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Risk/Return:rr_RiskReturnAbstract 
ProspectusDaterr_ProspectusDateNov. 01, 2011
WILMINGTON SMALL-CAP STRATEGY FUND (Prospectus Summary) | WILMINGTON SMALL-CAP STRATEGY FUND
 
Risk/Return:rr_RiskReturnAbstract 
Risk/Return, Headingrr_RiskReturnHeadingWILMINGTON SMALL-CAP STRATEGY FUND SUMMARY
Investment Objective, Headingrr_ObjectiveHeadingINVESTMENT OBJECTIVE
investment Objective, Primaryrr_ObjectivePrimaryTextBlock
The Fund's investment objective is to achieve long-term capital appreciation.
Expense, Headingrr_ExpenseHeadingFEES AND EXPENSES OF THE FUND
Expense, Narrativerr_ExpenseNarrativeTextBlock
The following tables describe the fees and expenses that you may pay if
you buy and hold shares 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
$100,000 in A Shares of the Wilmington Funds. More information about these and
other discounts is available from your financial professional and in the
section "Purchase of Shares" on page 16 of the Fund's Prospectus.
Shareholder Fees, Captionrr_ShareholderFeesCaptionSHAREHOLDER FEES (fees paid directly from your investment):
Operating Expenses, Captionrr_OperatingExpensesCaptionANNUAL FUND OPERATING EXPENSES (expenses that you pay each year as a % of the value of your investment):
Portfolio Turnover, Headingrr_PortfolioTurnoverHeadingPORTFOLIO TURNOVER
Portfolio Turnoverrr_PortfolioTurnoverTextBlock
The Fund pays transaction costs, such as commissions, when it buys or
sells securities (or "turns over" its portfolio). A higher portfolio turnover
rate may indicate higher transaction costs and may result in higher taxes if
Fund shares are held in a taxable account. These costs, which are not reflected
in the Annual Fund Operating Expenses or in the example, affect the Fund's
performance. During the most recent fiscal year, the Fund's portfolio turnover
rate was 48% of the average value of its portfolio.
Portfolio Turnover, Raterr_PortfolioTurnoverRate48.00%
Expense Breakpoint, Discountsrr_ExpenseBreakpointDiscountsYou may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $100,000 in A Shares of the Wilmington Funds.
Expense Breakpoint, Minimum Investment Required Amountrr_ExpenseBreakpointMinimumInvestmentRequiredAmount$ 100,000
Expense Example, Headingrr_ExpenseExampleHeadingEXAMPLE
Expense Example, Narrativerr_ExpenseExampleNarrativeTextBlock
This example is intended to help you compare the cost of investing in the
Fund with the cost of investing in other mutual funds. The example assumes that
you invest $10,000 in the Fund for the time periods indicated and then redeem
all of your shares at the end of those periods. The example also assumes that
your investment has a 5% return each year and that the Fund's operating
expenses remain the same (reflecting any contractual fee waivers). Although
your actual costs may be higher or lower, based on these assumptions, your
costs would be:
Investment Strategy, Headingrr_StrategyHeadingINVESTMENTS, RISKS AND PERFORMANCE
Investment Strategy, Narrativerr_StrategyNarrativeTextBlock
PRINCIPAL INVESTMENT STRATEGIES

The Fund invests at least 80% of its assets in a diversified portfolio of
U.S. equity (or equity-related) securities of small-cap companies. Small-cap
companies are companies that have a market capitalization at the time of
purchase less than the largest company in the Russell 2000 Index ($2.97 billion
as of May 31, 2011) or less than the largest company expected to be included in
the Russell 2000 Index after its next scheduled reconstitution. The Fund
expects to invest substantially all of its assets in common stocks of U.S.
companies.

