td> <td> <font style="font-size: 11pt">The Large Cap Core Plus Fund normally invests at least 85% of its net assets in large cap securities. Large cap securities include securities of those companies with market capitalizations consistent with the Russell 1000 Index&mdash;greater than approximately $232 million as of December 31, 2010.</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 24px">&nbsp;</td> <td style="width: 24px; font-weight: bold"> <font style="font-size: 11pt"><b>&bull;</b></font></td> <td> <font style="font-size: 11pt">The Large Cap Core Plus Fund invests substantially all its assets in growth and value stocks of large cap companies.</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 24px">&nbsp;</td> <td style="width: 24px; font-weight: bold"> <font style="font-size: 11pt"><b>&bull;</b></font></td> <td> <font style="font-size: 11pt">Each Large Cap Core Plus Fund sub-adviser will take long positions in securities it believes has the ability to outperform the Russell 1000 Index and will sell short securities it believes are likely to underperform.</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 24px">&nbsp;</td> <td style="width: 24px; font-weight: bold"> <font style="font-size: 11pt"><b>&bull;</b></font></td> <td> <font style="font-size: 11pt">The Large Cap Core Plus Fund will generally hold approximately 30% of its net assets in short positions, using the proceeds from the short sales to purchase additional long positions resulting in a portfolio with 130% of net assets in long positions. The Large Cap Core Plus Fund&rsquo;s long positions may range from 120% to 140% and its short positions may range from 20% to 40%.</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 24px">&nbsp;</td> <td style="width: 24px; font-weight: bold"> <font style="font-size: 11pt"><b>&bull;</b></font></td> <td> <font style="font-size: 11pt">The Large Cap Core Plus Fund&rsquo;s equity investments principally include common stocks, but may also include preferred stocks, convertible securities, warrants and securities issued by real estate investment trusts (&ldquo;REITs&rdquo;). The Large Cap Core Plus Fund also may invest in exchange-traded funds (&ldquo;ETFs&rdquo;) and similarly structured pooled investments in order to provide exposure to certain equity markets while maintaining liquidity. The Large Cap Core Plus Fund also may engage in short sales of ETFs and similarly structured pooled investments.</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 24px">&nbsp;</td> <td style="width: 24px; font-weight: bold"> <font style="font-size: 11pt"><b>&bull;</b></font></td> <td> <font style="font-size: 11pt">The Large Cap Core Plus Fund may, but is not required to, use derivatives, such as futures, options, forward contracts, swap agreements and ETFs, as an alternative to selling a security short, as a substitute for investing directly in an underlying asset, to increase returns, to manage foreign currency risk, or as part of a hedging strategy.</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 24px">&nbsp;</td> <td style="width: 24px; font-weight: bold"> <font style="font-size: 11pt"><b>&bull;</b></font></td> <td> <font style="font-size: 11pt">The Large Cap Core Plus Fund uses a multi-manager with multiple sub-adviser who employ different strategies.</font></td></tr> </table> falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy, Narrative88false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Principal Risks</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk, Heading89false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">You may lose money by investing in the Balanced Fund. In addition, investing in the Balanced Fund involves the following risks:</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Asset Allocation Risk. </i>Although asset allocation among different asset categories and investment strategies generally reduces risk and exposure to any one category or strategy, the risk remains that the Adviser may favor an asset category or investment strategy that performs poorly relative to other asset categories and investment strategies.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Credit Risk. </i>For debt securities, credit risk is the possibility that an issuer or counterparty to a contract will fail to make timely payments of interest or principal to a fund. The credit risk of the Fund depends on the credit quality of its underlying securities. In general, for debt securities, the lower the credit quality of a fund&rsquo;s securities, the higher a fund&rsquo;s risk, all other factors such as maturity being equal.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Interest Rate Risk.</i> For debt securities, interest rate risk is the possibility that the price will fall because of changing interest rates. In general, debt securities&rsquo; prices rise or fall inversely to changes in interest rates. If interest rates rise, bond prices generally fall; if interest rates fall, bond prices generally rise. In addition, for a given change in interest rates, longer-maturity bonds fluctuate more in price (gaining or losing more in value) than shorter-maturity bonds.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Prepayment Risk. </i>Mortgage-backed securities are subject to the risk of unanticipated prepayments of principal with respect to mortgages in the security&rsquo;s underlying pool of assets. While principal prepayments are passed through to the holders of the securities, prepayments also reduce the future payments on such securities and may reduce their value. Mortgage-backed securities are subject to the risk that an unexpected rise in interest rates will extend the life of a mortgage-backed security beyond the expected prepayment time, typically reducing the security&rsquo;s value. Mortgage-backed securities are subject to the risk that an unexpected decline in interest rates will contract the life of a mortgage-backed security, thereby affecting its prepayment schedule, which may affect the value of the security.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Reinvestment Risk.</i> During periods of falling interest rates, a debt security with a high stated interest rate may be prepaid (or &ldquo;called&rdquo;) prior to its expected maturity date. If, during periods of falling interest rates, a debt security with a high stated interest rate is called, the unanticipated proceeds would likely be invested at lower interest rates, and a fund&rsquo;s income or yield may decline. Call provisions, which may lead to reinvestment risk, are most common for intermediate- and long-term municipal, corporate and mortgage-backed securities. To the extent securities subject to call were acquired at a premium, the potential for appreciation in the event of a decline in interest rates may be limited and may even result in losses.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Recent Market Events Risk. </i>The equity and debt capital markets in the U.S. and elsewhere have experienced unprecedented volatility in the past several years. This financial crisis had caused a significant decline in the value and liquidity of many securities and may create a higher degree of volatility in the net asset values of many mutual funds, including the Fund. Because these events are unprecedented, it is difficult to predict their magnitude or duration. Changes in market conditions will not have the same impact on all types of securities.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">In response to the crisis, the U.S. Government and the Federal Reserve have taken steps to support financial markets. The withdrawal of this support could negatively impact the value and liquidity of certain securities. In addition, legislation recently enacted in the U.S. calls for changes in many aspects of financial regulation. The impact of the legislation on the markets, and the practical implications for market participants, may not be fully known for some time.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">By investing in the Balanced Fund, an investor also assumes the same types of risks, either directly, or indirectly, as investing in the Income Fund and the Large Cap Core Plus Fund. For the Income Fund, such risks include &ldquo;Credit Risk,&rdquo; &ldquo;Interest Rate Risk,&rdquo; &ldquo;Prepayment Risk,&rdquo; &ldquo;Reinvestment Risk&rdquo; and &ldquo;Recent Market Events Risk,&rdquo; as described above and the following risks:</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Portfolio Turnover Risk</i>. A Fund that trades aggressively will experience high portfolio turnover and relatively high brokerage and other transaction costs. Such transaction costs may lower a fund&rsquo;s effective investment return.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Portfolio Strategy Risk.</i> The investment performance of the Income Fund is in part dependent upon a sub-adviser&rsquo;s skill in making appropriate investments. To the extent that a fund&rsquo;s investments differ from the portfolio represented by the benchmark, there exists the potential for volatility of the return of a fund relative to its index. As the industry and sector composition of the market or index changes over time, the implementation of a fund&rsquo;s strategy can lead to substantial differences in the sector or industry allocation of a fund relative to the market or index.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Liquidity Risk.</i> The Income Fund may invest in certain securities that may be difficult or impossible to sell at a certain time and at a price that the Fund finds to be favorable. The Income Fund may have to accept an unfavorable price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on portfolio management or investment performance.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Currency Risk.</i> Non U.S. dollar-denominated securities are subject to fluctuations in the exchange rates between the U.S. dollar and foreign currencies which may negatively affect an investment. Adverse changes in exchange rates may erode or reverse any gains produced by foreign currency denominated investments, and may widen any losses.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Derivatives Risk. </i>When a fund uses derivatives (securities whose value is based upon the value of another security or an index) to hedge positions in the portfolio, any loss generated by the derivative security should be substantially offset by gains on the hedged investment and vice versa. While hedging can reduce or eliminate losses, it can also reduce or eliminate gains. To the extent that a derivative is not used as a hedge (i.e., for speculation), a fund is directly exposed to the potential gains and losses of that derivative. Gains and losses from non hedging derivative positions may be substantially greater than the derivative&rsquo;s original cost. To the extent a fund uses derivatives, a fund will (to the extent required by applicable law) either segregate cash or liquid assets in the prescribed amounts or &ldquo;cover&rdquo; its future obligations under the transaction, such as by holding an offsetting investment.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Valuation Risk. </i>A fund may invest in securities that are difficult to value and may inadvertently value certain of its securities at a higher price than the market will bear.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Foreign Investment Risk.</i> Foreign investments often involve risks such as political instability, differences in financial reporting standards and less stringent regulation of securities markets. These risks are magnified in less-established, emerging markets.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">For the Large Cap Core Plus Fund, such risks include &ldquo;Derivatives Risk,&rdquo; &ldquo;Recent Market Events Risk&rdquo; and &ldquo;Portfolio Turnover Risk,&rdquo; as described above and the following risks:</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Equity Risk.</i> The principal risk of investing in the Large Cap Core Plus Fund is equity risk. This is the risk that the prices of stocks held by the Large Cap Core Plus Fund will change due to general market and economic conditions, perceptions regarding the industries in which the companies participate, and each company&rsquo;s particular circumstances. Equity investments, including common stocks, tend to be more volatile than bonds and money market instruments. The value of the Large Cap Core Plus Fund&rsquo;s shares will go up and down due to movement in the collective returns of the individual securities held by the Large Cap Core Plus Fund. Because common stocks are subordinate to preferred stocks in a company&rsquo;s capital structure, in a company liquidation, the claims of secured and unsecured creditors and owners of bonds and preferred stocks take precedence over the claims of common stock shareholders.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Multi-Managed Fund Risk. </i>The Large Cap Core Plus Fund is a multi-managed fund with multiple sub-advisers who employ different strategies. As a result, the Large Cap Core Plus Fund may have buy and sell transactions in the same security on the same day. In addition, at any given time, the Large Cap Core Plus Fund may have long and short positions in the same security.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Short Sale Risk.</i> Short sales involve costs and risk. If a security sold short increases in price, the Large Cap Core Plus Fund may need to cover its short position at a higher price than the short sale price, resulting in a loss. The Large Cap Core Plus Fund will have substantial short positions and must borrow those securities to make delivery to the buyer. The Large Cap Core Plus Fund may not be able to borrow a security that it needs to deliver or it may not be able to close out a short position at an acceptable price and may need to sell related long positions before it had intended to do so. As a result, the Large Cap Core Plus Fund may not be able to successfully implement its short sale strategy due to the limited availability of desired securities or for other reasons and the amount the Large Cap Core Plus Fund could lose on a short sale is theoretically unlimited.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>ETF Risk. </i>ETFs in which the Large Cap Core Plus Fund may invest involve certain inherent risks generally associated with investments in a portfolio of common stocks, including the risk that the general level of stock prices may decline, thereby adversely affecting the value of each unit of the ETF. Moreover, an ETF may not fully replicate the performance of its benchmark index because of the temporary unavailability of certain index securities in the secondary market or discrepancies between the ETF and the index with respect to the weighting of securities or the number of stocks held. Investing in ETFs, which are investment companies, may involve duplication of advisory fees and certain other expenses.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Real Estate Investment Trust Risk. </i>The Large Cap Core Plus Fund may invest in REITs, which carry with them many of the risks associated with direct ownership of real estate, including decline in property values, extended vacancies, increases in property taxes, and changes in interest rates. In addition, REITs are dependent upon management skills, may not be diversified, and may experience substantial cost in the event of borrower or lessee defaults. REITs are also subject to heavy cash flow dependency.</p> falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk, Narrative90false0rr_RiskLoseMoneyrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00You may lose money by investing in the Balanced Fund.falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringSummarize the principal risks of investing in the Fund, including the risks to which the Fund's portfolio as a whole is subject and the circumstances reasonably likely to affect adversely the Fund's net asset value, yield, and total return. Unless the Fund is a Money Market Fund, disclose that loss of money is a risk of investing in the Fund. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Subsection b falsefalseMay Lose Money91false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Performance</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table, Heading92false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The information below provides an illustration of how the Balanced Fund&rsquo;s performance has varied over time. The bar chart and table provide some indication of the risks of investing in the Balanced Fund by showing the changes in the Balanced Fund&rsquo;s investment performance from year to year during the periods indicated and by showing how the average annual total returns for the one-, five- and ten-year periods compare with broad-based securities market indexes. The total return figures do not reflect expenses that apply to the separate account or related annuity contracts. The inclusion of these charges would reduce the total return figures for all periods shown. The Balanced Fund&rsquo;s past investment performance does not necessarily indicate how it will perform in the future.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The Stock/Bond Composite consists of fifty-five percent of the S&amp;P 500 Index and forty-five percent of the Barclays Capital U.S. Aggregate Bond Index (prior to September 28, 2009, the Composite consisted of sixty percent of the S&amp;P 500 Index and forty percent of the Barclays Capital U.S. Aggregate Bond Index).</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance, Narrative93false0rr_PerformanceInformationIllustratesVariabilityOfReturnsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The information below provides an illustration of how the Balanced Fund's performance has varied over time.falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInclude the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance, Information Illustrates Variability of Returns94false0rr_PerformancePastDoesNotIndicateFuturerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Balanced Fund's past investment performance does not necessarily indicate how it will perform in the future.falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInclude the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance, Past Does Not Indicate Future95false0rr_BarChartHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center"><b>Calendar Year Returns</b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart, Heading96false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">During the periods shown in the bar chart, the highest return for a quarter was 11.23% (quarter ended 09/30/09) and the lowest return for a quarter was -12.16% (quarter ended 12/31/08).</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart, Closing97false0rr_HighestQuarterlyReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00highest return for a quarterfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return, Label98false0rr_BarChartHighestQuarterlyReturnDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002009-09-30falsefalsetruefalsefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return Date99false0rr_BarChartHighestQuarterlyReturnrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.11230.1123falsefalsefalsefalsefalseOtherxbrli: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.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return100false0rr_LowestQuarterlyReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00lowest return for a quarterfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return, Label101false0rr_BarChartLowestQuarterlyReturnDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002008-12-31falsefalsetruefalsefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return Date102false0rr_BarChartLowestQuarterlyReturnrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.1216-0.1216falsefalsefalsefalsefalseOtherxbrli: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.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return103false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Average Annual Total Returns</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>(periods ended December 31, 2010)</b></p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalsePerformance Table:104false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse6falsefalseUSDtruefalse{dei_LegalEntityAxis} : Wilshire VIT Balanced Fund {rr_ProspectusShareClassAxis} : Wilshire VIT Balanced Fund Shares 5/1/2011 - 5/1/2011 USD ($) $wvit_S000001038_C000002798http://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire VIT Balanced Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000001038Memberdei_LegalEntityAxisexplicitMemberfalsefalseWilshire VIT Balanced Fund Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_C000002798Memberrr_ProspectusShareClassAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseWilshire VIT Balanced Fund | Wilshire VIT Balanced Fund Shares105true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:106false0dei_TradingSymboldeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00&nbsp;falsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No authoritative reference available.falsefalseTrading Symbol107false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement Fees108false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution and Service (12b-1) Fees109false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00180.0018falsefalsefalsefalsefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther Expenses110false0rr_AcquiredFundFeesAndExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01310.0131falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseAcquired Fund Fees and Expenses111false0rr_NetExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01490.0149falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseTotal Annual Fund Operating Expenses112false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue152152falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, 1 YEAR113false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue471471falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, 3 YEARS114false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue813813falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, 5 YEARS115false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue17791779falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, 10 YEARS116false0rr_AnnualReturn2001rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.01010.0101falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2001117false0rr_AnnualReturn2002rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.0824-0.0824falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2002118false0rr_AnnualReturn2003rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.19550.1955falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse2003119false0rr_AnnualReturn2004rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.08190.0819falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse2004120false0rr_AnnualReturn2005rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.04290.0429falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2005121false0rr_AnnualReturn2006rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.11590.1159falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2006122false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.03080.0308falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse2007123false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2668-0.2668falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2008124false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.18030.1803falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse2009125false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.10920.1092falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2010126false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.10920.1092falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse1 Year127false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.020.02falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse5 Years128false0rr_AverageAnnualReturnYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.03270.0327falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse10 Years129false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse7falsefalsetruefalse{dei_LegalEntityAxis} : Wilshire VIT Balanced Fund {rr_PerformanceMeasureAxis} : S&P 500 Index (reflects no deduction for fees, expenses or taxes) 5/1/2011 - 5/1/2011 wvit_S000001038_snp500bhttp://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire VIT Balanced Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000001038Memberdei_LegalEntityAxisexplicitMemberfalsefalseS&P 500 Index (reflects no deduction for fees, expenses or taxes)rr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_snp500bMemberrr_PerformanceMeasureAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseWilshire VIT Balanced Fund | S&P 500 Index (reflects no deduction for fees, expenses or taxes)130true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:131false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.15060.1506falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse1 Year132false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.02290.0229falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse5 Years133false0rr_AverageAnnualReturnYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01410.0141falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse10 Years134false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse8falsefalsetruefalse{dei_LegalEntityAxis} : Wilshire VIT Balanced Fund {rr_PerformanceMeasureAxis} : Barclays Capital U.S. Aggregate Bond Index (reflects no deduction for fees, expenses or taxes) 5/1/2011 - 5/1/2011 wvit_S000001038_bcusabibhttp://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire VIT Balanced Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000001038Memberdei_LegalEntityAxisexplicitMemberfalsefalseBarclays Capital U.S. Aggregate Bond Index (reflects no deduction for fees, expenses or taxes)rr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_bcusabibMemberrr_PerformanceMeasureAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseWilshire VIT Balanced Fund | Barclays Capital U.S. Aggregate Bond Index (reflects no deduction for fees, expenses or taxes)135true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:136false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.06540.0654falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse1 Year137false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.0580.058falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse5 Years138false0rr_AverageAnnualReturnYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.05840.0584falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse10 Years139false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse9falsefalsetruefalse{dei_LegalEntityAxis} : Wilshire VIT Balanced Fund {rr_PerformanceMeasureAxis} : Stock/Bond Composite (reflects no deduction for fees, expenses or taxes) 5/1/2011 - 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5/1/2011 wvit_S000001040http://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire VIT Income Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000001040Memberdei_LegalEntityAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseWilshire VIT Income Fund145true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:146false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 14pt Times New Roman, Times, Serif; margin: 0; text-align: center"><b>Income Fund</b></p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return147false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Investment Objective</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective:148false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The Income Fund (the &ldquo;Fund&rdquo;) seeks to achieve a long-term total rate of return in excess of the U.S. bond market over a full market cycle.