v3.26.1
Shareholder Report, Line Graph (Details) - USD ($)
 12 Months Ended 24 Months Ended 36 Months Ended 48 Months Ended 60 Months Ended 72 Months Ended 84 Months Ended 96 Months Ended 108 Months Ended 120 Months Ended
Apr. 30, 2016
Apr. 30, 2026
Apr. 30, 2017
Apr. 30, 2018
Apr. 30, 2019
Apr. 30, 2020
Apr. 30, 2021
Apr. 30, 2022
Apr. 30, 2023
Apr. 30, 2024
Apr. 30, 2025
Apr. 30, 2026
C000015044 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Wilmington Enhanced Dividend Income Strategy Fund — Class I                    
Accumulated Value $ 100,000   $ 109,644.41 $ 117,585.3 $ 123,252.66 $ 116,061.89 $ 145,184.1 $ 151,351.76 $ 154,430.34 $ 170,903.61 $ 184,909.11 $ 241,646.6
C000015042 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Wilmington Enhanced Dividend Income Strategy Fund — Class A (including 5.5% maximum sales load)                    
Accumulated Value 9,445.96   10,331.97 11,054.37 11,569.75 10,855.97 13,554.46 14,095.48 14,333.53 15,841.35 17,089.26 22,279.64
C000015051 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Wilmington Broad Market Bond Fund — Class A (including 4.5% maximum sales load)                    
Accumulated Value 9,548.51   9,569.23 9,492.05 9,914.44 10,841.67 10,897.2 9,985.92 9,915.34 9,770.25 10,493.38 10,841.83
C000015053 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Wilmington Broad Market Bond Fund — Class I                    
Accumulated Value 100,000   100,535.19 100,012.97 104,856.14 115,066.2 116,025.95 106,714.59 106,266.79 105,112.17 113,161.74 117,234.8
C000015059 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Wilmington International Fund — Class I                    
Accumulated Value 100,000   112,686.48 132,167 126,995.7 111,401.36 161,441.43 135,443.96 139,818.95 151,138.61 172,304.04 229,190.36
C000015057 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Wilmington International Fund — Class A (including 5.5% maximum sales load)                    
Accumulated Value 9,452.6   10,636.49 12,463.52 11,956.19 10,479.62 15,160.93 12,688.3 13,069.88 14,090.13 16,019.42 21,248.78
C000015273 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Wilmington New York Municipal Bond Fund — Class A (including 4.5% maximum sales load)                    
Accumulated Value 9,553.42   9,476.39 9,405.12 9,890.61 9,878.55 10,508.52 9,695.38 9,965.5 10,055.02 10,198.77 10,707.23
C000015275 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Wilmington New York Municipal Bond Fund — Class I                    
Accumulated Value 100,000   99,446.17 98,948.77 104,214.92 104,348.71 111,386.4 103,035.67 106,170.35 107,394.15 109,202 114,932.78
C000107165 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Wilmington Municipal Bond Fund — Class I                    
Accumulated Value 100,000   99,606.96 99,574.32 105,327.51 105,221.69 112,918.82 104,070.81 107,376.57 109,092.08 111,498.89 117,758.55
C000107164 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Wilmington Municipal Bond Fund — Class A (including 4.5% maximum sales load)                    
Accumulated Value 9,548.67   9,486.95 9,459.78 9,981.51 9,946.11 10,647.27 9,787.43 10,072.82 10,216.3 10,413.89 10,962.05
C000107168 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Wilmington Real Asset Fund — Class A (including 5.5% maximum sales load)                    
Accumulated Value 9,452.15   9,618.58 10,302.36 10,513.34 9,320.54 11,990.49 13,950.14 11,935.07 12,141.35 13,162.2 16,905.76
C000107169 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Wilmington Real Asset Fund — Class I                    
Accumulated Value 100,000   102,113.71 109,580.34 112,087.99 99,609.66 128,493.14 149,904.98 128,606.95 131,107.78 142,514.9 183,501.02
C000107171 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Wilmington Global Alpha Equities Fund — Class I                    