The Fund's investment adviser determines the tactical allocation of the
Fund's assets and uses returns-based and holdings-based style analysis tools to
assess the tactical weightings. The Fund's investment adviser currently
allocates the Fund's assets between growth and value stocks. Once the
investment adviser determines the tactical allocations, the sub-adviser builds
a portfolio in accordance with the investment adviser's allocation
instructions. The sub-adviser uses quantitative models to construct a portfolio
for the Fund.

The sub-adviser invests in a representative sample of securities which are
included in the Fund's benchmark index (Russell 2000 Index) or another index of
small-capitalization companies, weighted to reflect the investment adviser's
growth and value tactical allocations. The return for each of the growth and
value portions of the portfolio are intended to correlate closely with the
return for the corresponding growth and value components of the applicable
benchmark. The sub-adviser will use its proprietary quantitative models to
rebalance the portfolio and to make buy and sell decisions on individual
securities. There is no assurance that the sub-adviser's investment performance
will equal or approximate that of the benchmark index.
Risk, Headingrr_RiskHeadingPRINCIPAL RISKS OF INVESTING IN THE FUND
Risk, Narrativerr_RiskNarrativeTextBlock
Risk is inherent in all investing. The value of your investment in the
Fund, as well as the amount of return you receive on your investment may
fluctuate significantly from day-to-day and over time. You may lose part or all
of your investment in the Fund or your investment may not perform as well as
other similar investments. An investment in the Fund is not a deposit of
Wilmington Trust Company or any of its affiliates and is not insured or
guaranteed by Federal Deposit Insurance Corporation or any other governmental
agency. There is no assurance that the Fund will achieve its investment
objective. The Fund is subject to the principal risks described below.

         o        ALLOCATION RISK: The risk that the investment adviser will
                  make less than optimal or poor asset allocation decisions.

         o        GROWTH INVESTING RISK: The prices of growth stocks may be
                  more sensitive to changes in current or expected earnings than
                  the prices of other stocks.

         o        LIQUIDITY RISK: The risk that certain securities may be
                  difficult or impossible to sell at the time and the price that
                  the seller would like.

         o        MARKET RISK: The risk that the market value of a security may
                  fluctuate, sometimes rapidly and unpredictably. The prices of
                  equity securities change in response to many factors including
                  the historical and prospective earnings of the issuer, the
                  value of its assets, general economic conditions, interest
                  rates, investor perceptions and market liquidity.

         o        OPPORTUNITY RISK: The risk of missing out on an investment
                  opportunity because the assets necessary to take advantage of
                  it are tied up in less advantageous investments.

         o        SMALL-CAP RISK: Small-cap companies may be more vulnerable
                  than large-cap companies to adverse business or economic
                  developments. Small-cap companies may be less liquid and more
                  volatile than securities of large-cap companies and therefore
                  may involve greater risk.

         o        VALUATION RISK: The risk that the Fund has valued certain of
                  its securities at a higher price than it can sell them.

         o        VALUE INVESTING RISK: The risk that investments in companies
                  whose securities are believed to be undervalued, relative to
                  their underlying profitability, do not appreciate in value as
                  anticipated.
Risk, Lose Moneyrr_RiskLoseMoneyYou may lose part or all of your investment in the Fund or your investment may not perform as well as other similar investments.
Risk, Not Insured Depository Institutionrr_RiskNotInsuredDepositoryInstitutionAn investment in the Fund is not a deposit of Wilmington Trust Company or any of its affiliates and is not insured or guaranteed by Federal Deposit Insurance Corporation or any other governmental agency.
Bar Chart and Performance Table, Headingrr_BarChartAndPerformanceTableHeadingRISK/RETURN BAR CHART AND PERFORMANCE TABLE
Performance, Narrativerr_PerformanceNarrativeTextBlock
The bar chart and table shown below provide some indication of the risks of
investing in the Fund by showing:

         o        changes in the Fund's performance from year-to-year; and

         o        how the Fund's average annual returns for one year, five year
                  and since inception periods compared to those of a broad
                  measure of market performance.