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective149false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Fees and Expenses of the Income Fund</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseFees and expenses of the fund:150false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">This table describes the fees and expenses that you may pay if you buy and hold shares of the Income Fund. The table below does not reflect expenses that apply to separate accounts or related annuity contracts, and if such expenses were reflected, fees would be higher.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseFees and expenses of the fund, narrative151false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment):</p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseAnnual fund operating expenses, heading152false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Portfolio Turnover</b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio turnover, heading153false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The Income Fund pays transaction costs, such as commissions, when it buys and sells securities (or &ldquo;turns over&rdquo; 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 Income Fund&rsquo;s performance. During the most recent fiscal year, the Income Fund&rsquo;s portfolio turnover rate was 302% of the average value of its portfolio.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio turnover, narrative154false0rr_PortfolioTurnoverRaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse3.023.02falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureThis element represents the rate of portfolio turnover presented as a percentage (SEC Form N-1A 2006-09-14 A.3.example.3 Portfolio Turnover A.3.instructions.5 Portfolio Turnover).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover Rate155false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Example:</b> This example is intended to help you compare the cost of investing in the Income Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 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 Income Fund&rsquo;s operating expenses remain the same. The example does not reflect expenses that apply to separate accounts or related annuity contracts, and if such expenses were reflected, fees would be higher. Although your actual costs may be higher or lower, based on these assumptions your costs would be:</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative156false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Principal Investment Strategies</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy, Heading157false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The Income Fund invests, under normal circumstances, at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in fixed income securities. These securities are primarily U.S. investment grade fixed income securities, including government and corporate securities, mortgage and asset-backed securities, which are generally pass through securities.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The Income Fund invests at least 75% of its total assets in:</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 24px">&nbsp;</td> <td style="width: 24px; font-weight: bold"> <font style="font-size: 11pt"><b>&bull;</b></font></td> <td> <font style="font-size: 11pt">investment grade, publicly offered debt securities, including mortgage-backed and other asset-backed securities (within the four highest ratings as determined by Moody&rsquo;s Investors Service (&ldquo;Moody&rsquo;s&rdquo;), Standard &amp; Poor&rsquo;s (&ldquo;S&amp;P&rdquo;) or an equivalent rating at the time of purchase)</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 24px">&nbsp;</td> <td style="width: 24px; font-weight: bold"> <font style="font-size: 11pt"><b>&bull;</b></font></td> <td> <font style="font-size: 11pt">securities issued or guaranteed by the U.S. government or its agencies</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 24px">&nbsp;</td> <td style="width: 24px; font-weight: bold"> <font style="font-size: 11pt"><b>&bull;</b></font></td> <td> <font style="font-size: 11pt">high quality commercial paper (within the two highest grades as determined by both Moody&rsquo;s and S&amp;P or an equivalent rating), repurchase and reverse repurchase agreements, time deposits with maturities less than seven days and cash or cash equivalents</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 24px">&nbsp;</td> <td style="width: 24px"> <font style="font-size: 11pt">&bull;</font></td> <td> <font style="font-size: 11pt">high grade U.S. dollar-denominated debt obligations of foreign governments, foreign corporations, foreign branches of U.S. banks and foreign banks (limited to the four highest ratings as determined by Moody&rsquo;s, S&amp;P or an equivalent rating at the time of purchase and to 15% of the Income Fund&rsquo;s total assets)</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 24px">&nbsp;</td> <td style="width: 24px"> <font style="font-size: 11pt">&bull;</font></td> <td> <font style="font-size: 11pt">highest quality non U.S. dollar-denominated debt obligations of foreign issuers (limited to the four highest ratings as determined by Moody&rsquo;s, S&amp;P or an equivalent rating at the time of purchase) which are fully hedged back into U.S. dollars and do not exceed 15% of the Income Fund&rsquo;s total assets</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">Generally, the average duration of the U.S. portion of the Income Fund will range within 25% of the Barclays Capital Aggregate Bond Index&rsquo;s duration. There are no maximum maturity limits on individual securities. For defensive purposes, the duration and maturity of the Income Fund may be shortened. The Income Fund will maintain a high grade average quality for the portfolio (third highest rating as determined by Moody&rsquo;s, S&amp;P or an equivalent rating).</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">Up to 25% of the Income Fund&rsquo;s total assets may be invested in securities not described above, including preferred stock, convertible securities, securities carrying warrants to purchase equity securities, U.S. dollar-denominated debt obligations of U.S. and non U.S. issuers rated below A (by Moody&rsquo;s, S&amp;P or an equivalent rating) and non U.S. debt obligations rated below the highest quality (as determined by Moody&rsquo;s, S&amp;P or an equivalent rating) and derivatives.</p> falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy, Narrative158false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Principal Risks</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk, Heading159false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">You may lose money by investing in the Income Fund. In addition, investing in the Income Fund involves the following principal risks:</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Credit Risk.</i> For debt securities, credit risk is the possibility that an issuer or counterparty to a contract will fail to make timely payments of interest or principal to a fund. The credit risk of the Income Fund depends on the credit quality of its underlying securities. In general, for debt securities, the lower the credit quality of a fund&rsquo;s securities, the higher a fund&rsquo;s risk, all other factors such as maturity being equal.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Interest Rate Risk.</i> For debt securities, interest rate risk is the possibility that the price will fall because of changing interest rates. In general, debt securities&rsquo; prices rise or fall inversely to changes in interest rates. If interest rates rise, bond prices generally fall; if interest rates fall, bond prices generally rise. In addition, for a given change in interest rates, longer-maturity bonds fluctuate more in price (gaining or losing more in value) than shorter-maturity bonds.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Prepayment Risk.</i> Mortgage-backed securities are subject to the risk of unanticipated prepayments of principal with respect to mortgages in the security&rsquo;s underlying pool of assets. While principal prepayments are passed through to the holders of the securities, prepayments also reduce the future payments on such securities and may reduce their value. Mortgage-backed securities are subject to the risk that an unexpected rise in interest rates will extend the life of a mortgage-backed security beyond the expected prepayment time, typically reducing the security&rsquo;s value. Mortgage-backed securities are subject to the risk that an unexpected decline in interest rates will contract the life of a mortgage-backed security, thereby affecting its prepayment schedule, which may affect the value of the security.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Reinvestment Risk.</i> During periods of falling interest rates, a debt security with a high stated interest rate may be prepaid (or &ldquo;called&rdquo;) prior to its expected maturity date. If, during periods of falling interest rates, a debt security with a high stated interest rate is called, the unanticipated proceeds would likely be invested at lower interest rates, and a fund&rsquo;s income or yield may decline. Call provisions, which may lead to reinvestment risk, are most common for intermediate- and long-term municipal, corporate and mortgage-backed securities. To the extent securities subject to call were acquired at a premium, the potential for appreciation in the event of a decline in interest rates may be limited and may even result in losses.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Portfolio Turnover Risk.</i> A fund that trades aggressively will experience high portfolio turnover and relatively high brokerage and other transaction costs. Such transaction costs may lower a fund&rsquo;s effective investment return.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Portfolio Strategy Risk.</i> The investment performance of the Income Fund is in part dependent upon a sub-adviser&rsquo;s skill in making appropriate investments. To the extent that a fund&rsquo;s investments differ from the portfolio represented by the benchmark, there exists the potential for volatility of the return of a fund relative to its index. As the industry and sector composition of the market or index changes over time, the implementation of a fund&rsquo;s strategy can lead to substantial differences in the sector or industry allocation of a fund relative to the market or index.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Liquidity Risk. </i>The Fund may invest in certain securities that may be difficult or impossible to sell at a certain time and at a price that the Fund finds to be favorable. The Fund may have to accept an unfavorable price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on portfolio management or investment performance.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Currency Risk.</i> Non U.S. dollar-denominated securities are subject to fluctuations in the exchange rates between the U.S. dollar and foreign currencies which may negatively affect an investment. Adverse changes in exchange rates may erode or reverse any gains produced by foreign currency denominated investments, and may widen any losses.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Derivatives Risk. </i>When a fund uses derivatives (securities whose value is based upon the value of another security or an index) to hedge positions in the portfolio, any loss generated by the derivative security should be substantially offset by gains on the hedged investment and vice versa. While hedging can reduce or eliminate losses, it can also reduce or eliminate gains. To the extent that a derivative is not used as a hedge (i.e., for speculation), a fund is directly exposed to the potential gains and losses of that derivative. Gains and losses from non hedging derivative positions may be substantially greater than the derivative&rsquo;s original cost. To the extent a fund uses derivatives, a fund will (to the extent required by applicable law) either segregate cash or liquid assets in the prescribed amounts or &ldquo;cover&rdquo; its future obligations under the transaction, such as by holding an offsetting investment.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Valuation Risk. </i>A fund may invest in securities that are difficult to value and may inadvertently value certain of its securities at a higher price than the market will bear.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Foreign Investment Risk. </i>Foreign investments often involve risks such as political instability, differences in financial reporting standards and less stringent regulation of securities markets. These risks are magnified in less-established, emerging markets.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Recent Market Events Risk. </i>The equity and debt capital markets in the U.S. and elsewhere have experienced unprecedented volatility in the past several years. This financial crisis had caused a significant decline in the value and liquidity of many securities and may create a higher degree of volatility in the net asset values of many mutual funds, including the Fund. Because these events are unprecedented, it is difficult to predict their magnitude or duration. Changes in market conditions will not have the same impact on all types of securities.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">In response to the crisis, the U.S. Government and the Federal Reserve have taken steps to support financial markets. The withdrawal of this support could negatively impact the value and liquidity of certain securities. In addition, legislation recently enacted in the U.S. calls for changes in many aspects of financial regulation. The impact of the legislation on the markets, and the practical implications for market participants, may not be fully known for some time.</p> falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk, Narrative160false0rr_RiskLoseMoneyrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00You may lose money by investing in the Income Fund. falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringSummarize the principal risks of investing in the Fund, including the risks to which the Fund's portfolio as a whole is subject and the circumstances reasonably likely to affect adversely the Fund's net asset value, yield, and total return. Unless the Fund is a Money Market Fund, disclose that loss of money is a risk of investing in the Fund. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Subsection b falsefalseMay Lose Money161false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Performance</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table, Heading162false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The information below provides an illustration of how the Income Fund&rsquo;s performance has varied over time. The bar chart and table provide some indication of the risks of investing in the Income Fund by showing the changes in the Fund&rsquo;s investment performance from year to year during the periods indicated and by showing how the average annual total returns for the one-, five- and ten-year periods compare with a broad-based securities market index. The total return figures do not reflect expenses that apply to the separate account or related annuity contracts. The inclusion of these charges would reduce the total return figures for all periods shown. The Fund&rsquo;s past investment performance does not necessarily indicate how it will perform in the future.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance, Narrative163false0rr_PerformanceInformationIllustratesVariabilityOfReturnsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The information below provides an illustration of how the Income Fund's performance has varied over time. falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInclude the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance, Information Illustrates Variability of Returns164false0rr_PerformancePastDoesNotIndicateFuturerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Fund's past investment performance does not necessarily indicate how it will perform in the future.falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInclude the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance, Past Does Not Indicate Future165false0rr_BarChartHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center"><b>Calendar Year Returns</b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart, Heading166false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">During the periods shown in the bar chart, the highest return for a quarter was 6.35% (quarter ended 09/30/09) and the lowest return for a quarter was -4.48% (quarter ended 09/30/08).</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart, Closing167false0rr_HighestQuarterlyReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00highest return for a quarterfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return, Label168false0rr_BarChartHighestQuarterlyReturnDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002009-09-30falsefalsetruefalsefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return Date169false0rr_BarChartHighestQuarterlyReturnrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.06350.0635falsefalsefalsefalsefalseOtherxbrli: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.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return170false0rr_LowestQuarterlyReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00lowest return for a quarterfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return, Label171false0rr_BarChartLowestQuarterlyReturnDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002008-09-30falsefalsetruefalsefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return Date172false0rr_BarChartLowestQuarterlyReturnrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.0448-0.0448falsefalsefalsefalsefalseOtherxbrli: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.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return173false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Average Annual Total Returns</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>(periods ended December 31, 2010)</b></p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalsePerformance Table:174false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse11falsefalseUSDtruefalse{dei_LegalEntityAxis} : Wilshire VIT Income Fund {rr_ProspectusShareClassAxis} : Wilshire VIT Income Fund Shares 5/1/2011 - 5/1/2011 USD ($) $wvit_S000001040_C000002800http://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire VIT Income Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000001040Memberdei_LegalEntityAxisexplicitMemberfalsefalseWilshire VIT Income Fund Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_C000002800Memberrr_ProspectusShareClassAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseWilshire VIT Income Fund | Wilshire VIT Income Fund Shares175true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:176false0dei_TradingSymboldeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00&nbsp;falsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No authoritative reference available.falsefalseTrading Symbol177false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00550.0055falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement Fees178false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution and Service (12b-1) Fees179false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00280.0028falsefalsefalsefalsefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther Expenses180false0rr_NetExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01080.0108falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseTotal Annual Fund Operating Expenses181false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue110110falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, 1 YEAR182false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue343343falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, 3 YEARS183false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue595595falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, 5 YEARS184false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue13171317falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, 10 YEARS185false0rr_AnnualReturn2001rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.08860.0886falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2001186false0rr_AnnualReturn2002rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.09160.0916falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2002187false0rr_AnnualReturn2003rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.07350.0735falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse2003188false0rr_AnnualReturn2004rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.04940.0494falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse2004189false0rr_AnnualReturn2005rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.01970.0197falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2005190false0rr_AnnualReturn2006rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.03990.0399falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2006191false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.04210.0421falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse2007192false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.0644-0.0644falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2008193false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.13290.1329falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse2009194false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.09110.0911falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2010195false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.09110.0911falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse1 Year196false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.04620.0462falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse5 Years197false0rr_AverageAnnualReturnYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.05520.0552falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse10 Years198false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse12falsefalsetruefalse{dei_LegalEntityAxis} : Wilshire VIT Income Fund {rr_PerformanceMeasureAxis} : Barclays Capital U.S. Aggregate Bond Index (reflects no deduction for fees, expenses or taxes) 5/1/2011 - 5/1/2011 wvit_S000001040_bcusabiihttp://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire VIT Income Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000001040Memberdei_LegalEntityAxisexplicitMemberfalsefalseBarclays Capital U.S. Aggregate Bond Index (reflects no deduction for fees, expenses or taxes)rr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_bcusabiiMemberrr_PerformanceMeasureAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseWilshire VIT Income Fund | Barclays Capital U.S. Aggregate Bond Index (reflects no deduction for fees, expenses or taxes)199true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:200false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.06540.0654falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse1 Year201false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.0580.058falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse5 Years202false0rr_AverageAnnualReturnYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.05840.0584falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse10 Years203false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse13falsefalsetruefalse{dei_LegalEntityAxis} : Wilshire VIT Small Cap Growth Fund 5/1/2011 - 5/1/2011 wvit_S000001043http://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire VIT Small Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000001043Memberdei_LegalEntityAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseWilshire VIT Small Cap Growth Fund204true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:205false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 14pt Times New Roman, Times, Serif; margin: 0; text-align: center"><b>Small Cap Growth Fund</b></p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return206false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Investment Objective</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective:207false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The Small Cap Growth Fund (the &ldquo;Fund&rdquo;) seeks long-term capital appreciation.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective208false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Fees and Expenses of the Small Cap Growth Fund</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseFees and expenses of the fund:209false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">This table describes the fees and expenses that you may pay if you buy and hold shares of the Small Cap Growth Fund. The table below does not reflect expenses that apply to separate accounts or related annuity contracts, and if such expenses were reflected, fees would be higher.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseFees and expenses of the fund, narrative210false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment):</p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseAnnual fund operating expenses, heading211false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Portfolio Turnover</b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio turnover, heading212false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The Small Cap Growth Fund pays transaction costs, such as commissions, when it buys and sells securities (or &ldquo;turns over&rdquo; 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 Small Cap Growth Fund&rsquo;s performance. During the most recent fiscal year, the Small Cap Growth Fund&rsquo;s portfolio turnover rate was 138% of the average value of its portfolio.