v3.26.1
Shareholder Report, Line Graph (Details) - USD ($)
 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended 15 Months Ended 18 Months Ended 21 Months Ended 24 Months Ended 27 Months Ended 30 Months Ended 33 Months Ended 36 Months Ended 39 Months Ended 42 Months Ended 45 Months Ended 48 Months Ended 51 Months Ended 54 Months Ended 57 Months Ended 60 Months Ended 63 Months Ended 66 Months Ended 69 Months Ended 72 Months Ended 75 Months Ended 78 Months Ended 81 Months Ended 84 Months Ended 87 Months Ended 90 Months Ended 93 Months Ended 96 Months Ended 99 Months Ended 102 Months Ended 105 Months Ended 108 Months Ended 111 Months Ended 114 Months Ended 117 Months Ended 120 Months Ended
Jun. 30, 2016
Sep. 30, 2016
Dec. 31, 2016
Mar. 31, 2017
Jun. 30, 2026
Jun. 30, 2017
Sep. 30, 2017
Dec. 31, 2017
Mar. 31, 2018
Jun. 30, 2018
Sep. 30, 2018
Dec. 31, 2018
Mar. 31, 2019
Jun. 30, 2019
Sep. 30, 2019
Dec. 31, 2019
Mar. 31, 2020
Jun. 30, 2020
Sep. 30, 2020
Dec. 31, 2020
Mar. 31, 2021
Jun. 30, 2021
Sep. 30, 2021
Dec. 31, 2021
Mar. 31, 2022
Jun. 30, 2022
Sep. 30, 2022
Dec. 31, 2022
Mar. 31, 2023
Jun. 30, 2023
Sep. 30, 2023
Dec. 31, 2023
Mar. 31, 2024
Jun. 30, 2024
Sep. 30, 2024
Dec. 31, 2024
Mar. 31, 2025
Jun. 30, 2025
Sep. 30, 2025
Dec. 31, 2025
Mar. 31, 2026
Jun. 30, 2026
C000012489                                                                                    
Account Value [Line Items]                                                                                    
Line Graph and Table Measure Name         DF Dent Premier Growth Fund                                                                          
Accumulated Value $ 10,000 $ 10,553 $ 10,331 $ 11,122   $ 12,062 $ 12,828 $ 13,620 $ 14,409 $ 15,075 $ 16,309 $ 13,873 $ 16,627 $ 18,261 $ 18,486 $ 19,825 $ 16,804 $ 21,333 $ 22,736 $ 25,441 $ 25,345 $ 27,938 $ 28,117 $ 29,797 $ 26,584 $ 21,499 $ 20,159 $ 21,439 $ 23,082 $ 24,785 $ 23,468 $ 26,673 $ 29,174 $ 28,718 $ 31,074 $ 30,584 $ 29,612 $ 32,181 $ 33,070 $ 32,679 $ 28,753 $ 31,963
C000102025                                                                                    
Account Value [Line Items]                                                                                    
Line Graph and Table Measure Name         Investor                                                                          
Accumulated Value 10,000 10,423 10,139 10,823   11,774 12,451 13,304 14,003 14,506 15,584 13,280 15,819 17,447 17,602 18,610 15,850 20,088 21,029 24,271 23,943 25,980 26,165 27,257 23,572 18,973 17,707 18,938 20,569 21,807 20,541 23,277 25,049 23,446 25,928 25,872 25,379 26,624 27,334 25,998 22,552 24,114
C000195205                                                                                    
Account Value [Line Items]                                                                                    
Accumulated Value 500,000 521,145 506,952 541,140   588,677 622,539 665,220 700,163 725,635 779,845 664,628 791,948 874,013 881,781 932,812 794,832 1,007,423 1,055,120 1,217,936 1,201,533 1,303,711 1,313,280 1,367,896 1,182,979 952,360 888,728 950,602 1,032,514 1,094,739 1,031,108 1,168,917 1,257,860 1,177,706 1,302,156 1,299,343 1,275,086 1,338,014 1,374,224 1,307,077 1,134,464 1,213,213
C000231957                                                                                    
Account Value [Line Items]                                                                                    
Accumulated Value 100,000,000 104,229,018 101,390,425 108,227,929   117,735,316 124,507,702 133,043,970 140,032,534 145,061,687 155,838,445 132,794,932 158,192,132 174,470,656 176,024,208 186,095,076 158,497,674 200,881,832 210,285,391 242,714,177 239,433,332 259,801,911 261,647,387 272,527,844 235,686,506 189,809,935 177,202,633 189,529,773 205,919,265 218,316,446 205,639,103 233,165,046 250,955,350 234,986,101 260,060,623 259,570,339 254,737,540 267,344,842 274,559,021 261,251,313 226,721,314 242,550,482
C000115949                                                                                    
Account Value [Line Items]                                                                                    
Line Graph and Table Measure Name         Investor                                                                          
Accumulated Value 10,000 10,661 10,783 11,010   11,567 12,063 12,463 12,872 13,899 15,117 12,274 14,368 15,985 15,443 16,734 13,338 17,436 18,536 22,538 22,567 24,166 24,408 25,824 21,727 18,046 17,282 17,997 19,554 20,596 19,941 22,005 23,830 22,114 24,773 24,406 22,570 23,632 23,671 23,612 21,648 25,080
C000195206                                                                                    
Account Value [Line Items]                                                                                    
Accumulated Value 500,000 533,072 539,164 550,479   578,329 603,133 623,151 644,038 694,952 756,745 614,120 719,278 800,599 773,492 838,533 668,266 873,630 929,122 1,130,136 1,132,073 1,212,486 1,224,596 1,296,378 1,090,564 906,076 867,889 904,092 982,450 1,035,019 1,002,287 1,106,434 1,198,678 1,112,385 1,246,784 1,228,930 1,136,686 1,190,247 1,192,231 1,189,751 1,091,060 1,264,638