The Fund's past performance (before and after taxes) does not necessarily
indicate how the Fund will perform in the future. Updated performance
information is available on the Fund's website at wilmingtonfunds.com and/or by
calling the Fund toll-free at (800) 336-9970.
Performance, Information Illustrates Variability of Returnsrr_PerformanceInformationIllustratesVariabilityOfReturnsThe bar chart and table shown below provide some indication of the risks of investing in the Fund by showing:
Performance, Availability Phone Numberrr_PerformanceAvailabilityPhone(800) 336-9970
Performance, Availability Website Addressrr_PerformanceAvailabilityWebSiteAddresswilmingtonfunds.com
Performance, Past Does Not Indicate Futurerr_PerformancePastDoesNotIndicateFutureThe Fund's past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.
Bar Chart, Headingrr_BarChartHeadingANNUAL TOTAL RETURNS FOR THE CALENDAR YEARS SINCE INCEPTION
Bar Chart, Narrativerr_BarChartNarrativeTextBlock
The annual returns in the bar chart are for the Fund's Institutional Shares and do not
reflect sales loads. If sales loads were reflected, returns ould be lower than those shown.
Bar Chart, Does Not Reflect Sales Loadsrr_BarChartDoesNotReflectSalesLoadsThe annual returns in the bar chart are for the Fund's Institutional Shares and do not reflect sales loads. If sales loads were reflected, returns would be lower than those shown.
Bar Chart, Closingrr_BarChartClosingTextBlock
Calendar Year-to-Date Total Return as of September 30, 2011: -17.00%

During the periods shown in the bar chart, the Fund's best quarter was up
20.15% (quarter ended June 30, 2009) and the Fund's worst quarter was down
-26.19% (quarter ended December 31, 2008).
Index No Deduction for Fees, Expenses, Taxesrr_IndexNoDeductionForFeesExpensesTaxesreflects no deduction for fees, expenses or taxes
Performance Table, Uses Highest Federal Raterr_PerformanceTableUsesHighestFederalRateAfter-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table, Not Relevant to Tax Deferredrr_PerformanceTableNotRelevantToTaxDeferredActual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.
Performance Table, Narrativerr_PerformanceTableNarrativeTextBlock
The A Shares currently do not have any shareholders so no performance information is shown.
If active the returns would be less than the Institutional Shares due to applicable fees and
sales charges.
Performance Table, Footnotes, Reason Performance Information for Class Different from Immediately Preceding Period [Text]rr_PerformanceTableFootnotesReasonPerformanceInformationForClassDifferentFromImmediatelyPrecedingPeriod The A Shares currently do not have any shareholders so no performance information is shown. If active the returns would be less than the Institutional Shares due to applicable fees and sales charges.
Average Annual Returns, Captionrr_AverageAnnualReturnCaptionAVERAGE ANNUAL TOTAL RETURNS (for the periods ended December 31, 2010)
WILMINGTON SMALL-CAP STRATEGY FUND (Prospectus Summary) | WILMINGTON SMALL-CAP STRATEGY FUND | INSTITUTIONAL SHARES
 
Risk/Return:rr_RiskReturnAbstract 
Fee Waiver or Reimbursement over Assets, Date of Terminationrr_FeeWaiverOrReimbursementOverAssetsDateOfTermination2012-10-31
Year to Date Return, Labelrr_YearToDateReturnLabelCalendar Year-to-Date Total Return
Bar Chart, Year to Date Return, Daterr_BarChartYearToDateReturnDateSep. 30, 2011
Bar Chart, Year to Date Returnrr_BarChartYearToDateReturn(17.00%)
Highest Quarterly Return, Labelrr_HighestQuarterlyReturnLabelbest quarter
Highest Quarterly Return, Daterr_BarChartHighestQuarterlyReturnDateJun. 30, 2009
Highest Quarterly Returnrr_BarChartHighestQuarterlyReturn20.15%
Lowest Quarterly Return, Labelrr_LowestQuarterlyReturnLabelworst quarter
Lowest Quarterly Return, Daterr_BarChartLowestQuarterlyReturnDateDec. 31, 2008
Lowest Quarterly Returnrr_BarChartLowestQuarterlyReturn(26.19%)
WILMINGTON SMALL-CAP STRATEGY FUND (Prospectus Summary) | WILMINGTON SMALL-CAP STRATEGY FUND | A SHARES
 