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio turnover, narrative213false0rr_PortfolioTurnoverRaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse1.381.38falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureThis element represents the rate of portfolio turnover presented as a percentage (SEC Form N-1A 2006-09-14 A.3.example.3 Portfolio Turnover A.3.instructions.5 Portfolio Turnover).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover Rate214false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Example:</b> This example is intended to help you compare the cost of investing in the Small Cap Growth Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 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 Small Cap Growth Fund&rsquo;s operating expenses remain the same. The example does not reflect expenses that apply to separate accounts or related annuity contracts, and if such expenses were reflected, fees would be higher. Although your actual costs may be higher or lower, based on these assumptions your costs would be:</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative215false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Principal Investment Strategies</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy, Heading216false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The Small Cap Growth Fund invests, under normal circumstances, at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in securities of small cap companies. The Small Cap Growth Fund ordinarily invests in small cap equity securities (less than $2.5 billion at the time of investment) which the sub-advisers believe have earnings growth potential. A security would be considered by the sub-advisers to have favorable and above-average earnings growth prospects if its growth rate estimates exceed the average for the Small Cap Growth Fund&rsquo;s benchmark, the Russell 2000 Growth Index. The Russell 2000 Growth Index is composed of those securities in the Russell 2000 Index with a greater-than-average growth orientation. As of December 31, 2010, the Russell 2000 Growth Index and the Russell 2000 Index had an average capitalization of $1.38 billion and $1.25 billion, respectively. Securities in the Russell 2000 Growth Index generally have higher price-to-book and price-to-earnings ratios than those in the Russell 2000 Value Index. The Small Cap Growth Fund uses a multi-manager strategy with sub-advisers who may employ different strategies. Copper Rock Capital Partners, LLC (&ldquo;Copper Rock&rdquo;) and TWIN Capital Management, Inc. (&ldquo;TWIN&rdquo;) each manage a portion of the Small Cap Growth Fund&rsquo;s portfolio. TWIN invests in common stocks, exchange-traded funds (&ldquo;ETFs&rdquo;), warrants, or rights that are chosen by giving primary consideration to creating and maintaining a portfolio which is intended to replicate as closely as practicable the performance of the Russell 2000 Index.</p> falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy, Narrative217false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Principal Risks</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk, Heading218false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">You may lose money by investing in the Small Cap Growth Fund. In addition, investing in the Small Cap Growth Fund involves the following principal risks:</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Small Cap Risk.</i> Small-cap companies may lack the management experience, financial resources, product diversity and competitive strengths of larger companies, and may be traded less frequently. These companies may be in the developmental stage or may be older companies undergoing significant changes. Small-cap companies may also be subject to greater business risks and more sensitive to changes in economic conditions than larger more established companies. As a result, the prices of small-cap companies may rise and fall more sharply.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Equity Risk. </i>A principal risk of investing in the Small Cap Growth Fund is equity risk. This is the risk that the prices of stocks held by the Small Cap Growth Fund will change due to general market and economic conditions, perceptions regarding the industries in which the companies participate, and each company&rsquo;s particular circumstances. Equity investments, including common stocks, tend to be more volatile than bonds and money market instruments. The value of the Small Cap Growth Fund&rsquo;s shares will go up and down due to movement in the collective returns of the individual securities held by the Small Cap Growth Fund. Because common stocks are subordinate to preferred stocks in a company&rsquo;s capital structure, in a company liquidation, the claims of secured and unsecured creditors and owners of bonds and preferred stocks take precedence over the claims of common stock shareholders.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>ETF Risk. </i>ETFs in which the Small Cap Growth Fund may invest involve certain inherent risks generally associated with investments in a portfolio of common stocks, including the risk that the general level of stock prices may decline, thereby adversely affecting the value of each unit of the ETF. Moreover, an ETF may not fully replicate the performance of its benchmark index because of the temporary unavailability of certain index securities in the secondary market or discrepancies between the ETF and the index with respect to the weighting of securities or the number of stocks held. Investing in ETFs, which are investment companies, involve duplication of advisory fees and certain other expenses.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Investment Style Risk. </i>During certain market conditions, a fund with a more specific investment style (such as value or growth) may perform less well than a fund that allows greater flexibility in the investment of assets.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Market Risk. </i>For equity securities, stock market movements will affect the Small Cap Growth Fund&rsquo;s share price on a daily basis. Declines in value are possible because of declines in the stock market in general or because of a decline in the specific securities held by the Small Cap Growth Fund. There is also the possibility that the price of the security will fall because the market perceives that there is or will be a deterioration in the fundamental value of the issuer or poor earnings performance by the issuer. Market risk may affect a single company, industry, sector or the market as a whole. For debt securities, the market value of a security may move up and down, sometimes rapidly and unpredictably. Market risk may affect a single issuer, an industry, a sector or the bond market as a whole.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Recent Market Events Risk</i>. The equity and debt capital markets in the U.S. and elsewhere have experienced unprecedented volatility in the past several years. This financial crisis had caused a significant decline in the value and liquidity of many securities and may create a higher degree of volatility in the net asset values of many mutual funds, including the Fund. Because these events are unprecedented, it is difficult to predict their magnitude or duration. Changes in market conditions will not have the same impact on all types of securities.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">In response to the crisis, the U.S. Government and the Federal Reserve have taken steps to support financial markets.&nbsp;&nbsp;The withdrawal of this support could negatively impact the value of and liquidation of certain securities.&nbsp;&nbsp;In addition, legislation recently enacted in the U.S. calls for changes in many aspects of financial regulation.&nbsp;&nbsp;The impact of the legislation on the markets, and the practical implications for market participants, may not be fully known for some time.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Portfolio Strategy Risk. </i>The investment performance of the Small Cap Growth Fund is in part dependent upon a sub-adviser&rsquo;s skill in making appropriate investments. To the extent that the Small Cap Growth Fund&rsquo;s investments differ from the portfolio represented by the benchmark, there exists the potential for volatility of the return of the Small Cap Growth Fund relative to its index. As the industry and sector composition of the market or index changes over time, the implementation of the Small Cap Growth Fund&rsquo;s strategy can lead to substantial differences in the sector or industry allocation of the Small Cap Growth Fund relative to the market or index.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Portfolio Turnover Risk. </i>A fund that trades aggressively will experience high portfolio turnover and relatively high brokerage and other transaction costs. Such transaction costs may lower a fund&rsquo;s effective investment return.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Multi-Managed Fund Risk.</i> The Small Cap Growth Fund is a multi-managed fund with multiple sub-advisers who employ different strategies. As a result, the Small Cap Growth Fund may have buy and sell transactions in the same security on the same day.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Asset Allocation Risk.</i> Although asset allocation among different asset categories and investment strategies generally reduces risk and exposure to any one category or strategy, the risk remains that the Adviser may favor an asset category or investment strategy that performs poorly relative to other asset categories and investment strategies.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Investment Style Risk. </i>During certain market conditions, a fund with a more specific investment style (such as value or growth) may perform less well than a fund that allows greater flexibility in the investment of assets.</p> falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk, Narrative219false0rr_RiskLoseMoneyrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00You may lose money by investing in the Small Cap Growth Fund.falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringSummarize the principal risks of investing in the Fund, including the risks to which the Fund's portfolio as a whole is subject and the circumstances reasonably likely to affect adversely the Fund's net asset value, yield, and total return. Unless the Fund is a Money Market Fund, disclose that loss of money is a risk of investing in the Fund. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Subsection b falsefalseMay Lose Money220false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Performance</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table, Heading221false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The information below provides an illustration of how the Small Cap Growth Fund&rsquo;s performance has varied over time. The bar chart and table provide some indication of the risks of investing in the Small Cap Growth Fund by showing the changes in the Fund&rsquo;s investment performance from year to year during the periods indicated and by showing how the average annual total returns for the one-, five- and ten-year periods compare with a broad-based securities market index. The total return figures do not reflect expenses that apply to the separate account or related annuity contracts. The inclusion of these charges would reduce the total return figures for all periods shown. The Small Cap Growth Fund&rsquo;s past investment performance does not necessarily indicate how it will perform in the future.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance, Narrative222false0rr_PerformanceInformationIllustratesVariabilityOfReturnsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The information below provides an illustration of how the Small Cap Growth Fund's performance has varied over time.falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInclude the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance, Information Illustrates Variability of Returns223false0rr_PerformancePastDoesNotIndicateFuturerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Small Cap Growth Fund's past investment performance does not necessarily indicate how it will perform in the future.falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInclude the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance, Past Does Not Indicate Future224false0rr_BarChartHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center"><b>Calendar Year Returns</b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart, Heading225false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">During the periods shown in the bar chart, the highest return for a quarter was 29.55% (quarter ended 06/30/03) and the lowest return for a quarter was -28.92% (quarter ended 09/30/01).</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart, Closing226false0rr_HighestQuarterlyReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00highest return for a quarterfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return, Label227false0rr_BarChartHighestQuarterlyReturnDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002003-06-30falsefalsetruefalsefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return Date228false0rr_BarChartHighestQuarterlyReturnrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.29550.2955falsefalsefalsefalsefalseOtherxbrli: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.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return229false0rr_LowestQuarterlyReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00lowest return for a quarterfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return, Label230false0rr_BarChartLowestQuarterlyReturnDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002001-09-30falsefalsetruefalsefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return Date231false0rr_BarChartLowestQuarterlyReturnrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2892-0.2892falsefalsefalsefalsefalseOtherxbrli: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.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return232false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Average Annual Total Returns</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>(periods ended December 31, 2010)</b></p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalsePerformance Table:233false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse14falsefalseUSDtruefalse{dei_LegalEntityAxis} : Wilshire VIT Small Cap Growth Fund {rr_ProspectusShareClassAxis} : Wilshire VIT Small Cap Growth Fund Shares 5/1/2011 - 5/1/2011 USD ($) $wvit_S000001043_C000002803http://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire VIT Small Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000001043Memberdei_LegalEntityAxisexplicitMemberfalsefalseWilshire VIT Small Cap Growth Fund Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_C000002803Memberrr_ProspectusShareClassAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseWilshire VIT Small Cap Growth Fund | Wilshire VIT Small Cap Growth Fund Shares234true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:235false0dei_TradingSymboldeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00&nbsp;falsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No authoritative reference available.falsefalseTrading Symbol236false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01150.0115falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement Fees237false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution and Service (12b-1) Fees238false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00360.0036falsefalsefalsefalsefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther Expenses239false0rr_NetExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01760.0176falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseTotal Annual Fund Operating Expenses240false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue179179falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, 1 YEAR241false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue554554falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, 3 YEARS242false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue954954falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, 5 YEARS243false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue20732073falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, 10 YEARS244false0rr_AnnualReturn2001rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2981-0.2981falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2001245false0rr_AnnualReturn2002rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.3893-0.3893falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2002246false0rr_AnnualReturn2003rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.59160.5916falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse2003247false0rr_AnnualReturn2004rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.0440.044falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse2004248false0rr_AnnualReturn2005rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.03650.0365falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2005249false0rr_AnnualReturn2006rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.11420.1142falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2006250false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.1390.139falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse2007251false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.4636-0.4636falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2008252false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.28390.2839falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse2009253false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.26230.2623falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2010254false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.26230.2623falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse1 Year255false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01990.0199falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse5 Years256false0rr_AverageAnnualReturnYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue-0.0203-0.0203falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse10 Years257false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse15falsefalsetruefalse{dei_LegalEntityAxis} : Wilshire VIT Small Cap Growth Fund {rr_PerformanceMeasureAxis} : Russell 2000 Growth Index (reflects no deduction for fees, expenses or taxes) 5/1/2011 - 5/1/2011 wvit_S000001043_r2kscghttp://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire VIT Small Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000001043Memberdei_LegalEntityAxisexplicitMemberfalsefalseRussell 2000 Growth Index (reflects no deduction for fees, expenses or taxes)rr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_r2kscgMemberrr_PerformanceMeasureAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseWilshire VIT Small Cap Growth Fund | Russell 2000 Growth Index (reflects no deduction for fees, expenses or taxes)258true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:259false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.29090.2909falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse1 Year260false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.0530.053falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse5 Years261false0rr_AverageAnnualReturnYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.03780.0378falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse10 Years262false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse16falsefalsetruefalse{dei_LegalEntityAxis} : Wilshire VIT International Equity Fund 5/1/2011 - 5/1/2011 wvit_S000001041http://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire VIT International Equity Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000001041Memberdei_LegalEntityAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseWilshire VIT International Equity Fund263true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:264false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 14pt Times New Roman, Times, Serif; margin: 0; text-align: center"><b>International Equity Fund</b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return265false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Investment Objective</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective:266false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The International Equity Fund (the &ldquo;Fund&rdquo;) seeks long-term growth of capital primarily through diversified holdings of marketable foreign equity investments.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective267false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Fees and Expenses of the International Equity Fund</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseFees and expenses of the fund:268false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">This table describes the fees and expenses that you may pay if you buy and hold shares of the International Equity Fund. The table below does not reflect expenses that apply to separate accounts or related annuity contracts, and if such expenses were reflected, fees would be higher.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseFees and expenses of the fund, narrative269false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment):</p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseAnnual fund operating expenses, heading270false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Portfolio Turnover</b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio turnover, heading271false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The International Equity Fund pays transaction costs, such as commissions, when it buys and sells securities (or &ldquo;turns over&rdquo; 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 International Equity Fund&rsquo;s performance. During the most recent fiscal year, the International Equity Fund&rsquo;s portfolio turnover rate was 29% of the average value of its portfolio.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio turnover, narrative272false0rr_PortfolioTurnoverRaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.290.29falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureThis element represents the rate of portfolio turnover presented as a percentage (SEC Form N-1A 2006-09-14 A.3.example.3 Portfolio Turnover A.3.instructions.5 Portfolio Turnover).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover Rate273false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Example:</b> This example is intended to help you compare the cost of investing in the International Equity Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 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 International Equity Fund&rsquo;s operating expenses remain the same. The example does not reflect expenses that apply to separate accounts or related annuity contracts, and if such expenses were reflected, fees would be higher. Although your actual costs may be higher or lower, based on these assumptions your costs would be:</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative274false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Principal Investment Strategies</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy, Heading275false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The International Equity Fund invests, under normal circumstances, at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in equity securities. The International Equity Fund invests in companies, wherever organized, which do business primarily outside the United States. The International Equity Fund intends to diversify investments among several countries and to have represented in its holdings business activities in not less than three different countries. The International Equity Fund invests primarily in equity securities of established companies that the sub-advisers believe have favorable characteristics and that are listed on foreign exchanges. The International Equity Fund may also invest in fixed-income securities of foreign governments and companies.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The International Equity Fund uses a multi-manager strategy with sub-advisers who may employ different strategies. PanAgora Asset Management, Inc. (&ldquo;PanAgora&rdquo;) and Thomas White International Ltd. (&ldquo;Thomas White&rdquo;) each manage a portion of the International Equity Fund&rsquo;s portfolio. PanAgora&rsquo;s international equity strategy seeks to reproduce the total return of the MSCI EAFE Index. Thomas White employs a value strategy with respect to its portion of the International Equity Fund.</p> falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy, Narrative276false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Principal Risks</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk, Heading277false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">You may lose money by investing in the International Equity Fund. In addition, investing in the International Equity Fund involves the following principal risks:</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Foreign Investment Risk.</i> Foreign investments often involve risks such as political instability, differences in financial reporting standards and less stringent regulation of securities markets.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Emerging Market Risk. </i>Foreign investment risk may be particularly high to the extent the International Equity Fund invests in securities of issuers based in countries with developing economies (i.e., emerging markets). These securities may present market, credit, currency, liquidity, legal, political and other risks different from, or greater than, the risks of investing in developed foreign (non-U.S.) countries.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Equity Risk. </i>A principal risk of investing in the International Equity Fund is equity risk. This is the risk that the prices of stocks held by the International Equity Fund will change due to general market and economic conditions, perceptions regarding the industries in which the companies participate, and each company&rsquo;s particular circumstances. Equity investments, including common stocks, tend to be more volatile than bonds and money market instruments. The value of the International Equity Fund&rsquo;s shares will go up and down due to movement in the collective returns of the individual securities held by the International Equity Fund. Because common stocks are subordinate to preferred stocks in a company&rsquo;s capital structure, in a company liquidation, the claims of secured and unsecured creditors and owners of bonds and preferred stocks take precedence over the claims of common stock shareholders.