C000256263                                                                                    
Account Value [Line Items]                                                                                    
Accumulated Value 100,000,000 106,614,447 107,832,898 110,095,735   115,665,796 120,626,632 124,630,113 128,720,627 138,990,426 151,174,935 122,736,854 143,675,967 159,847,693 154,425,958 167,340,089 133,378,778 174,360,024 185,364,248 225,378,852 225,669,539 241,657,290 244,079,677 258,242,798 217,269,200 180,462,409 172,823,263 179,966,360 195,542,280 205,959,297 199,411,458 220,047,071 238,301,652 221,138,378 247,726,572 244,055,814 225,697,966 236,431,421 236,923,781 236,431,421 216,933,953 251,497,646
S&P 500® Index                                                                                    
Account Value [Line Items]                                                                                    
Line Graph and Table Measure Name         S&P 500<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index                                                                          
Accumulated Value 10,000 10,385 10,782 11,436   11,790 12,318 13,136 13,037 13,484 14,524 12,560 14,275 14,889 15,142 16,515 13,279 16,006 17,436 19,554 20,761 22,536 22,667 25,167 24,009 20,144 19,160 20,609 22,154 24,091 23,302 26,026 28,774 30,006 31,773 32,538 31,148 34,556 37,364 38,356 36,694 42,271
Russell 2500 Index                                                                                    
Account Value [Line Items]                                                                                    
Line Graph and Table Measure Name         Russell 2500<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index                                                                          
Accumulated Value 10,000 10,656 11,309 11,734   11,984 12,552 13,210 13,178 13,931 14,585 11,889 13,769 14,177 13,995 15,190 10,675 13,511 14,306 18,227 20,219 21,319 20,747 21,541 20,288 16,843 16,368 17,584 18,180 19,130 18,215 20,647 22,076 21,132 22,981 23,124 21,390 23,226 25,316 25,878 26,404 31,755
Russell 2500 Index                                                                                    
Account Value [Line Items]                                                                                    
Line Graph and Table Measure Name         Russell 2500<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index                                                                          
Accumulated Value 500,000 532,814 565,444 586,683   599,206 627,618 660,498 658,919 696,535 729,247 594,435 688,460 708,845 699,755 759,487 533,753 675,544 715,283 911,334 1,010,932 1,065,948 1,037,362 1,077,032 1,014,382 842,129 818,401 879,190 908,997 956,491 910,751 1,032,373 1,103,808 1,056,625 1,149,065 1,156,207 1,069,476 1,161,297 1,265,813 1,293,881 1,320,219 1,587,750
Russell 2500 Index                                                                                    
Account Value [Line Items]                                                                                    
Line Graph and Table Measure Name         Russell 2500<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index                                                                          
Accumulated Value 100,000,000 106,562,763 113,088,819 117,336,623   119,841,136 125,523,529 132,099,531 131,783,789 139,307,016 145,849,440 118,887,050 137,692,081 141,768,985 139,951,077 151,897,340 106,750,692 135,108,798 143,056,565 182,266,819 202,186,364 213,189,674 207,472,500 215,406,427 202,876,339 168,425,864 163,680,286 175,837,947 181,799,374 191,298,291 182,150,259 206,474,666 220,761,644 211,324,949 229,813,034 231,241,365 213,895,174 232,259,357 253,162,535 258,776,146 264,043,808 317,550,066
Russell 2000 Index                                                                                    
Account Value [Line Items]                                                                                    
Line Graph and Table Measure Name         Russell 2000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index                                                                          
Accumulated Value 10,000 10,905 11,868 12,160   12,460 13,166 13,606 13,595 14,649 15,173 12,108 13,873 14,164 13,824 15,198 10,545 13,226 13,878 18,232 20,547 21,429 20,495 20,933 19,358 16,029 15,679 16,655 17,111 18,002 17,079 19,475 20,484 19,812 21,650 21,722 19,663 21,334 23,979 24,504 24,721 30,034
Russell 2000 Index                                                                                    
Account Value [Line Items]                                                                                    
Line Graph and Table Measure Name         Russell 2000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index                                                                          