Accumulated Value 100,000   107,930.88 114,007.97 118,772.69 116,031.04 130,591.58 128,359.78 133,172.17 142,129.24 154,705.99 167,899.71
C000107170 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Wilmington Global Alpha Equities Fund — Class A (including 5.5% maximum sales load)                    
Accumulated Value 9,451.4   10,168.44 10,718.63 11,133.72 10,847.24 12,178.16 11,938.85 12,358.13 13,157.89 14,288.07 15,461.29
C000107172 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Wilmington Large-Cap Strategy Fund — Class I                    
Accumulated Value 100,000   118,325 134,551 151,951 152,087 226,786 221,698 225,504 276,357 308,501 401,421
Russell 1000 C000015044 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value 100,000   118,027.7 133,571.36 151,376.15 151,505.73 226,469.4 221,720.11 225,750.32 277,266.32 310,378.85 404,792.15
Russell 1000 Index [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Russell 1000® Index                    
Accumulated Value 10,000   11,802.77 13,357.14 15,137.62 15,150.57 22,646.94 22,172.01 22,575.03 27,726.63 31,037.88 40,479.22
Bloomberg U S Aggregate Bond Index [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Bloomberg U.S. Aggregate Bond Index                    
Accumulated Value 10,000   10,082.86 10,050.67551 10,582.41655 11,729.75157 11,698.4214 10,702.62838 10,656.88534 10,500.4103 11,342.5852 11,802.73608
Bloomberg U S Aggregate Bond C000015053 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value 100,000   100,828.6 100,506.7551 105,824.1655 117,297.5157 116,984.214 107,026.2838 106,568.8534 105,004.103 113,425.852 118,027.3608
MSCI ACWI ex US Net C000015059 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value 100,000   112,593.2 130,504.1885 126,288.2507 111,749.4421 159,775.6646 143,300.8763 147,671.553 161,441.7776 180,694.8397 238,873.88
MSCI ACWI ex US Net Index [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   MSCI ACWI ex-US Net Index                    
Accumulated Value 10,000   11,259.32 13,050.42 12,628.83 11,174.94 15,977.57 14,330.09 14,767.16 16,144.18 18,069.48 23,887.39
Standard And Poor s Municipal Bond Index [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Standard & Poor's Municipal Bond Index                    
Accumulated Value 10,000   9,999.05 10,146.90595 10,742.53948 10,975.66333 11,790.14535 10,921.27059 11,240.01879 11,462.53745 11,650.79816 12,348.84408
Standard And Poor s Intermediate Municipal Bond Index [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Standard & Poor’s Intermediate Municipal Bond Index                    
Accumulated Value 10,000   10,027.74 10,098.59601 10,713.49952 10,985.59027 11,716.28494 10,893.80174 11,284.58147 11,476.44193 11,731.55175 12,446.00325
Standard And Poor s Intermediate Term New York AMT Free Municipal Bond Index [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Standard & Poor’s Intermediate Term New York AMT-Free Municipal Bond Index                    
Accumulated Value 10,000   10,005.13 10,039.33754 10,582.65645 10,707.83869 11,353.27508 10,663.82475 11,053.47024 11,289.83765 11,503.26074 12,188.67885
Standard And Poor s Intermediate Term New York AMT Free Municipal Bond C000015275 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value 100,000   100,051.3 100,393.3754 105,826.5645 107,078.3869 113,532.7508 106,638.2475 110,534.7024 112,898.3765 115,032.6074 121,886.7885
Standard And Poor s Investment Grade Intermediate Municipal Bond C000107165 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value 100,000   100,094.4 100,684.7568 106,767.425 109,604.2355 116,610.9054 108,262.9639 112,238.38 113,958.4331 116,403.2974 123,530.4268
Standard And Poor s Intermediate Municipal Bond C000107165 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value 100,000   100,277.4 100,985.9601 107,134.9952 109,855.9027 117,162.8494 108,938.0174 112,845.8147 114,764.4193 117,315.5175 124,460.0325