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Currency Risk. </i>Non-U.S. dollar-denominated securities are subject to fluctuations in the exchange rates between the U.S. dollar and foreign currencies which may negatively affect an investment. Adverse changes in exchange rates may erode or reverse any gains produced by foreign currency denominated investments, and may widen any losses.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Small Cap Risk. </i>Small-cap companies may lack the management experience, financial resources, product diversity and competitive strengths of larger companies, and may be traded less frequently. These companies may be in the developmental stage or may be older companies undergoing significant changes. Small-cap companies may also be subject to greater business risks and more sensitive to changes in economic conditions than larger more established companies. As a result, the prices of small-cap companies may rise and fall more sharply.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Market Risk.</i> For equity securities, stock market movements will affect the International Equity Fund&rsquo;s share price on a daily basis. Declines in value are possible because of declines in the stock market in general or because of a decline in the specific securities held by the International Equity Fund. There is also the possibility that the price of the security will fall because the market perceives that there is or will be a deterioration in the fundamental value of the issuer or poor earnings performance by the issuer. Market risk may affect a single company, industry, sector or the market as a whole. For debt securities, the market value of a security may move up and down, sometimes rapidly and unpredictably. Market risk may affect a single issuer, an industry, a sector or the bond market as a whole.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Recent Market Events Risk.</i> The equity and debt capital markets in the U.S. and elsewhere have experienced unprecedented volatility in the past several years. This financial crisis had caused a significant decline in the value and liquidity of many securities and may create a higher degree of volatility in the net asset values of many mutual funds, including the Fund. Because these events are unprecedented, it is difficult to predict their magnitude or duration. Changes in market conditions will not have the same impact on all types of securities.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">In response to the crisis, the U.S. Government and the Federal Reserve have taken steps to support financial markets. The withdrawal of this support could negatively impact the value and liquidity of certain securities. In addition, legislation recently enacted in the U.S. calls for changes in many aspects of financial regulation. The impact of the legislation on the markets, and the practical implications for market participants, may not be fully known for some time.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Portfolio Strategy Risk. </i>The investment performance of the International Equity Fund is in part dependent upon a sub-adviser&rsquo;s skill in making appropriate investments. To the extent that the International Equity Fund&rsquo;s investments differ from the portfolio represented by the benchmark, there exists the potential for volatility of the return of the International Equity Fund relative to its index. As the industry and sector composition of the market or index changes over time, the implementation of the International Equity Fund&rsquo;s strategy can lead to substantial differences in the sector or industry allocation of the International Equity Fund relative to the market or index.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Multi-Managed Fund Risk. </i>The International Equity Fund is a multi-managed fund with multiple sub-advisers who employ different strategies. As a result, the International Equity Fund may have buy and sell transactions in the same security on the same day.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Asset Allocation Risk. </i>Although asset allocation among different asset categories and investment strategies generally reduces risk and exposure to any one category or strategy, the risk remains that the Adviser may favor an asset category or investment strategy that performs poorly relative to other asset categories and investment strategies.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Investment Style Risk. </i>During certain market conditions, a fund with a more specific investment style (such as value or growth) may perform less well than a fund that allows greater flexibility in the investment of assets.</p> falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk, Narrative278false0rr_RiskLoseMoneyrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00You may lose money by investing in the International Equity Fund. falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringSummarize the principal risks of investing in the Fund, including the risks to which the Fund's portfolio as a whole is subject and the circumstances reasonably likely to affect adversely the Fund's net asset value, yield, and total return. Unless the Fund is a Money Market Fund, disclose that loss of money is a risk of investing in the Fund. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Subsection b falsefalseMay Lose Money279false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Performance</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table, Heading280false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The information below provides an illustration of how the International Equity Fund&rsquo;s performance has varied over time. The bar chart and table provide some indication of the risks of investing in the International Equity Fund by showing the changes in the Fund&rsquo;s investment performance from year to year during the periods indicated and by showing how the average annual total returns for the one-, five- and ten-year periods compare with a broad-based securities market index. The total return figures do not reflect expenses that apply to the separate account or related annuity contracts. The inclusion of these charges would reduce the total return figures for all periods shown. The International Equity Fund&rsquo;s past investment performance does not necessarily indicate how it will perform in the future.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance, Narrative281false0rr_PerformanceInformationIllustratesVariabilityOfReturnsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The information below provides an illustration of how the International Equity Fund's performance has varied over time. falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInclude the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance, Information Illustrates Variability of Returns282false0rr_PerformancePastDoesNotIndicateFuturerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The International Equity Fund's past investment performance does not necessarily indicate how it will perform in the future.falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInclude the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance, Past Does Not Indicate Future283false0rr_BarChartHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center"><b>Calendar Year Returns</b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart, Heading284false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">During the periods shown in the bar chart, the highest return for a quarter was 24.58% (quarter ended 06/30/09) and the lowest return for a quarter was -22.22% (quarter ended 09/30/02).</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart, Closing285false0rr_HighestQuarterlyReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00highest return for a quarterfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return, Label286false0rr_BarChartHighestQuarterlyReturnDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002009-06-30falsefalsetruefalsefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return Date287false0rr_BarChartHighestQuarterlyReturnrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.24580.2458falsefalsefalsefalsefalseOtherxbrli: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.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return288false0rr_LowestQuarterlyReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00lowest return for a quarterfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return, Label289false0rr_BarChartLowestQuarterlyReturnDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002002-09-30falsefalsetruefalsefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return Date290false0rr_BarChartLowestQuarterlyReturnrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2222-0.2222falsefalsefalsefalsefalseOtherxbrli: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.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return291false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Average Annual Total Returns</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>(periods ended December 31, 2010)</b></p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalsePerformance Table:292false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse17falsefalseUSDtruefalse{dei_LegalEntityAxis} : Wilshire VIT International Equity Fund {rr_ProspectusShareClassAxis} : Wilshire VIT International Equity Fund Shares 5/1/2011 - 5/1/2011 USD ($) $wvit_S000001041_C000002801http://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire VIT International Equity Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000001041Memberdei_LegalEntityAxisexplicitMemberfalsefalseWilshire VIT International Equity Fund Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_C000002801Memberrr_ProspectusShareClassAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseWilshire VIT International Equity Fund | Wilshire VIT International Equity Fund Shares293true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:294false0dei_TradingSymboldeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00&nbsp;falsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No authoritative reference available.falsefalseTrading Symbol295false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.010.01falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement Fees296false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution and Service (12b-1) Fees297false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00510.0051falsefalsefalsefalsefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther Expenses298false0rr_NetExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01760.0176falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseTotal Annual Fund Operating Expenses299false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue179179falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, 1 YEAR300false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue554554falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, 3 YEARS301false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue954954falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, 5 YEARS302false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue20732073falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, 10 YEARS303false0rr_AnnualReturn2001rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2635-0.2635falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2001304false0rr_AnnualReturn2002rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2099-0.2099falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2002305false0rr_AnnualReturn2003rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.32480.3248falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse2003306false0rr_AnnualReturn2004rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.10610.1061falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse2004307false0rr_AnnualReturn2005rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.10120.1012falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2005308false0rr_AnnualReturn2006rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.23760.2376falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2006309false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.08730.0873falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse2007310false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.4375-0.4375falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2008311false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.31020.3102falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse2009312false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.10040.1004falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2010313false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.10040.1004falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse1 Year314false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01760.0176falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse5 Years315false0rr_AverageAnnualReturnYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00240.0024falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse10 Years316false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse18falsefalsetruefalse{dei_LegalEntityAxis} : Wilshire VIT International Equity Fund {rr_PerformanceMeasureAxis} : MSCI EAFE Index (reflects no deduction for fees, expenses or taxes) 5/1/2011 - 5/1/2011 wvit_S000001041_msciiehttp://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire VIT International Equity Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000001041Memberdei_LegalEntityAxisexplicitMemberfalsefalseMSCI EAFE Index (reflects no deduction for fees, expenses or taxes)rr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_msciieMemberrr_PerformanceMeasureAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseWilshire VIT International Equity Fund | MSCI EAFE Index (reflects no deduction for fees, expenses or taxes)317true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:318false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.07750.0775falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse1 Year319false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.02460.0246falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse5 Years320false0rr_AverageAnnualReturnYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.0350.035falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse10 Years321false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse19falsefalsetruefalse{dei_LegalEntityAxis} : Wilshire VIT Socially Responsible Fund 5/1/2011 - 5/1/2011 wvit_S000001044http://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire VIT Socially Responsible Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000001044Memberdei_LegalEntityAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseWilshire VIT Socially Responsible Fund322true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:323false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 14pt Times New Roman, Times, Serif; margin: 0; text-align: center"><b>Socially Responsible Fund</b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return324false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Investment Objective</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective:325false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The Socially Responsible Fund (the &ldquo;Fund&rdquo;) seeks long-term growth of capital, current income and growth of income.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective326false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Fees and Expenses of the Socially Responsible Fund</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseFees and expenses of the fund:327false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">This table describes the fees and expenses that you may pay if you buy and hold shares of the Socially Responsible Fund. The table below does not reflect expenses that apply to separate accounts or related annuity contracts, and if such expenses were reflected, fees would be higher.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseFees and expenses of the fund, narrative328false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment):</p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseAnnual fund operating expenses, heading329false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Portfolio Turnover</b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio turnover, heading330false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The Socially Responsible Fund pays transaction costs, such as commissions, when it buys and sells securities (or &ldquo;turns over&rdquo; 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 Socially Responsible Fund&rsquo;s performance. During the most recent fiscal year, the Socially Responsible Fund&rsquo;s portfolio turnover rate was 53% of the average value of its portfolio.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio turnover, narrative331false0rr_PortfolioTurnoverRaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.530.53falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureThis element represents the rate of portfolio turnover presented as a percentage (SEC Form N-1A 2006-09-14 A.3.example.3 Portfolio Turnover A.3.instructions.5 Portfolio Turnover).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover Rate332false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Example:</b> This example is intended to help you compare the cost of investing in the Socially Responsible Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 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 Socially Responsible Fund&rsquo;s operating expenses remain the same. The example does not reflect expenses that apply to separate accounts or related annuity contracts, and if such expenses were reflected, fees would be higher. Although your actual costs may be higher or lower, based on these assumptions your costs would be:</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative333false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Principal Investment Strategies</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy, Heading334false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The Socially Responsible Fund pursues its objective through a diversified portfolio composed primarily of marketable equity securities (including common stocks, preferred stocks and debt securities convertible into common stocks of seasoned U.S.-traded companies). The Socially Responsible Fund seeks to achieve its objective by investing in issuers that meet certain investment and socially responsible criteria. Investments in equity securities are limited to issuers which, in the sub-adviser&rsquo;s judgment, meet the following criteria:</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">Socially responsible areas of focus for inclusion:</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 48px">&nbsp;</td> <td style="width: 24px; font-family: Symbol"> <font style="font: 11pt Symbol">&#183;</font></td> <td> <font style="font-size: 11pt">Companies with strong environmental management systems, eco-efficiency programs, health and safety procedures, and an overall commitment to continuously improve on environmental matters</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 48px">&nbsp;</td> <td style="width: 24px; font-family: Symbol"> <font style="font: 11pt Symbol">&#183;</font></td> <td> <font style="font-size: 11pt">Companies with competitive employee benefit initiatives, workplace programs and non-discrimination policies</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 48px">&nbsp;</td> <td style="width: 24px; font-family: Symbol"> <font style="font: 11pt Symbol">&#183;</font></td> <td> <font style="font-size: 11pt">Companies with good transparency and shareholder engagement</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">Socially responsible areas of exclusion based on revenues:</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 48px">&nbsp;</td> <td style="width: 24px; font-family: Symbol"> <font style="font: 11pt Symbol">&#183;</font></td> <td> <font style="font-size: 11pt">Major tobacco, alcohol and gaming device manufacturers</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 48px">&nbsp;</td> <td style="width: 24px; font-family: Symbol"> <font style="font: 11pt Symbol">&#183;</font></td> <td> <font style="font-size: 11pt">Major weapons manufacturers</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 48px">&nbsp;</td> <td style="width: 24px; font-family: Symbol"> <font style="font: 11pt Symbol">&#183;</font></td> <td> <font style="font-size: 11pt">Major nuclear power generators</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <table align="center" cellspacing="0" cellpadding="0" style="font: 12pt Times New Roman, Times, Serif; width: 100%"> <tr style="vertical-align: top"> <td style="width: 48px">&nbsp;</td> <td style="width: 24px; font-family: Symbol"> <font style="font: 11pt Symbol">&#183;</font></td> <td> <font style="font-size: 11pt">Major pornographic content manufacturers</font></td></tr> </table> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The Adviser allocates the Fund&rsquo;s assets between two investment strategies: an appreciation strategy and a large cap core strategy.</p> falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy, Narrative335false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Principal Risks</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk, Heading336false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">You may lose money by investing in the Socially Responsible Fund. In addition, investing in the Socially Responsible Fund involves the following principal risks:</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Socially Responsible Risk.</i>&nbsp;The Socially Responsible Fund only invests in companies that meet its criteria for socially responsible investing.&nbsp;Because of this restriction, the investments that the sub-adviser may choose from may be more limited than those of a fund that is not restricted to investing in companies that meet social criteria.&nbsp;As a result, the sub-adviser may pass up opportunities to buy certain securities when it is otherwise advantageous to do so or may sell certain securities when it is disadvantageous to do so.&nbsp;In addition, investing in socially responsible companies may result in the Fund investing more or less in a specific sector of the economy relative to its benchmark.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Equity Risk. </i>A principal risk of investing in the Socially Responsible Fund is equity risk. This is the risk that the prices of stocks held by the Socially Responsible Fund will change due to general market and economic conditions, perceptions regarding the industries in which the companies participate, and each company&rsquo;s particular circumstances. Equity investments, including common stocks, tend to be more volatile than bonds and money market instruments. The value of the Socially Responsible Fund&rsquo;s shares will go up and down due to movement in the collective returns of the individual securities held by the Socially Responsible Fund. Because common stocks are subordinate to preferred stocks in a company&rsquo;s capital structure, in a company liquidation, the claims of secured and unsecured creditors and owners of bonds and preferred stocks take precedence over the claims of common stock shareholders.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Market Risk.</i> For equity securities, stock market movements will affect the Socially Responsible Fund&rsquo;s share price on a daily basis. Declines in value are possible because of declines in the stock market in general or because of a decline in the specific securities held by the Socially Responsible Fund. There is also the possibility that the price of the security will fall because the market perceives that there is or will be a deterioration in the fundamental value of the issuer or poor earnings performance by the issuer. Market risk may affect a single company, industry, sector or the market as a whole. For debt securities, the market value of a security may move up and down, sometimes rapidly and unpredictably. Market risk may affect a single issuer, an industry, a sector or the bond market as a whole.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Recent Market Events Risk. </i>The equity and debt capital markets in the U.S. and elsewhere have experienced unprecedented volatility in the past several years. This financial crisis had caused a significant decline in the value and liquidity of many securities and may create a higher degree of volatility in the net asset values of many mutual funds, including the Fund. Because these events are unprecedented, it is difficult to predict their magnitude or duration. Changes in market conditions will not have the same impact on all types of securities.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">In response to the crisis, the U.S. Government and the Federal Reserve have taken steps to support financial markets. The withdrawal of this support could negatively impact the value and liquidity of certain securities. In addition, legislation recently enacted in the U.S. calls for changes in many aspects of financial regulation. The impact of the legislation on the markets, and the practical implications for market participants, may not be fully known for some time.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Portfolio Strategy Risk. </i>The investment performance of the Socially Responsible Fund is in part dependent upon either Wilshire&rsquo;s or the sub-adviser&rsquo;s skill in making appropriate investments. To the extent that the Socially Responsible Fund&rsquo;s investments differ from the portfolio represented by the benchmark, there exists the potential for volatility of the return of the Socially Responsible Fund relative to its index. As the industry and sector composition of the market or index changes over time, the implementation of the Socially Responsible Fund&rsquo;s strategy can lead to substantial differences in the sector or industry allocation of the Socially Responsible Fund relative to the market or index.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Preferred Stock Risk. </i>Preferred stocks are typically subordinated to bonds and other debt instruments in a company&rsquo;s capital structure, in terms of priority to corporate income, and therefore will be subject to greater credit risk than payments on debt securities. Unlike interest payments on debt securities, preferred stock dividends are payable only if declared by the issuer&rsquo;s board of directors. Preferred stock also may be subject to optional or mandatory redemption provisions.