Risk/Return:rr_RiskReturnAbstract 
Fee Waiver or Reimbursement over Assets, Date of Terminationrr_FeeWaiverOrReimbursementOverAssetsDateOfTermination2012-10-31
WILMINGTON SMALL-CAP STRATEGY FUND | Russell 2000 Index
 
Risk/Return:rr_RiskReturnAbstract 
Average Annual Returns, Labelrr_AverageAnnualReturnLabelRussell 2000 Index (reflects no deduction for fees, expenses or taxes)
Average Annual Returns, 1 Yearrr_AverageAnnualReturnYear0126.85%
Average Annual Returns, 5 Yearsrr_AverageAnnualReturnYear054.47%
Average Annual Returns, Since Inceptionrr_AverageAnnualReturnSinceInception9.11%
Average Annual Returns, Inception Daterr_AverageAnnualReturnInceptionDateJul. 01, 2003
WILMINGTON SMALL-CAP STRATEGY FUND | S&P Small Cap 600 Index
 
Risk/Return:rr_RiskReturnAbstract 
Average Annual Returns, Labelrr_AverageAnnualReturnLabelS&P Small Cap 600 Index (reflects no deduction for fees, expenses or taxes)
Average Annual Returns, 1 Yearrr_AverageAnnualReturnYear0126.31%
Average Annual Returns, 5 Yearsrr_AverageAnnualReturnYear054.64%
Average Annual Returns, Since Inceptionrr_AverageAnnualReturnSinceInception9.95%
Average Annual Returns, Inception Daterr_AverageAnnualReturnInceptionDateJul. 01, 2003
WILMINGTON SMALL-CAP STRATEGY FUND | INSTITUTIONAL SHARES
 
Risk/Return:rr_RiskReturnAbstract 
Maximum Sales Charge (Load) Imposed on Purchases (as a % of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice none
Redemption Fee (as a percentage of amount redeemed within 60 days of purchase)rr_RedemptionFeeOverRedemption(1.00%)
Management Feesrr_ManagementFeesOverAssets0.55%
Distribution (12b-1) and/or Service Feesrr_DistributionAndService12b1FeesOverAssets none
Other Expensesrr_OtherExpensesOverAssets0.41%
TOTAL ANNUAL FUND OPERATING EXPENSESrr_ExpensesOverAssets0.96%
Fee Waiver and/or Expense Reimbursementrr_FeeWaiverOrReimbursementOverAssets(0.71%)[1]
TOTAL ANNUAL FUND OPERATING EXPENSES (After Fee Waiver and/or Expense Reimbursement)rr_NetExpensesOverAssets0.25%
Expense Example, With Redemption, 1 Yearrr_ExpenseExampleYear0126
Expense Example, With Redemption, 3 Yearsrr_ExpenseExampleYear03235
Expense Example, With Redemption, 5 Yearsrr_ExpenseExampleYear05462
Expense Example, With Redemption, 10 Yearsrr_ExpenseExampleYear101,113
Annual Return 2004rr_AnnualReturn200418.22%
Annual Return 2005rr_AnnualReturn20055.42%
Annual Return 2006rr_AnnualReturn200612.05%
Annual Return 2007rr_AnnualReturn2007(1.65%)
Annual Return 2008rr_AnnualReturn2008(36.00%)
Annual Return 2009rr_AnnualReturn200924.91%
Annual Return 2010rr_AnnualReturn201026.94%
Average Annual Returns, Labelrr_AverageAnnualReturnLabelInstitutional Shares Return Before Taxes
Average Annual Returns, 1 Yearrr_AverageAnnualReturnYear0126.94%
Average Annual Returns, 5 Yearsrr_AverageAnnualReturnYear052.26%
Average Annual Returns, Since Inceptionrr_AverageAnnualReturnSinceInception7.07%
Average Annual Returns, Inception Daterr_AverageAnnualReturnInceptionDateJul. 01, 2003
WILMINGTON SMALL-CAP STRATEGY FUND | INSTITUTIONAL SHARES | After Taxes on Distributions
 