Standard And Poor s Municipal Bond C000107165 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value 100,000   99,990.5 101,469.0595 107,425.3948 109,756.6333 117,901.4535 109,212.7059 112,400.1879 114,625.3745 116,507.9816 123,488.4408
Standard And Poor s Investment Grade Intermediate Municipal Bond Index [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Standard & Poor’s Investment Grade Intermediate Municipal Bond Index                    
Accumulated Value 10,000   10,009.44 10,068.47568 10,676.7425 10,960.42355 11,661.09054 10,826.29639 11,223.838 11,395.84331 11,640.32974 12,353.04268
MSCI ACWI Index Net [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   MSCI ACWI Index (Net)                    
Accumulated Value 10,000   11,513.51 13,144.2375 13,809.62509 13,125.01293 19,129.23384 18,088.22094 18,461.07344 21,684.81992 24,252.15081 31,769.82306
Real Asset Blended Index [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Real Asset Blended Index                    
Accumulated Value 10,000   10,527.01 10,845.44 11,225.93 9,944.42 13,077.69 15,223.39 13,081.46 13,403.23 14,502.88 19,070.6
Bloomberg Commodity Index [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Bloomberg Commodity Index                    
Accumulated Value 10,000   9,867.77 10,658.74 9,802.91 7,530.58 11,184.21 16,052.7 13,387.95 13,774.53 14,335.95 20,760.88
MSCI ACWI C000107168 Index Net [Member]                        
Account Value [Line Items]                        
Accumulated Value       13,144.24 13,809.63 13,125.01 19,129.23 18,088.22 18,461.07 21,684.82 24,252.15 31,769.82
Bloomberg U S Aggregate Bond C000107168 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value       10,050.68 10,582.42 11,729.75 11,698.42 10,702.63 10,656.89 10,500.41 11,342.59 11,802.74
MSCI ACWI C000107169 Index Net [Member]                        
Account Value [Line Items]                        
Accumulated Value       131,442.38 138,096.25 131,250.13 191,292.34 180,882.21 184,610.73 216,848.2 242,521.51 317,698.23
Bloomberg U S Aggregate Bond C000107169 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value       100,506.76 105,824.17 117,297.52 116,984.21 107,026.28 106,568.85 105,004.1 113,425.85 118,027.36
Real Asset Blended C000107169 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value 100,000   105,270.13 108,454.4 112,259.32 99,444.15 130,776.94 152,233.94 130,814.63 134,032.27 145,028.82 190,706.04
Bloomberg Commodity C000107169 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value 100,000   98,677.7 106,587.41 98,029.08 75,305.84 111,842.13 160,527 133,879.52 137,745.29 143,359.51 207,608.79
HFRX Equity Hedge C000107171 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value 100,000   106,638.4 114,081.6537 109,562.9935 102,984.5224 125,750.9843 130,668.4136 130,960.8626 141,598.8135 149,173.2597 170,158.7361
MSCI ACWI C000107171 Index Net [Member]                        
Account Value [Line Items]                        
Accumulated Value 100,000   115,135.1 131,442.375 138,096.2509 131,250.1293 191,292.3384 180,882.2094 184,610.7344 216,848.1992 242,521.5081 317,698.3252
HFRX Equity Hedge Index [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   HFRX Equity Hedge Index                    
Accumulated Value 10,000   10,663.84 11,408.16537 10,956.29935 10,298.45224 12,575.09843 13,066.84136 13,096.08626 14,159.88135 14,917.32597 17,015.87361
Russell 1000 Value C000015044 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value 100,000   116,550.5 125,295.28 136,650.92 121,601.55 177,446.42 179,785.93 181,966.41 206,386.31 224,032.75 289,571.84
Russell 1000 Value Index [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Russell 1000® Value Index                    
Accumulated Value $ 10,000   $ 11,655.05 $ 12,529.53 $ 13,665.09 $ 12,160.16 $ 17,744.64 $ 17,978.59 $ 18,196.64 $ 20,638.63 $ 22,403.27 $ 28,957.18