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>&nbsp;</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Convertible Securities Risk. </i>Convertible securities are fixed income securities that may be converted at a stated price within a specific period of time into a certain quantity of common stock of the same or a different issuer. As with all fixed income securities, the market values of convertible securities tend to decline as interest rates increase and increase as interest rates declines. Convertible securities are senior to common stocks in an issuer&rsquo;s capital structure, but are usually subordinated to similar non-convertible securities.</p> falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk, Narrative337false0rr_RiskLoseMoneyrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00You may lose money by investing in the Socially Responsible Fund. falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringSummarize the principal risks of investing in the Fund, including the risks to which the Fund's portfolio as a whole is subject and the circumstances reasonably likely to affect adversely the Fund's net asset value, yield, and total return. Unless the Fund is a Money Market Fund, disclose that loss of money is a risk of investing in the Fund. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Subsection b falsefalseMay Lose Money338false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Performance</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table, Heading339false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The information below provides an illustration of how the Socially Responsible Fund&rsquo;s performance has varied over time. The bar chart and table provide some indication of the risks of investing in the Socially Responsible Fund by showing the changes in the Fund&rsquo;s investment performance from year to year during the periods indicated and by showing how the average annual total returns for the one-, five- and ten-year periods compare with a broad-based securities market index. The total return figures do not reflect expenses that apply to the separate account or related annuity contracts. The inclusion of these charges would reduce the total return figures for all periods shown. The Socially Responsible Fund&rsquo;s past investment performance does not necessarily indicate how it will perform in the future.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance, Narrative340false0rr_PerformanceInformationIllustratesVariabilityOfReturnsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The information below provides an illustration of how the Socially Responsible Fund's performance has varied over time. falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInclude the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance, Information Illustrates Variability of Returns341false0rr_PerformancePastDoesNotIndicateFuturerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The Socially Responsible Fund's past investment performance does not necessarily indicate how it will perform in the future.falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInclude the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance, Past Does Not Indicate Future342false0rr_BarChartHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center"><b>Calendar Year Returns</b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart, Heading343false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">During the periods shown in the bar chart, the highest return for a quarter was 16.04% (quarter ended 06/30/03) and the lowest return for a quarter was -23.64% (quarter ended 12/31/08).</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart, Closing344false0rr_HighestQuarterlyReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00highest return for a quarterfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return, Label345false0rr_BarChartHighestQuarterlyReturnDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002003-06-30falsefalsetruefalsefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return Date346false0rr_BarChartHighestQuarterlyReturnrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.16040.1604falsefalsefalsefalsefalseOtherxbrli: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.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return347false0rr_LowestQuarterlyReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00lowest return for a quarterfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return, Label348false0rr_BarChartLowestQuarterlyReturnDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002008-12-31falsefalsetruefalsefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return Date349false0rr_BarChartLowestQuarterlyReturnrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2364-0.2364falsefalsefalsefalsefalseOtherxbrli: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.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return350false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Average Annual Total Returns</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>(periods ended December 31, 2010)</b></p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalsePerformance Table:351false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse20falsefalseUSDtruefalse{dei_LegalEntityAxis} : Wilshire VIT Socially Responsible Fund {rr_ProspectusShareClassAxis} : Wilshire VIT Socially Responsible Fund Shares 5/1/2011 - 5/1/2011 USD ($) $wvit_S000001044_C000002804http://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire VIT Socially Responsible Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000001044Memberdei_LegalEntityAxisexplicitMemberfalsefalseWilshire VIT Socially Responsible Fund Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_C000002804Memberrr_ProspectusShareClassAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseWilshire VIT Socially Responsible Fund | Wilshire VIT Socially Responsible Fund Shares352true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:353false0dei_TradingSymboldeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00&nbsp;falsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No authoritative reference available.falsefalseTrading Symbol354false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00850.0085falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement Fees355false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution and Service (12b-1) Fees356false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00210.0021falsefalsefalsefalsefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther Expenses357false0rr_NetExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01310.0131falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseTotal Annual Fund Operating Expenses358false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue133133falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, 1 YEAR359false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue415415falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, 3 YEARS360false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue718718falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, 5 YEARS361false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue15791579falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, 10 YEARS362false0rr_AnnualReturn2001rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.0732-0.0732falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2001363false0rr_AnnualReturn2002rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.1346-0.1346falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2002364false0rr_AnnualReturn2003rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.28430.2843falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse2003365false0rr_AnnualReturn2004rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.1330.133falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse2004366false0rr_AnnualReturn2005rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05130.0513falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2005367false0rr_AnnualReturn2006rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.20520.2052falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2006368false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.0263-0.0263falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse2007369false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.4039-0.4039falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2008370false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.21510.2151falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse2009371false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.11760.1176falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2010372false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.11760.1176falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse1 Year373false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue-0.0102-0.0102falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse5 Years374false0rr_AverageAnnualReturnYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01540.0154falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse10 Years375false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse21falsefalsetruefalse{dei_LegalEntityAxis} : Wilshire VIT Socially Responsible Fund {rr_PerformanceMeasureAxis} : S&P 500 Index (reflects no deduction for fees, expenses or taxes) 5/1/2011 - 5/1/2011 wvit_S000001044_snp500srhttp://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire VIT Socially Responsible Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000001044Memberdei_LegalEntityAxisexplicitMemberfalsefalseS&P 500 Index (reflects no deduction for fees, expenses or taxes)rr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_snp500srMemberrr_PerformanceMeasureAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseWilshire VIT Socially Responsible Fund | S&P 500 Index (reflects no deduction for fees, expenses or taxes)376true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:377false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.15060.1506falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse1 Year378false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.02290.0229falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse5 Years379false0rr_AverageAnnualReturnYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01410.0141falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse10 Years380false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse22falsefalsetruefalse{dei_LegalEntityAxis} : Wilshire 2015 ETF Fund 5/1/2011 - 5/1/2011 wvit_S000011650http://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire 2015 ETF Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000011650Memberdei_LegalEntityAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseWilshire 2015 ETF Fund381true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:382false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 14pt Times New Roman, Times, Serif; margin: 0; text-align: center"><b>FUND SUMMARIES</b></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center">&nbsp;</p> <p style="font: 14pt Times New Roman, Times, Serif; margin: 0; text-align: center"><b>Wilshire 2015 ETF Fund</b></p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return383false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Investment Objective</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective:384false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The Wilshire 2015 ETF Fund&rsquo;s (&ldquo;2015 ETF Fund&rdquo; or &ldquo;Fund&rdquo;) investment objective is to provide high total return until its target retirement date. Thereafter the 2015 ETF Fund&rsquo;s objective will be to seek high current income and,</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective385false0rr_ObjectiveSecondaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">as a secondary objective, capital appreciation. The investment objective of the 2015 ETF Fund may be changed without a shareholder vote.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseSecondary objectives386false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Fees and Expenses of the 2015 ETF Fund</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseFees and expenses of the fund:387false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">This table describes the fees and expenses that you may pay if you buy and hold shares of the 2015 ETF Fund. The table below does not reflect expenses that apply to separate accounts or related annuity contracts, and if such expenses were reflected, fees would be higher.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseFees and expenses of the fund, narrative388false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment):</p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseAnnual fund operating expenses, heading389false0rr_FeeWaiverOrReimbursementOverAssetsDateOfTerminationrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002012-04-30falsefalsefalsefalsefalseOtherus-types:dateStringItemTypenormalizedstringThis element represents the date of expected termination of any expense reimbursement or fee waiver arrangements that reduce any Fund operating expenses (SEC Form N-1A 2006-09-14 A.3.table.1.11 Total Annual Fund Operating Expenses A.3.instructions.3.e).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph e -Subsection instructions falsefalseDate Of Termination390false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Portfolio Turnover</b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio turnover, heading391false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The 2015 ETF Fund pays transaction costs, such as commissions, when it buys and sells securities (or &ldquo;turns over&rdquo; 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 2015 ETF Fund&rsquo;s performance. During the most recent fiscal year, the 2015 ETF Fund&rsquo;s portfolio turnover rate was 37% of the average value of its portfolio.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio turnover, narrative392false0rr_PortfolioTurnoverRaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.370.37falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureThis element represents the rate of portfolio turnover presented as a percentage (SEC Form N-1A 2006-09-14 A.3.example.3 Portfolio Turnover A.3.instructions.5 Portfolio Turnover).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover Rate393false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Example: </b>This example is intended to help you compare the cost of investing in the 2015 ETF Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 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 2015 ETF Fund&rsquo;s operating expenses remain the same. The example does not reflect expenses that apply to separate accounts or related annuity contracts, and if such expenses were reflected, fees would be higher. Although your actual costs may be higher or lower, based on these assumptions your costs would be:</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative394false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Principal Investment Strategies</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy, Heading395false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The 2015 ETF Fund operates under a fund of funds structure. The 2015 ETF Fund seeks to achieve its investment objective by investing primarily in a portfolio of unaffiliated exchange traded funds (&ldquo;ETFs&rdquo;), which are funds traded on national securities exchanges with listed securities, in accordance with weightings determined by Wilshire Associates Incorporated (&ldquo;Wilshire&rdquo;). The ETFs, in turn, in an attempt to approximate the investment performance of their respective benchmarks, invest in a variety of U.S. and foreign equity, debt, commodities, money market securities, futures and other instruments in accordance with their own investment policies and strategies.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">In managing the 2015 ETF Fund, Wilshire focuses on four key principles: asset allocation, portfolio structure, investment time horizon and continuous fund management. Asset allocation across appropriate asset classes is the central theme of Wilshire&rsquo;s investment philosophy. The 2015 ETF Fund invests in the ETFs according to a moderate asset allocation strategy designed for investors planning to retire in 2015, plus or minus two to three years. Wilshire seeks to reduce risk by investing in ETFs that are diversified within each asset class. The amounts invested in each of the ETFs will vary from time to time depending on the investment time horizon and Wilshire&rsquo;s assessment of business, economic and market conditions, including any potential advantage of price shifts between the equity markets and the fixed income markets. The 2015 ETF Fund&rsquo;s asset allocation will become more conservative over time. In general, however, Wilshire does not anticipate making frequent changes in asset allocation and will not attempt to time the market. As of the date of this Prospectus, the target asset allocation for the 2015 ETF Fund is 43% invested in ETFs which invest in fixed income securities and 57% invested in ETFs which invest in equity securities. Within 5 to 10 years after 2015, the 2015 ETF Fund&rsquo;s target asset allocation should be approximately 70% invested in ETFs which invest in fixed income securities and 30% in ETFs which invest in equity securities.</p> falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy, Narrative396false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Principal Risks</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk, Heading397false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">You may lose money by investing in the 2015 ETF Fund. In addition, by investing in the Fund, an investor assumes the same types of risks, either directly or indirectly, as investing in the ETFs. For the 2015 ETF Fund, the risks are as follows:</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>ETF Risk. </i>ETFs in which the 2015 ETF Fund may invest involve certain inherent risks generally associated with investments in a portfolio of common stocks, including the risk that the general level of stock prices may decline, thereby adversely affecting the value of each unit of the ETF. Moreover, an ETF may not fully replicate the performance of its benchmark index because of the temporary unavailability of certain index securities in the secondary market or discrepancies between the ETF and the index with respect to the weighting of securities or the number of stocks held. Investing in ETFs, which are investment companies, involve duplication of advisory fees and certain other expenses.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Fund of Funds Risk. </i>The Fund invest in ETFs. Shareholders of the Fund bear their proportionate share of the ETFs&rsquo; fees and expenses as well as their share of the Fund&rsquo;s fees and expenses. As a result, your cost of investing will be higher than the cost of investing directly in ETFs and may be higher than mutual funds that invest directly in stocks and bonds. Also, the Funds may be prevented from fully allocating assets to certain ETFs due to fund-of-funds investment limitations.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Future Developments. </i>An ETF may take advantage of other investment practices that are not currently contemplated for use by ETFs, or are not available but may yet be developed, to the extent such investment practices are consistent with an ETF&rsquo;s investment objective and legally permissible for the ETF. Such investment practices, if they arise, may involve risks that exceed those involved in the activities described above.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Market Risk. </i>For equity securities, stock market movements will affect an ETF&rsquo;s share price on a daily basis. Declines in value are possible because of declines in the stock market in general or because of a decline in the specific securities held by an ETF. There is also the possibility that the price of the security will fall because the market perceives that there is or will be a deterioration in the fundamental value of the issuer or poor earnings performance by the issuer. Market risk may affect a single company, industry, sector or the market as a whole. For debt securities, the market value of a security may move up and down, sometimes rapidly and unpredictably. Market risk may affect a single issuer, an industry, a sector or the bond market as a whole.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Recent Market Events Risk. </i>The equity and debt capital markets in the U.S. and elsewhere have experienced unprecedented volatility in the past several years. This financial crisis had caused a significant decline in the value and liquidity of many securities and may create a higher degree of volatility in the net asset values of many mutual funds, including the Fund. Because these events are unprecedented, it is difficult to predict their magnitude or duration. Changes in market conditions will not have the same impact on all types of securities.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">In response to the crisis, the U.S. Government and the Federal Reserve have taken steps to support financial markets. The withdrawal of this support could negatively impact the value and liquidity of certain securities. In addition, legislation recently enacted in the U.S. calls for changes in many aspects of financial regulation. The impact of the legislation on the markets, and the practical implications for market participants, may not be fully known for some time.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Portfolio Strategy Risk. </i>The performance of an ETF is in part dependent upon an ETF&rsquo;s investment adviser&rsquo;s skill in making appropriate investments. To the extent that an ETF&rsquo;s investments differ from the portfolio represented by the benchmark, there exists the potential for volatility of the return of the ETF relative to its index. As the industry and sector composition of the market or index changes over time, the implementation of an ETF&rsquo;s strategy can lead to substantial differences in the sector or industry allocation of the ETF relative to the market or index.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Capitalization Risk.</i> This is the risk of investments in small-capitalization companies. Investments in small-cap companies tend to be more volatile than investments in large-cap companies. An ETF&rsquo;s investments in smaller capitalization companies may have additional risks because these companies often have limited product lines, markets or financial resources. This risk is greater for those ETFs with higher asset allocations to small-cap equities.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Credit Risk. </i>For debt securities, credit risk is the possibility that an issuer or counterparty to a contract will fail to make timely payments of interest or principal to an ETF. The credit risk of an ETF depends on the credit quality of its underlying securities. In general, for debt securities, the lower the credit quality of an ETF&rsquo;s securities, the higher the ETF&rsquo;s risk, all other factors such as maturity being equal.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Currency Risk.</i> Non-U.S. dollar-denominated securities are subject to fluctuations in the exchange rates between the U.S. dollar and foreign currencies which may negatively affect an investment. Adverse changes in exchange rates may erode or reverse any gains produced by foreign currency denominated investments, and may widen any losses.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Derivatives Risk. </i>When an ETF uses derivatives (securities whose value is based upon the value of another security or an index) to hedge positions in the portfolio, any loss generated by the derivative security should be substantially offset by gains on the hedged investment and vice versa. While hedging can reduce or eliminate losses, it can also reduce or eliminate gains. To the extent that a derivative is not used as a hedge (i.e., for speculation), an ETF is directly exposed to the potential gains and losses of that derivative. Gains and losses from non-hedging derivative positions may be substantially greater than the derivative&rsquo;s original cost.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Equity Securities Risks.</i> Equity investments, including common stocks, tend to be more volatile than bonds or money market instruments. To the extent an ETF is invested in equity securities, the value of the ETF&rsquo;s shares will go up and down due to movement in the collective returns of the individual securities held by the ETF. Common stocks are subordinate to preferred stocks in a company&rsquo;s capital structure, and if a company is liquidated, the claims of secured and unsecured creditors and owners of bonds and preferred stocks take precedence over the claims of those who own common stocks.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Emerging Market Risk. </i>Foreign investment risk may be particularly high to the extent an ETF invests in emerging market securities of issuers based in countries with developing economies. These securities may present market, credit, currency, liquidity, legal, political and other risks different from, or greater than, the risks of investing in developed foreign (non-U.S.) countries.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Foreign (Non-U.S.) Risk.</i> An ETF&rsquo;s investments in securities of non-U.S. issuers may experience more rapid and extreme changes in value than investments in securities of U.S. companies. The securities markets of many non-U.S. countries are relatively small, with a limited number of companies typically representing a small number of industries. Non-U.S. issuers usually are not subject to the same degree of regulation as U.S. issuers. Reporting, accounting and auditing standards of non-U.S. countries differ, in some cases significantly, from U.S. standards. Nationalization, expropriation or confiscatory taxation, currency blockage, or political changes or diplomatic developments could adversely affect an ETF&rsquo;s investments in a country other than the United States. To the extent an ETF invests in a particular country or geographic region, the ETF may have more significant risk due to market changes or other factors affecting that country or region, including political instability and unpredictable economic conditions. This risk is greater for those ETFs with higher asset allocations to non-U.S. equities.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Inflation Risk. </i>This is the risk that the value of assets or income from an ETF&rsquo;s investments will be less in the future as inflation decreases the value of money. As inflation increases, the value of the ETF&rsquo;s assets can decline as can the value of distributions.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Interest Rate Risk. </i>For debt securities, interest rate risk is the possibility that the price will fall because of changing interest rates. In general, debt security prices move inversely to changes in interest rates. If interest rates rise, bond prices generally fall; if interest rates fall, bond prices generally rise. In addition, for a given change in interest rates, longer-maturity bonds fluctuate more in price (gaining or losing more in value) than shorter-maturity bonds.