Risk/Return:rr_RiskReturnAbstract 
Average Annual Returns, Labelrr_AverageAnnualReturnLabelInstitutional Shares Return After Taxes on Distributions[2]
Average Annual Returns, 1 Yearrr_AverageAnnualReturnYear0126.56%
Average Annual Returns, 5 Yearsrr_AverageAnnualReturnYear050.86%
Average Annual Returns, Since Inceptionrr_AverageAnnualReturnSinceInception5.82%
Average Annual Returns, Inception Daterr_AverageAnnualReturnInceptionDateJul. 01, 2003
WILMINGTON SMALL-CAP STRATEGY FUND | INSTITUTIONAL SHARES | After Taxes on Distributions and Sales
 
Risk/Return:rr_RiskReturnAbstract 
Average Annual Returns, Labelrr_AverageAnnualReturnLabelInstitutional Shares Return After Taxes on Distributions and Sale of Fund Shares[2]
Average Annual Returns, 1 Yearrr_AverageAnnualReturnYear0117.63%
Average Annual Returns, 5 Yearsrr_AverageAnnualReturnYear051.65%
Average Annual Returns, Since Inceptionrr_AverageAnnualReturnSinceInception5.90%
Average Annual Returns, Inception Daterr_AverageAnnualReturnInceptionDateJul. 01, 2003
WILMINGTON SMALL-CAP STRATEGY FUND | A SHARES
 
Risk/Return:rr_RiskReturnAbstract 
Maximum Sales Charge (Load) Imposed on Purchases (as a % of offering price)rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice3.50%
Redemption Fee (as a percentage of amount redeemed within 60 days of purchase)rr_RedemptionFeeOverRedemption(1.00%)
Management Feesrr_ManagementFeesOverAssets0.55%
Distribution (12b-1) and/or Service Feesrr_DistributionAndService12b1FeesOverAssets0.25%
Other Expensesrr_OtherExpensesOverAssets0.41%
TOTAL ANNUAL FUND OPERATING EXPENSESrr_ExpensesOverAssets1.21%
Fee Waiver and/or Expense Reimbursementrr_FeeWaiverOrReimbursementOverAssets(0.71%)[1]
TOTAL ANNUAL FUND OPERATING EXPENSES (After Fee Waiver and/or Expense Reimbursement)rr_NetExpensesOverAssets0.50%
Expense Example, With Redemption, 1 Yearrr_ExpenseExampleYear01399
Expense Example, With Redemption, 3 Yearsrr_ExpenseExampleYear03653
Expense Example, With Redemption, 5 Yearsrr_ExpenseExampleYear05926
Expense Example, With Redemption, 10 Yearsrr_ExpenseExampleYear10$ 1,704
[1]RSMC has contractually agreed to waive a portion of its advisory fee or reimburse for other expenses to the extent that "Total Annual Fund Operating Expenses" for the Fund, excluding extraordinary expenses, brokerage commissions, interest and "Acquired Fund fees and expenses," exceed 0.25% through October 31, 2012 (the "Expense Limitation Agreement"). The Expense Limitation Agreement will remain in place through October 31, 2012, unless the Board of Trustees approves its earlier termination.
[2]After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on your tax situation and may differ from those shown and are not relevant if you hold your shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.