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Investment Style Risk. </i>During certain market conditions, an ETF with a more specific investment style (such as value or growth) may perform less well than an ETF that allows greater flexibility in the investment of assets.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Liquidity Risk.</i> An ETF may invest in certain securities that may be difficult or impossible to sell at a certain time and at a price that the ETF finds to be favorable. An ETF may have to accept an unfavorable price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on portfolio management or investment performance.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Prepayment Risk.</i> Mortgage-backed securities are subject to the risk of unanticipated prepayments of principal with respect to mortgages in the security&rsquo;s underlying pool of assets. While principal prepayments are passed through to the holders of the securities, prepayments also reduce the future payments on such securities and may reduce their value. Mortgage-backed securities are subject to the risk that an unexpected rise in interest rates will extend the life of a mortgage-backed security beyond the expected prepayment time, typically reducing the security&rsquo;s value. Mortgage-backed securities are subject to the risk that an unexpected decline in interest rates will contract the life of a mortgage-backed security, thereby affecting its prepayment schedule, which may affect the value of the security.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Real Estate Investment Trust Risk. </i>REITs are subject to a variety of factors affecting the real estate market generally, such as economic conditions, overbuilding, mortgage rates and availability. In addition, REITs have additional risks because REITs are dependent on the capability of their managers, may have limited diversification, and could be significantly affected by changes in tax laws.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Reinvestment Risk. </i>During periods of falling interest rates, a debt security with a high stated interest rate may be prepaid (or &ldquo;called&rdquo;) prior to its expected maturity date. If, during periods of falling interest rates, a debt security with a high stated interest rate is called, the unanticipated proceeds would likely be invested at lower interest rates, and an ETF&rsquo;s income or yield may decline. Call provisions, which may lead to reinvestment risk, are most common for intermediate- and long-term municipal, corporate and mortgage-backed securities. To the extent securities subject to call were acquired at a premium, the potential for appreciation in the event of a decline in interest rates may be limited and may even result in losses.</p> falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk, Narrative398false0rr_RiskLoseMoneyrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00You may lose money by investing in the 2015 ETF Fund. falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringSummarize the principal risks of investing in the Fund, including the risks to which the Fund's portfolio as a whole is subject and the circumstances reasonably likely to affect adversely the Fund's net asset value, yield, and total return. Unless the Fund is a Money Market Fund, disclose that loss of money is a risk of investing in the Fund. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Subsection b falsefalseMay Lose Money399false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Performance</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table, Heading400false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The information below provides an illustration of how the 2015 ETF Fund&rsquo;s performance has varied over time. The bar chart and table provide some indication of the risks of investing in the 2015 ETF Fund by showing the changes in the 2015 ETF Fund&rsquo;s investment performance from year to year during the periods indicated and by showing how the average annual total returns for the one-year and since inception periods compare with broad-based securities market indexes. The total return figures do not reflect expenses that apply to the separate account or related annuity contracts. The inclusion of these charges would reduce the total return figures for all periods shown. The 2015 ETF Fund&rsquo;s past investment performance does not necessarily indicate how it will perform in the future.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance, Narrative401false0rr_PerformanceInformationIllustratesVariabilityOfReturnsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The information below provides an illustration of how the 2015 ETF Fund's performance has varied over time. falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInclude the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance, Information Illustrates Variability of Returns402false0rr_PerformancePastDoesNotIndicateFuturerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The 2015 ETF Fund's past investment performance does not necessarily indicate how it will perform in the future.falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInclude the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance, Past Does Not Indicate Future403false0rr_BarChartHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center"><b>Calendar Year Returns</b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart, Heading404false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">During the periods shown in the bar chart, the highest return for a quarter was 12.34% (quarter ended 09/30/09) and the lowest return for a quarter was -11.00% (quarter ended 12/31/08).</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart, Closing405false0rr_HighestQuarterlyReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00highest return for a quarterfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return, Label406false0rr_BarChartHighestQuarterlyReturnDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002009-09-30falsefalsetruefalsefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return Date407false0rr_BarChartHighestQuarterlyReturnrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.12340.1234falsefalsefalsefalsefalseOtherxbrli: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.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return408false0rr_LowestQuarterlyReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00lowest return for a quarterfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return, Label409false0rr_BarChartLowestQuarterlyReturnDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002008-12-31falsefalsetruefalsefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return Date410false0rr_BarChartLowestQuarterlyReturnrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.11-0.11falsefalsefalsefalsefalseOtherxbrli: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.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return411false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Average Annual Total Returns</b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalsePerformance Table:412false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse23falsefalseUSDtruefalse{dei_LegalEntityAxis} : Wilshire 2015 ETF Fund {rr_ProspectusShareClassAxis} : Wilshire 2015 ETF Fund Shares 5/1/2011 - 5/1/2011 USD ($) $wvit_S000011650_C000032000http://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire 2015 ETF Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000011650Memberdei_LegalEntityAxisexplicitMemberfalsefalseWilshire 2015 ETF Fund Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_C000032000Memberrr_ProspectusShareClassAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseWilshire 2015 ETF Fund | Wilshire 2015 ETF Fund Shares413true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:414false0dei_TradingSymboldeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00&nbsp;falsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No authoritative reference available.falsefalseTrading Symbol415false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement Fees416false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution and Service (12b-1) Fees417false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00180.0018falsefalsefalsefalsefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther Expenses418false0rr_AcquiredFundFeesAndExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00220.0022falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseAcquired Fund Fees and Expenses419false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.0090.009falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph d -Subsection instructions falsefalseGross Annual Expenses420false0rr_FeeWaiverOrReimbursementOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue-0.0008-0.0008[1]falsefalsefalsefalsefalseOtherrr:NonPositivePure4TypepureTotal Annual Fund Operating Expenses. If there were expense reimbursement or fee waiver arrangements that reduced any Fund operating expenses and will continue to reduce them for no less than one year from the effective date of the Fund's registration statement, a Fund may add two captions to the table one caption showing the amount of the expense reimbursement or fee waiver, and a second caption showing the Fund's net expenses after subtracting the fee reimbursement or expense waiver from the total fund operating expenses. The Fund should place these additional captions directly below the "Total Annual Fund Operating Expenses" caption of the table and should use appropriate descriptive captions, such as "Fee Waiver [and/or Expense Reimbursement]" and "Total Annual Fund Operating Expenses After Fee Waiver [and/or Expense Reimbursement]," respectively. If the Fund provides this disclosure, also disclose the period for which the expense reimbursement or fee waiver arrangement is expected to continue, and briefly describe who can terminate the arrangement and under what circumstances.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseLess Expense Reimbursement421false0rr_NetExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00820.0082falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseTotal Annual Fund Operating Expenses422false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue8484falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, 1 YEAR423false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue279279falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, 3 YEARS424false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue491491falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, 5 YEARS425false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue11001100falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, 10 YEARS426false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.04570.0457falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse2007427false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2418-0.2418falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2008428false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.20490.2049falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse2009429false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.11410.1141falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2010430false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.11410.1141falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse1 Year431false0rr_AverageAnnualReturnSinceInceptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.02490.0249falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseSince Inception432false0rr_AverageAnnualReturnInceptionDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse002006-05-01falsefalsetruefalsefalseOtherxbrli:dateItemTypedateReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 4 -Subsection b falsefalseInception Date433false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse24falsefalsetruefalse{dei_LegalEntityAxis} : Wilshire 2015 ETF Fund {rr_PerformanceMeasureAxis} : Wilshire 5000 Index (reflects no deduction for fees, expenses or taxes) 5/1/2011 - 5/1/2011 wvit_S000011650_w5k2015http://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire 2015 ETF Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000011650Memberdei_LegalEntityAxisexplicitMemberfalsefalseWilshire 5000 Index (reflects no deduction for fees, expenses or taxes)rr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_w5k2015Memberrr_PerformanceMeasureAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseWilshire 2015 ETF Fund | Wilshire 5000 Index (reflects no deduction for fees, expenses or taxes)434true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:435false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.17170.1717falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse1 Year436false0rr_AverageAnnualReturnSinceInceptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.0170.017falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseSince Inception437false0rr_AverageAnnualReturnInceptionDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse002006-05-01falsefalsetruefalsefalseOtherxbrli:dateItemTypedateReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 4 -Subsection b falsefalseInception Date438false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse25falsefalsetruefalse{dei_LegalEntityAxis} : Wilshire 2015 ETF Fund {rr_PerformanceMeasureAxis} : S&P Target Date 2015 Index (reflects no deduction for fees, expenses or taxes) 5/1/2011 - 5/1/2011 wvit_S000011650_snp2015http://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire 2015 ETF Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000011650Memberdei_LegalEntityAxisexplicitMemberfalsefalseS&P Target Date 2015 Index (reflects no deduction for fees, expenses or taxes)rr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_snp2015Memberrr_PerformanceMeasureAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseWilshire 2015 ETF Fund | S&P Target Date 2015 Index (reflects no deduction for fees, expenses or taxes)439true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:440false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.11850.1185falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse1 Year441false0rr_AverageAnnualReturnSinceInceptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.03590.0359falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseSince Inception442false0rr_AverageAnnualReturnInceptionDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse002006-05-01falsefalsetruefalsefalseOtherxbrli:dateItemTypedateReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 4 -Subsection b falsefalseInception Date443false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse26falsefalsetruefalse{dei_LegalEntityAxis} : Wilshire 2025 ETF Fund 5/1/2011 - 5/1/2011 wvit_S000011651http://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire 2025 ETF Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000011651Memberdei_LegalEntityAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseWilshire 2025 ETF Fund444true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:445false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 14pt Times New Roman, Times, Serif; margin: 0; text-align: center"><b>Wilshire 2025 ETF Fund</b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return446false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Investment Objective</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective:447false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The Wilshire 2025 ETF Fund&rsquo;s (&ldquo;2025 ETF Fund&rdquo; or &ldquo;Fund&rdquo;) investment objective is to provide high total return until its target retirement date. Thereafter the 2025 ETF Fund&rsquo;s objective will be to seek high current income and,</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective448false0rr_ObjectiveSecondaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">as a secondary objective, capital appreciation. The investment objective of the 2025 ETF Fund may be changed without a shareholder vote.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseSecondary objectives449false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Fees and Expenses of the 2025 ETF Fund</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseFees and expenses of the fund:450false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">This table describes the fees and expenses that you may pay if you buy and hold shares of the 2025 ETF Fund. The table below does not reflect expenses that apply to separate accounts or related annuity contracts, and if such expenses were reflected, fees would be higher.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseFees and expenses of the fund, narrative451false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment):</p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseAnnual fund operating expenses, heading452false0rr_FeeWaiverOrReimbursementOverAssetsDateOfTerminationrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002012-04-30falsefalsefalsefalsefalseOtherus-types:dateStringItemTypenormalizedstringThis element represents the date of expected termination of any expense reimbursement or fee waiver arrangements that reduce any Fund operating expenses (SEC Form N-1A 2006-09-14 A.3.table.1.11 Total Annual Fund Operating Expenses A.3.instructions.3.e).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph e -Subsection instructions falsefalseDate Of Termination453false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Portfolio Turnover</b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio turnover, heading454false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The 2025 ETF Fund pays transaction costs, such as commissions, when it buys and sells securities (or &ldquo;turns over&rdquo; 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 2025 ETF Fund&rsquo;s performance. During the most recent fiscal year, the 2025 ETF Fund&rsquo;s portfolio turnover rate was 32% of the average value of its portfolio.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio turnover, narrative455false0rr_PortfolioTurnoverRaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.320.32falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureThis element represents the rate of portfolio turnover presented as a percentage (SEC Form N-1A 2006-09-14 A.3.example.3 Portfolio Turnover A.3.instructions.5 Portfolio Turnover).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover Rate456false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Example:</b> This example is intended to help you compare the cost of investing in the 2025 ETF Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 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 2025 ETF Fund&rsquo;s operating expenses remain the same. The example does not reflect expenses that apply to separate accounts or related annuity contracts, and if such expenses were reflected, fees would be higher. Although your actual costs may be higher or lower, based on these assumptions your costs would be:</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative457false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Principal Investment Strategies</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy, Heading458false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The 2025 ETF Fund operates under a fund of funds structure. The 2025 ETF Fund seeks to achieve its investment objective by investing primarily in a portfolio of unaffiliated ETFs, which are funds traded on national securities exchanges with listed securities, in accordance with weightings determined by Wilshire Wilshire. The ETFs, in turn, in an attempt to approximate the investment performance of their respective benchmarks, invest in a variety of U.S. and foreign equity, debt, commodities, money market securities, futures and other instruments in accordance with their own investment policies and strategies.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">In managing the 2025 ETF Fund, Wilshire focuses on four key principles: asset allocation, portfolio structure, investment time horizon and continuous fund management. Asset allocation across appropriate asset classes is the central theme of Wilshire&rsquo;s investment philosophy. The 2025 ETF Fund invests in the ETFs according to a moderate asset allocation strategy designed for investors planning to retire in 2025, plus or minus two to three years. Wilshire seeks to reduce risk by investing in ETFs that are diversified within each asset class. The amounts invested in each of the ETFs will vary from time to time depending on the investment time horizon and Wilshire&rsquo;s assessment of business, economic and market conditions, including any potential advantage of price shifts between the equity markets and the fixed income markets. The 2025 ETF Fund&rsquo;s asset allocation will become more conservative over time. In general, however, Wilshire does not anticipate making frequent changes in asset allocation and will not attempt to time the market. As of the date of this Prospectus, the target asset allocation for the 2025 ETF Fund is 38% invested in ETFs which invest in fixed income securities and 62% invested in ETFs which invest in equity securities. Within 5 to 10 years after 2025, the 2025 ETF Fund&rsquo;s target asset allocation should be approximately 70% invested in ETFs which invest in fixed income securities and 30% in ETFs which invest in equity securities.</p> falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy, Narrative459false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Principal Risks</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk, Heading460false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">You may lose money by investing in the 2025 ETF Fund. In addition, by investing in the Fund, an investor assumes the same types of risks, either directly or indirectly, as investing in the ETFs. For the 2025 ETF Fund, the risks are as follows:</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>ETF Risk. </i>ETFs in which the 2025 ETF Fund may invest involve certain inherent risks generally associated with investments in a portfolio of common stocks, including the risk that the general level of stock prices may decline, thereby adversely affecting the value of each unit of the ETF. Moreover, an ETF may not fully replicate the performance of its benchmark index because of the temporary unavailability of certain index securities in the secondary market or discrepancies between the ETF and the index with respect to the weighting of securities or the number of stocks held. Investing in ETFs, which are investment companies, involve duplication of advisory fees and certain other expenses.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Fund of Funds Risk. </i>The Fund invest in ETFs. Shareholders of the Fund bear their proportionate share of the ETFs&rsquo; fees and expenses as well as their share of the Fund&rsquo;s fees and expenses. As a result, your cost of investing will be higher than the cost of investing directly in ETFs and may be higher than mutual funds that invest directly in stocks and bonds. Also, the Funds may be prevented from fully allocating assets to certain ETFs due to fund-of-funds investment limitations.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Future Developments. </i>An ETF may take advantage of other investment practices that are not currently contemplated for use by ETFs, or are not available but may yet be developed, to the extent such investment practices are consistent with an ETF&rsquo;s investment objective and legally permissible for the ETF. Such investment practices, if they arise, may involve risks that exceed those involved in the activities described above.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Market Risk. </i>For equity securities, stock market movements will affect an ETF&rsquo;s share price on a daily basis. Declines in value are possible because of declines in the stock market in general or because of a decline in the specific securities held by an ETF. There is also the possibility that the price of the security will fall because the market perceives that there is or will be a deterioration in the fundamental value of the issuer or poor earnings performance by the issuer. Market risk may affect a single company, industry, sector or the market as a whole. For debt securities, the market value of a security may move up and down, sometimes rapidly and unpredictably. Market risk may affect a single issuer, an industry, a sector or the bond market as a whole.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>&nbsp;</i></p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Recent Market Events Risk. </i>The equity and debt capital markets in the U.S. and elsewhere have experienced unprecedented volatility in the past several years. This financial crisis had caused a significant decline in the value and liquidity of many securities and may create a higher degree of volatility in the net asset values of many mutual funds, including the Fund. Because these events are unprecedented, it is difficult to predict their magnitude or duration. Changes in market conditions will not have the same impact on all types of securities.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">In response to the crisis, the U.S. Government and the Federal Reserve have taken steps to support financial markets. The withdrawal of this support could negatively impact the value and liquidity of certain securities. In addition, legislation recently enacted in the U.S. calls for changes in many aspects of financial regulation. The impact of the legislation on the markets, and the practical implications for market participants, may not be fully known for some time.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Portfolio Strategy Risk. </i>The performance of an ETF is in part dependent upon an ETF&rsquo;s investment adviser&rsquo;s skill in making appropriate investments. To the extent that an ETF&rsquo;s investments differ from the portfolio represented by the benchmark, there exists the potential for volatility of the return of the ETF relative to its index. As the industry and sector composition of the market or index changes over time, the implementation of an ETF&rsquo;s strategy can lead to substantial differences in the sector or industry allocation of the ETF relative to the market or index.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Capitalization Risk. </i>This is the risk of investments in small-capitalization companies. Investments in small-cap companies tend to be more volatile than investments in large-cap companies. An ETF&rsquo;s investments in smaller capitalization companies may have additional risks because these companies often have limited product lines, markets or financial resources. This risk is greater for those ETFs with higher asset allocations to small-cap equities.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Credit Risk. </i>For debt securities, credit risk is the possibility that an issuer or counterparty to a contract will fail to make timely payments of interest or principal to an ETF. The credit risk of an ETF depends on the credit quality of its underlying securities. In general, for debt securities, the lower the credit quality of an ETF&rsquo;s securities, the higher the ETF&rsquo;s risk, all other factors such as maturity being equal.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Currency Risk. </i>Non-U.S. dollar-denominated securities are subject to fluctuations in the exchange rates between the U.S. dollar and foreign currencies which may negatively affect an investment. Adverse changes in exchange rates may erode or reverse any gains produced by foreign currency denominated investments, and may widen any losses.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Derivatives Risk. </i>When an ETF uses derivatives (securities whose value is based upon the value of another security or an index) to hedge positions in the portfolio, any loss generated by the derivative security should be substantially offset by gains on the hedged investment and vice versa. While hedging can reduce or eliminate losses, it can also reduce or eliminate gains. To the extent that a derivative is not used as a hedge (i.e., for speculation), an ETF is directly exposed to the potential gains and losses of that derivative. Gains and losses from non-hedging derivative positions may be substantially greater than the derivative&rsquo;s original cost. To the extent that an ETF uses derivatives, an ETF will (to the extent required by applicable law) either (1) segregate cash or liquid assets in the prescribed amount or (2) otherwise &ldquo;cover&rdquo; its future obligations under the transaction, such as by holding an offsetting investment.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Equity Securities Risks. </i>Equity investments, including common stocks, tend to be more volatile than bonds or money market instruments. To the extent an ETF is invested in equity securities, the value of the ETF&rsquo;s shares will go up and down due to movement in the collective returns of the individual securities held by the ETF. Common stocks are subordinate to preferred stocks in a company&rsquo;s capital structure, and if a company is liquidated, the claims of secured and unsecured creditors and owners of bonds and preferred stocks take precedence over the claims of those who own common stocks.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Emerging Market Risk.</i> Foreign investment risk may be particularly high to the extent an ETF invests in emerging market securities of issuers based in countries with developing economies. These securities may present market, credit, currency, liquidity, legal, political and other risks different from, or greater than, the risks of investing in developed foreign (non-U.S.) countries.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Foreign (Non-U.S.) Risk. </i>An ETF&rsquo;s investments in securities of non-U.S. issuers may experience more rapid and extreme changes in value than investments in securities of U.S. companies. The securities markets of many non-U.S. countries are relatively small, with a limited number of companies typically representing a small number of industries. Non-U.S. issuers usually are not subject to the same degree of regulation as U.S. issuers. Reporting, accounting and auditing standards of non-U.S. countries differ, in some cases significantly, from U.S. standards. Nationalization, expropriation or confiscatory taxation, currency blockage, or political changes or diplomatic developments could adversely affect an ETF&rsquo;s investments in a country other than the United States. To the extent an ETF invests in a particular country or geographic region, the ETF may have more significant risk due to market changes or other factors affecting that country or region, including political instability and unpredictable economic conditions. This risk is greater for those ETFs with higher asset allocations to non-U.S. equities.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Inflation Risk. </i>This is the risk that the value of assets or income from an ETF&rsquo;s investments will be less in the future as inflation decreases the value of money. As inflation increases, the value of the ETF&rsquo;s assets can decline as can the value of distributions.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Interest Rate Risk. </i>For debt securities, interest rate risk is the possibility that the price will fall because of changing interest rates. In general, debt security prices move inversely to changes in interest rates. If interest rates rise, bond prices generally fall; if interest rates fall, bond prices generally rise. In addition, for a given change in interest rates, longer-maturity bonds fluctuate more in price (gaining or losing more in value) than shorter-maturity bonds.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Investment Style Risk. </i>During certain market conditions, an ETF with a more specific investment style (such as value or growth) may perform less well than an ETF that allows greater flexibility in the investment of assets.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Liquidity Risk. </i>An ETF may invest in certain securities that may be difficult or impossible to sell at a certain time and at a price that the ETF finds to be favorable. An ETF may have to accept an unfavorable price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on portfolio management or investment performance.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Prepayment Risk. </i>Mortgage-backed securities are subject to the risk of unanticipated prepayments of principal with respect to mortgages in the security&rsquo;s underlying pool of assets. While principal prepayments are passed through to the holders of the securities, prepayments also reduce the future payments on such securities and may reduce their value. Mortgage-backed securities are subject to the risk that an unexpected rise in interest rates will extend the life of a mortgage-backed security beyond the expected prepayment time, typically reducing the security&rsquo;s value. Mortgage-backed securities are subject to the risk that an unexpected decline in interest rates will contract the life of a mortgage-backed security, thereby affecting its prepayment schedule, which may affect the value of the security.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Real Estate Investment Trust Risk. </i>REITs are subject to a variety of factors affecting the real estate market generally, such as economic conditions, overbuilding, mortgage rates and availability. In addition, REITs have additional risks because REITs are dependent on the capability of their managers, may have limited diversification, and could be significantly affected by changes in tax laws.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Reinvestment Risk. </i>During periods of falling interest rates, a debt security with a high stated interest rate may be prepaid (or &ldquo;called&rdquo;) prior to its expected maturity date. If, during periods of falling interest rates, a debt security with a high stated interest rate is called, the unanticipated proceeds would likely be invested at lower interest rates, and an ETF&rsquo;s income or yield may decline. Call provisions, which may lead to reinvestment risk, are most common for intermediate- and long-term municipal, corporate and mortgage-backed securities. To the extent securities subject to call were acquired at a premium, the potential for appreciation in the event of a decline in interest rates may be limited and may even result in losses.</p> falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk, Narrative461false0rr_RiskLoseMoneyrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00You may lose money by investing in the 2025 ETF Fund.falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringSummarize the principal risks of investing in the Fund, including the risks to which the Fund's portfolio as a whole is subject and the circumstances reasonably likely to affect adversely the Fund's net asset value, yield, and total return. Unless the Fund is a Money Market Fund, disclose that loss of money is a risk of investing in the Fund. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Subsection b falsefalseMay Lose Money462false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Performance</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table, Heading463false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The information below provides an illustration of how the 2025 ETF Fund&rsquo;s performance has varied over time. The bar chart and table provide some indication of the risks of investing in the 2025 ETF Fund by showing the changes in the 2025 ETF Fund&rsquo;s investment performance from year to year during the periods indicated and by showing how the average annual total returns for the one-year and since inception periods compare with a broad-based securities market index. The total return figures do not reflect expenses that apply to the separate account or related annuity contracts. The inclusion of these charges would reduce the total return figures for all periods shown. The 2025 ETF Fund&rsquo;s past investment performance does not necessarily indicate how it will perform in the future.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance, Narrative464false0rr_PerformanceInformationIllustratesVariabilityOfReturnsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The information below provides an illustration of how the 2025 ETF Fund's performance has varied over time. falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInclude the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance, Information Illustrates Variability of Returns465false0rr_PerformancePastDoesNotIndicateFuturerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The 2025 ETF Fund's past investment performance does not necessarily indicate how it will perform in the future.falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInclude the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance, Past Does Not Indicate Future466false0rr_BarChartHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center"><b>Calendar Year Returns</b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart, Heading467false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">During the periods shown in the bar chart, the highest return for a quarter was 13.11% (quarter ended 09/30/09) and the lowest return for a quarter was -13.38% (quarter ended 12/31/08).</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart, Closing468false0rr_HighestQuarterlyReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00highest return for a quarterfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return, Label469false0rr_BarChartHighestQuarterlyReturnDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002009-09-30falsefalsetruefalsefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return Date470false0rr_BarChartHighestQuarterlyReturnrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.13110.1311falsefalsefalsefalsefalseOtherxbrli: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.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return471false0rr_LowestQuarterlyReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00lowest return for a quarterfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return, Label472false0rr_BarChartLowestQuarterlyReturnDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002008-12-31falsefalsetruefalsefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return Date473false0rr_BarChartLowestQuarterlyReturnrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.1338-0.1338falsefalsefalsefalsefalseOtherxbrli: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.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return474false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Average Annual Total Returns</b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalsePerformance Table:475false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse27falsefalseUSDtruefalse{dei_LegalEntityAxis} : Wilshire 2025 ETF Fund {rr_ProspectusShareClassAxis} : Wilshire 2025 ETF Fund Shares 5/1/2011 - 5/1/2011 USD ($) $wvit_S000011651_C000032001http://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire 2025 ETF Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000011651Memberdei_LegalEntityAxisexplicitMemberfalsefalseWilshire 2025 ETF Fund Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_C000032001Memberrr_ProspectusShareClassAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseWilshire 2025 ETF Fund | Wilshire 2025 ETF Fund Shares476true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:477false0dei_TradingSymboldeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00&nbsp;falsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No authoritative reference available.falsefalseTrading Symbol478false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement Fees479false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution and Service (12b-1) Fees480false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.0020.002falsefalsefalsefalsefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther Expenses481false0rr_AcquiredFundFeesAndExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00210.0021falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseAcquired Fund Fees and Expenses482false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00910.0091falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph d -Subsection instructions falsefalseGross Annual Expenses483false0rr_FeeWaiverOrReimbursementOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue-0.001-0.001[2]falsefalsefalsefalsefalseOtherrr:NonPositivePure4TypepureTotal Annual Fund Operating Expenses. If there were expense reimbursement or fee waiver arrangements that reduced any Fund operating expenses and will continue to reduce them for no less than one year from the effective date of the Fund's registration statement, a Fund may add two captions to the table one caption showing the amount of the expense reimbursement or fee waiver, and a second caption showing the Fund's net expenses after subtracting the fee reimbursement or expense waiver from the total fund operating expenses. The Fund should place these additional captions directly below the "Total Annual Fund Operating Expenses" caption of the table and should use appropriate descriptive captions, such as "Fee Waiver [and/or Expense Reimbursement]" and "Total Annual Fund Operating Expenses After Fee Waiver [and/or Expense Reimbursement]," respectively. If the Fund provides this disclosure, also disclose the period for which the expense reimbursement or fee waiver arrangement is expected to continue, and briefly describe who can terminate the arrangement and under what circumstances.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseLess Expense Reimbursement484false0rr_NetExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00810.0081falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseTotal Annual Fund Operating Expenses485false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue8383falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, 1 YEAR486false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue280280falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, 3 YEARS487false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue494494falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, 5 YEARS488false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue11101110falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, 10 YEARS489false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.04360.0436falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse2007490false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2811-0.2811falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2008491false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.2060.206falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse2009492false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.11770.1177falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2010493false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.11770.1177falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse1 Year494false0rr_AverageAnnualReturnSinceInceptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.0150.015falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseSince Inception495false0rr_AverageAnnualReturnInceptionDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse002006-05-01falsefalsetruefalsefalseOtherxbrli:dateItemTypedateReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 4 -Subsection b falsefalseInception Date496false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse28falsefalsetruefalse{dei_LegalEntityAxis} : Wilshire 2025 ETF Fund {rr_PerformanceMeasureAxis} : Wilshire 5000 Index (reflects no deduction for fees, expenses or taxes) 5/1/2011 - 5/1/2011 wvit_S000011651_w5k2025http://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire 2025 ETF Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000011651Memberdei_LegalEntityAxisexplicitMemberfalsefalseWilshire 5000 Index (reflects no deduction for fees, expenses or taxes)rr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_w5k2025Memberrr_PerformanceMeasureAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseWilshire 2025 ETF Fund | Wilshire 5000 Index (reflects no deduction for fees, expenses or taxes)497true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:498false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.17170.1717falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse1 Year499false0rr_AverageAnnualReturnSinceInceptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.0170.017falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseSince Inception500false0rr_AverageAnnualReturnInceptionDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse002006-05-01falsefalsetruefalsefalseOtherxbrli:dateItemTypedateReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 4 -Subsection b falsefalseInception Date501false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse29falsefalsetruefalse{dei_LegalEntityAxis} : Wilshire 2025 ETF Fund {rr_PerformanceMeasureAxis} : S&P Target Date 2025 Index (reflects no deduction for fees, expenses or taxes) 5/1/2011 - 5/1/2011 wvit_S000011651_snp2025http://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire 2025 ETF Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000011651Memberdei_LegalEntityAxisexplicitMemberfalsefalseS&P Target Date 2025 Index (reflects no deduction for fees, expenses or taxes)rr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_snp2025Memberrr_PerformanceMeasureAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseWilshire 2025 ETF Fund | S&P Target Date 2025 Index (reflects no deduction for fees, expenses or taxes)502true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:503false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.13820.1382falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse1 Year504false0rr_AverageAnnualReturnSinceInceptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.03090.0309falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseSince Inception505false0rr_AverageAnnualReturnInceptionDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse002006-05-01falsefalsetruefalsefalseOtherxbrli:dateItemTypedateReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 4 -Subsection b falsefalseInception Date506false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse30falsefalsetruefalse{dei_LegalEntityAxis} : Wilshire 2035 ETF Fund 5/1/2011 - 5/1/2011 wvit_S000011652http://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire 2035 ETF Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000011652Memberdei_LegalEntityAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseWilshire 2035 ETF Fund507true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:508false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 14pt Times New Roman, Times, Serif; margin: 0; text-align: center"><b>Wilshire 2035 ETF Fund</b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return509false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Investment Objective</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective:510false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The Wilshire 2035 ETF Fund&rsquo;s (&ldquo;2035 ETF Fund&rdquo; or &ldquo;Fund&rdquo;) investment objective is to provide high total return until its target retirement date. Thereafter the 2035 ETF Fund&rsquo;s objective will be to seek high current income and,</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective511false0rr_ObjectiveSecondaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">as a secondary objective, capital appreciation. The investment objective of the 2035 ETF Fund may be changed without a shareholder vote.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseSecondary objectives512false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Fees and Expenses of the 2035 ETF Fund</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseFees and expenses of the fund:513false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">This table describes the fees and expenses that you may pay if you buy and hold shares of the 2035 ETF Fund. The table below does not reflect expenses that apply to separate accounts or related annuity contracts, and if such expenses were reflected, fees would be higher.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseFees and expenses of the fund, narrative514false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Annual Fund Operating Expenses</b> (expenses that you pay each year as a percentage of the value of your investment):</p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseAnnual fund operating expenses, heading515false0rr_FeeWaiverOrReimbursementOverAssetsDateOfTerminationrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002012-04-30falsefalsefalsefalsefalseOtherus-types:dateStringItemTypenormalizedstringThis element represents the date of expected termination of any expense reimbursement or fee waiver arrangements that reduce any Fund operating expenses (SEC Form N-1A 2006-09-14 A.3.table.1.11 Total Annual Fund Operating Expenses A.3.instructions.3.e).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph e -Subsection instructions falsefalseDate Of Termination516false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Portfolio Turnover</b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio turnover, heading517false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The 2035 ETF Fund pays transaction costs, such as commissions, when it buys and sells securities (or &ldquo;turns over&rdquo; 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 2035 ETF Fund&rsquo;s performance. During the most recent fiscal year, the 2035 ETF Fund&rsquo;s portfolio turnover rate was 35% of the average value of its portfolio.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio turnover, narrative518false0rr_PortfolioTurnoverRaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.350.35falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureThis element represents the rate of portfolio turnover presented as a percentage (SEC Form N-1A 2006-09-14 A.3.example.3 Portfolio Turnover A.3.instructions.5 Portfolio Turnover).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover Rate519false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Example:</b> This example is intended to help you compare the cost of investing in the 2035 ETF Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 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 2035 ETF Fund&rsquo;s operating expenses remain the same. The example does not reflect expenses that apply to separate accounts or related annuity contracts, and if such expenses were reflected, fees would be higher. Although your actual costs may be higher or lower, based on these assumptions your costs would be:</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative520false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Principal Investment Strategies</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy, Heading521false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The 2035 ETF Fund operates under a fund of funds structure. The 2035 ETF Fund seeks to achieve its investment objective by investing primarily in a portfolio of unaffiliated exchange traded funds ETFs, which are funds traded on national securities exchanges with listed securities, in accordance with weightings determined by Wilshire. The ETFs, in turn, in an attempt to approximate the investment performance of their respective benchmarks, invest in a variety of U.S. and foreign equity, debt, commodities, money market securities, futures and other instruments in accordance with their own investment policies and strategies.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">In managing the 2035 ETF Fund, Wilshire focuses on four key principles: asset allocation, portfolio structure, investment time horizon and continuous fund management. Asset allocation across appropriate asset classes is the central theme of Wilshire&rsquo;s investment philosophy. The 2035 ETF Fund invests in the ETFs according to a moderate asset allocation strategy designed for investors planning to retire in 2035, plus or minus two to three years. Wilshire seeks to reduce risk by investing in ETFs that are diversified within each asset class. The amounts invested in each of the ETFs will vary from time to time depending on the investment time horizon and Wilshire&rsquo;s assessment of business, economic and market conditions, including any potential advantage of price shifts between the equity markets and the fixed income markets. The 2035 ETF Fund&rsquo;s asset allocation will become more conservative over time. In general, however, Wilshire does not anticipate making frequent changes in asset allocation and will not attempt to time the market. As of the date of this Prospectus, the target asset allocation for the 2035 ETF Fund is 28% invested in ETFs which invest in fixed income securities and 72% invested in ETFs which invest in equity securities. Within 5 to 10 years after 2035, the 2035 ETF Fund&rsquo;s target asset allocation should be approximately 70% invested in ETFs which invest in fixed income securities and 30% in ETFs which invest in equity securities.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy, Narrative522false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Principal Risks</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk, Heading523false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">You may lose money by investing in the 2035 ETF Fund. In addition, by investing in the Fund, an investor assumes the same types of risks, either directly or indirectly, as investing in the ETFs. For the 2035 ETF Fund, the risks are as follows:</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>ETF Risk. </i>ETFs in which the 2035 ETF Fund may invest involve certain inherent risks generally associated with investments in a portfolio of common stocks, including the risk that the general level of stock prices may decline, thereby adversely affecting the value of each unit of the ETF. Moreover, an ETF may not fully replicate the performance of its benchmark index because of the temporary unavailability of certain index securities in the secondary market or discrepancies between the ETF and the index with respect to the weighting of securities or the number of stocks held. Investing in ETFs, which are investment companies, involve duplication of advisory fees and certain other expenses.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Fund of Funds Risk.</i> The Fund invest in ETFs. Shareholders of the Fund bear their proportionate share of the ETFs&rsquo; fees and expenses as well as their share of the Fund&rsquo;s fees and expenses. As a result, your cost of investing will be higher than the cost of investing directly in ETFs and may be higher than mutual funds that invest directly in stocks and bonds. Also, the Funds may be prevented from fully allocating assets to certain ETFs due to fund-of-funds investment limitations.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Future Developments. </i>An ETF may take advantage of other investment practices that are not currently contemplated for use by ETFs, or are not available but may yet be developed, to the extent such investment practices are consistent with an ETF&rsquo;s investment objective and legally permissible for the ETF. Such investment practices, if they arise, may involve risks that exceed those involved in the activities described above.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Market Risk. </i>For equity securities, stock market movements will affect an ETF&rsquo;s share price on a daily basis. Declines in value are possible because of declines in the stock market in general or because of a decline in the specific securities held by an ETF. There is also the possibility that the price of the security will fall because the market perceives that there is or will be a deterioration in the fundamental value of the issuer or poor earnings performance by the issuer. Market risk may affect a single company, industry, sector or the market as a whole. For debt securities, the market value of a security may move up and down, sometimes rapidly and unpredictably. Market risk may affect a single issuer, an industry, a sector or the bond market as a whole.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Recent Market Events Risk.</i> The equity and debt capital markets in the U.S. and elsewhere have experienced unprecedented volatility in the past several years. This financial crisis had caused a significant decline in the value and liquidity of many securities and may create a higher degree of volatility in the net asset values of many mutual funds, including the Fund. Because these events are unprecedented, it is difficult to predict their magnitude or duration. Changes in market conditions will not have the same impact on all types of securities.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">In response to the crisis, the U.S. Government and the Federal Reserve have taken steps to support financial markets. The withdrawal of this support could negatively impact the value and liquidity of certain securities. In addition, legislation recently enacted in the U.S. calls for changes in many aspects of financial regulation. The impact of the legislation on the markets, and the practical implications for market participants, may not be fully known for some time.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Portfolio Strategy Risk. </i>The performance of an ETF is in part dependent upon an ETF&rsquo;s investment adviser&rsquo;s skill in making appropriate investments. To the extent that an ETF&rsquo;s investments differ from the portfolio represented by the benchmark, there exists the potential for volatility of the return of the ETF relative to its index. As the industry and sector composition of the market or index changes over time, the implementation of an ETF&rsquo;s strategy can lead to substantial differences in the sector or industry allocation of the ETF relative to the market or index.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">More information about risks, including additional risk facts not discussed above, is included in the &ldquo;More About Risks&rdquo; section and the 2035 ETF Fund&rsquo;s Statement of Additional Information.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Capitalization Risk. </i>This is the risk of investments in small-capitalization companies. Investments in small-cap companies tend to be more volatile than investments in large-cap companies. An ETF&rsquo;s investments in smaller capitalization companies may have additional risks because these companies often have limited product lines, markets or financial resources. This risk is greater for those ETFs with higher asset allocations to small-cap equities.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Credit Risk. </i>For debt securities, credit risk is the possibility that an issuer or counterparty to a contract will fail to make timely payments of interest or principal to an ETF. The credit risk of an ETF depends on the credit quality of its underlying securities. In general, for debt securities, the lower the credit quality of an ETF&rsquo;s securities, the higher the ETF&rsquo;s risk, all other factors such as maturity being equal.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Currency Risk.</i> Non-U.S. dollar-denominated securities are subject to fluctuations in the exchange rates between the U.S. dollar and foreign currencies which may negatively affect an investment. Adverse changes in exchange rates may erode or reverse any gains produced by foreign currency denominated investments, and may widen any losses.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Derivatives Risk.</i> When an ETF uses derivatives (securities whose value is based upon the value of another security or an index) to hedge positions in the portfolio, any loss generated by the derivative security should be substantially offset by gains on the hedged investment and vice versa. While hedging can reduce or eliminate losses, it can also reduce or eliminate gains. To the extent that a derivative is not used as a hedge (i.e., for speculation), an ETF is directly exposed to the potential gains and losses of that derivative. Gains and losses from non-hedging derivative positions may be substantially greater than the derivative&rsquo;s original cost. To the extent that an ETF uses derivatives, an ETF will (to the extent required by applicable law) either (1) segregate cash or liquid assets in the prescribed amount or (2) otherwise &ldquo;cover&rdquo; its future obligations under the transaction, such as by holding an offsetting investment.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Equity Securities Risks. </i>Equity investments, including common stocks, tend to be more volatile than bonds or money market instruments. To the extent an ETF is invested in equity securities, the value of the ETF&rsquo;s shares will go up and down due to movement in the collective returns of the individual securities held by the ETF. Common stocks are subordinate to preferred stocks in a company&rsquo;s capital structure, and if a company is liquidated, the claims of secured and unsecured creditors and owners of bonds and preferred stocks take precedence over the claims of those who own common stocks.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Emerging Market Risk. </i>Foreign investment risk may be particularly high to the extent an ETF invests in emerging market securities of issuers based in countries with developing economies. These securities may present market, credit, currency, liquidity, legal, political and other risks different from, or greater than, the risks of investing in developed foreign (non-U.S.) countries.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Foreign (Non-U.S.) Risk. </i>An ETF&rsquo;s investments in securities of non-U.S. issuers may experience more rapid and extreme changes in value than investments in securities of U.S. companies. The securities markets of many non-U.S. countries are relatively small, with a limited number of companies typically representing a small number of industries. Non-U.S. issuers usually are not subject to the same degree of regulation as U.S. issuers. Reporting, accounting and auditing standards of non-U.S. countries differ, in some cases significantly, from U.S. standards. Nationalization, expropriation or confiscatory taxation, currency blockage, or political changes or diplomatic developments could adversely affect an ETF&rsquo;s investments in a country other than the United States. To the extent an ETF invests in a particular country or geographic region, the ETF may have more significant risk due to market changes or other factors affecting that country or region, including political instability and unpredictable economic conditions. This risk is greater for those ETFs with higher asset allocations to non-U.S. equities.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Inflation Risk. </i>This is the risk that the value of assets or income from an ETF&rsquo;s investments will be less in the future as inflation decreases the value of money. As inflation increases, the value of the ETF&rsquo;s assets can decline as can the value of distributions.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Interest Rate Risk.</i> For debt securities, interest rate risk is the possibility that the price will fall because of changing interest rates. In general, debt security prices move inversely to changes in interest rates. If interest rates rise, bond prices generally fall; if interest rates fall, bond prices generally rise. In addition, for a given change in interest rates, longer-maturity bonds fluctuate more in price (gaining or losing more in value) than shorter-maturity bonds.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Investment Style Risk.</i> During certain market conditions, an ETF with a more specific investment style (such as value or growth) may perform less well than an ETF that allows greater flexibility in the investment of assets.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Liquidity Risk. </i>An ETF may invest in certain securities that may be difficult or impossible to sell at a certain time and at a price that the ETF finds to be favorable. An ETF may have to accept an unfavorable price, sell other securities instead or forego an investment opportunity, any of which could have a negative effect on portfolio management or investment performance.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Prepayment Risk. </i>Mortgage-backed securities are subject to the risk of unanticipated prepayments of principal with respect to mortgages in the security&rsquo;s underlying pool of assets. While principal prepayments are passed through to the holders of the securities, prepayments also reduce the future payments on such securities and may reduce their value. Mortgage-backed securities are subject to the risk that an unexpected rise in interest rates will extend the life of a mortgage-backed security beyond the expected prepayment time, typically reducing the security&rsquo;s value. Mortgage-backed securities are subject to the risk that an unexpected decline in interest rates will contract the life of a mortgage-backed security, thereby affecting its prepayment schedule, which may affect the value of the security.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Real Estate Investment Trust Risk. </i>REITs are subject to a variety of factors affecting the real estate market generally, such as economic conditions, overbuilding, mortgage rates and availability. In addition, REITs have additional risks because REITs are dependent on the capability of their managers, may have limited diversification, and could be significantly affected by changes in tax laws.</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0">&nbsp;</p> <p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><i>Reinvestment Risk. </i>During periods of falling interest rates, a debt security with a high stated interest rate may be prepaid (or &ldquo;called&rdquo;) prior to its expected maturity date. If, during periods of falling interest rates, a debt security with a high stated interest rate is called, the unanticipated proceeds would likely be invested at lower interest rates, and an ETF&rsquo;s income or yield may decline. Call provisions, which may lead to reinvestment risk, are most common for intermediate- and long-term municipal, corporate and mortgage-backed securities. To the extent securities subject to call were acquired at a premium, the potential for appreciation in the event of a decline in interest rates may be limited and may even result in losses.</p> falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk, Narrative524false0rr_RiskLoseMoneyrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00You may lose money by investing in the 2035 ETF Fund.falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringSummarize the principal risks of investing in the Fund, including the risks to which the Fund's portfolio as a whole is subject and the circumstances reasonably likely to affect adversely the Fund's net asset value, yield, and total return. Unless the Fund is a Money Market Fund, disclose that loss of money is a risk of investing in the Fund. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Subsection b falsefalseMay Lose Money525false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b><i>Performance</i></b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table, Heading526false0rr_PerformanceNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">The information below provides an illustration of how the 2035 ETF Fund&rsquo;s performance has varied over time. The bar chart and table provide some indication of the risks of investing in the 2035 ETF Fund by showing the changes in the 2035 ETF Fund&rsquo;s investment performance from year to year during the periods indicated and by showing how the average annual total returns for the one-year and since inception periods compare with broad-based securities market indexes. The total return figures do not reflect expenses that apply to the separate account or related annuity contracts. The inclusion of these charges would reduce the total return figures for all periods shown. The 2035 ETF Fund&rsquo;s past investment performance does not necessarily indicate how it will perform in the future.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalsePerformance, Narrative527false0rr_PerformanceInformationIllustratesVariabilityOfReturnsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The information below provides an illustration of how the 2035 ETF Fund's performance has varied over time. falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInclude the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance, Information Illustrates Variability of Returns528false0rr_PerformancePastDoesNotIndicateFuturerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00The 2035 ETF Fund's past investment performance does not necessarily indicate how it will perform in the future.falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInclude the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalsePerformance, Past Does Not Indicate Future529false0rr_BarChartHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center"><b>Calendar Year Returns</b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart, Heading530false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0">During the periods shown in the bar chart, the highest return for a quarter was 14.72% (quarter ended 09/30/09) and the lowest return for a quarter was -16.13% (quarter ended 12/31/08).</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart, Closing531false0rr_HighestQuarterlyReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00highest return for a quarterfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return, Label532false0rr_BarChartHighestQuarterlyReturnDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002009-09-30falsefalsetruefalsefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return Date533false0rr_BarChartHighestQuarterlyReturnrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14720.1472falsefalsefalsefalsefalseOtherxbrli: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.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseHighest Quarterly Return534false0rr_LowestQuarterlyReturnLabelrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00lowest return for a quarterfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return, Label535false0rr_BarChartLowestQuarterlyReturnDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002008-12-31falsefalsetruefalsefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return Date536false0rr_BarChartLowestQuarterlyReturnrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.1613-0.1613falsefalsefalsefalsefalseOtherxbrli: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.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseLowest Quarterly Return537false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p style="font: 11pt Times New Roman, Times, Serif; margin: 0"><b>Average Annual Total Returns</b></p> falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalsePerformance Table:538false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse31falsefalseUSDtruefalse{dei_LegalEntityAxis} : Wilshire 2035 ETF Fund {rr_ProspectusShareClassAxis} : Wilshire 2035 ETF Fund Shares 5/1/2011 - 5/1/2011 USD ($) $wvit_S000011652_C000032002http://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire 2035 ETF Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000011652Memberdei_LegalEntityAxisexplicitMemberfalsefalseWilshire 2035 ETF Fund Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_C000032002Memberrr_ProspectusShareClassAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170RatioStandardhttp://www.xbrl.org/2003/instancepure0USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseWilshire 2035 ETF Fund | Wilshire 2035 ETF Fund Shares539true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:540false0dei_TradingSymboldeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00&nbsp;falsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No authoritative reference available.falsefalseTrading Symbol541false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement Fees542false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalseDistribution and Service (12b-1) Fees543false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.0020.002falsefalsefalsefalsefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther Expenses544false0rr_AcquiredFundFeesAndExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00210.0021falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseAcquired Fund Fees and Expenses545false0rr_ExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00910.0091falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of "Annual Fund Operating Expenses" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining "Annual Fund Operating Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph d -Subsection instructions falsefalseGross Annual Expenses546false0rr_FeeWaiverOrReimbursementOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue-0.001-0.001[2]falsefalsefalsefalsefalseOtherrr:NonPositivePure4TypepureTotal Annual Fund Operating Expenses. If there were expense reimbursement or fee waiver arrangements that reduced any Fund operating expenses and will continue to reduce them for no less than one year from the effective date of the Fund's registration statement, a Fund may add two captions to the table one caption showing the amount of the expense reimbursement or fee waiver, and a second caption showing the Fund's net expenses after subtracting the fee reimbursement or expense waiver from the total fund operating expenses. The Fund should place these additional captions directly below the "Total Annual Fund Operating Expenses" caption of the table and should use appropriate descriptive captions, such as "Fee Waiver [and/or Expense Reimbursement]" and "Total Annual Fund Operating Expenses After Fee Waiver [and/or Expense Reimbursement]," respectively. If the Fund provides this disclosure, also disclose the period for which the expense reimbursement or fee waiver arrangement is expected to continue, and briefly describe who can terminate the arrangement and under what circumstances.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseLess Expense Reimbursement547false0rr_NetExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00810.0081falsefalsefalsefalsefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseTotal Annual Fund Operating Expenses548false0rr_ExpenseExampleYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue8383falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseExpense Example, 1 YEAR549false0rr_ExpenseExampleYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue280280falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, 3 YEARS550false0rr_ExpenseExampleYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue494494falsefalsefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, 5 YEARS551false0rr_ExpenseExampleYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue11101110falsetruefalsefalsefalseMonetaryrr:NonNegativeMonetaryTypemonetaryThe Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 2 -Subsection example falsefalseExpense Example, 10 YEARS552false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.04610.0461falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse2007553false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.33-0.33falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2008554false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.21030.2103falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse2009555false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.12520.1252falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse2010556false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.12520.1252falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse1 Year557false0rr_AverageAnnualReturnSinceInceptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00190.0019falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseSince Inception558false0rr_AverageAnnualReturnInceptionDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse002006-05-01falsefalsetruefalsefalseOtherxbrli:dateItemTypedateReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 4 -Subsection b falsefalseInception Date559false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse32falsefalsetruefalse{dei_LegalEntityAxis} : Wilshire 2035 ETF Fund {rr_PerformanceMeasureAxis} : Wilshire 5000 Index (reflects no deduction for fees, expenses or taxes) 5/1/2011 - 5/1/2011 wvit_S000011652_w5k2035http://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire 2035 ETF Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000011652Memberdei_LegalEntityAxisexplicitMemberfalsefalseWilshire 5000 Index (reflects no deduction for fees, expenses or taxes)rr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_w5k2035Memberrr_PerformanceMeasureAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseWilshire 2035 ETF Fund | Wilshire 5000 Index (reflects no deduction for fees, expenses or taxes)560true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:561false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.17170.1717falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse1 Year562false0rr_AverageAnnualReturnSinceInceptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.0170.017falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseSince Inception563false0rr_AverageAnnualReturnInceptionDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse002006-05-01falsefalsetruefalsefalseOtherxbrli:dateItemTypedateReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 4 -Subsection b falsefalseInception Date564false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturndetaildata1falsefalsefalse00falsefalsefalsefalsefalse33falsefalsetruefalse{dei_LegalEntityAxis} : Wilshire 2035 ETF Fund {rr_PerformanceMeasureAxis} : S&P Target Date 2035 Index (reflects no deduction for fees, expenses or taxes) 5/1/2011 - 5/1/2011 wvit_S000011652_snp2035http://www.sec.gov/CIK0001026708duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseWilshire 2035 ETF Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_S000011652Memberdei_LegalEntityAxisexplicitMemberfalsefalseS&P Target Date 2035 Index (reflects no deduction for fees, expenses or taxes)rr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldiwvit_snp2035Memberrr_PerformanceMeasureAxisexplicitMemberRatioStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseWilshire 2035 ETF Fund | S&P Target Date 2035 Index (reflects no deduction for fees, expenses or taxes)565true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:566false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.15020.1502falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalse1 Year567false0rr_AverageAnnualReturnSinceInceptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.02480.0248falsefalsefalsefalsefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseSince Inception568false0rr_AverageAnnualReturnInceptionDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse002006-05-01falsefalsetruefalsefalseOtherxbrli:dateItemTypedateReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 4 -Subsection b falsefalseInception Date1Wilshire has contractually agreed to waive Management Fees and/or reimburse expenses for the Fund through April 30, 2012, so that the Total Annual Operating Expenses for the Fund, excluding the fees and expenses of the ETFs, will not exceed 0.60% (the "Expense Limitation"). Wilshire may recoup the amount of any management fee waived within three years after the year in which Wilshire incurred the expense if the recoupment does not exceed the existing expense limitation.2Wilshire has contractually agreed to waive Management Fees and/or reimburse expenses for the Fund through April 30, 2012, so that the Total Annual Operating Expenses for the Fund, excluding the fees and expenses of the ETFs, will not exceed 0.60% (the "Expense Limitation" ). Total Annual Operating Expenses are the sum of the Fund's direct annual operating expenses and of the Fund's indirect ETF fees and expenses. Wilshire may recoup the amount of any management fee waived within three years after the year in which Wilshire incurred the expense if the recoupment does not exceed the existing expense limitation.1567Risk/Return Detail Data (USD $)NoRoundingUnKnownUnKnownUnKnowntruetrue