Accumulated Value 500,000 545,229 593,392 608,025   623,004 658,319 680,308 679,735 732,440 758,635 605,379 693,668 708,201 691,198 759,901 527,260 661,282 693,896 911,584 1,027,347 1,071,446 1,024,727 1,046,671 967,901 801,469 783,939 832,769 855,569 900,103 853,945 973,747 1,024,188 990,619 1,082,477 1,086,097 983,147 1,066,711 1,198,927 1,225,193 1,236,059 1,501,703
Russell 2000 Index                                                                                    
Account Value [Line Items]                                                                                    
Line Graph and Table Measure Name         Russell 2000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index                                                                          
Accumulated Value 100,000,000 109,045,897 118,678,427 121,604,929   124,600,776 131,663,791 136,061,650 135,947,061 146,487,999 151,726,903 121,075,807 138,733,578 141,640,142 138,239,632 151,980,288 105,451,926 132,256,332 138,779,111 182,316,886 205,469,361 214,289,214 204,945,407 209,334,260 193,580,174 160,293,731 156,787,800 166,553,795 171,113,703 180,020,641 170,788,974 194,749,479 204,837,699 198,123,746 216,495,438 217,219,498 196,629,335 213,342,171 239,785,339 245,038,563 247,211,826 300,340,597
Russell Midcap Growth Index                                                                                    
Account Value [Line Items]                                                                                    
Line Graph and Table Measure Name         Russell Midcap Growth<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index                                                                          
Accumulated Value 10,000 10,459 10,507 11,231   11,705 12,323 13,162 13,448 13,873 14,923 12,537 14,996 15,806 15,700 16,983 13,580 17,689 19,347 23,027 22,897 25,432 25,239 25,958 22,692 17,911 17,794 19,022 20,759 22,054 20,902 23,942 26,216 25,373 27,033 29,234 27,152 32,095 32,987 31,765 29,748 34,075
Russell Midcap Growth Index                                                                                    
Account Value [Line Items]                                                                                    
Line Graph and Table Measure Name         Russell Midcap Growth<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index                                                                          
Accumulated Value 500,000 522,960 525,345 561,563   585,234 616,151 658,087 672,398 693,628 746,168 626,825 749,814 790,318 784,995 849,158 678,987 884,455 967,360 1,151,343 1,144,835 1,271,593 1,261,930 1,297,889 1,134,610 895,528 889,680 951,081 1,037,971 1,102,681 1,045,077 1,197,095 1,310,778 1,268,658 1,351,645 1,461,690 1,357,616 1,604,726 1,649,327 1,588,229 1,487,391 1,703,769
Russell Midcap Growth Index                                                                                    
Account Value [Line Items]                                                                                    
Line Graph and Table Measure Name         Russell Midcap Growth<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Index                                                                          
Accumulated Value 100,000,000 104,591,972 105,069,054 112,312,616   117,046,737 123,230,221 131,617,480 134,479,530 138,725,629 149,233,510 125,365,012 149,962,883 158,063,614 156,999,029 169,831,604 135,797,405 176,890,931 193,471,967 230,268,690 228,967,097 254,318,590 252,385,921 259,577,780 226,922,055 179,105,576 177,936,052 190,216,150 207,594,104 220,536,125 209,015,362 239,419,047 262,155,602 253,731,645 270,329,033 292,338,073 271,523,132 320,945,245 329,865,330 317,645,761 297,478,248 340,753,715
Russell 2000 Growth Index                                                                                    
Account Value [Line Items]                                                                                    
Line Graph and Table Measure Name         Russell 2000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Growth Index                                                                          
Accumulated Value 10,000 10,922 11,312 11,917   12,440 13,214 13,820 14,137 15,160 15,997 12,533 14,682 15,086 14,456 16,103 11,954 15,610 16,728 21,680 22,737 23,628 22,292 22,295 19,479 15,729 15,767 16,418 17,415 18,644 17,279 19,482 20,959 20,347 22,058 22,434 19,940 22,326 25,049 25,353 24,642 30,976
Russell 2000 Growth Index                                                                                    
Account Value [Line Items]                                                                                    
Line Graph and Table Measure Name         Russell 2000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Growth Index                                                                          
Accumulated Value 500,000 546,107 565,604 595,857   622,008 660,687 690,980 706,868 757,993 799,859 626,664 734,105 754,278 722,801 805,160 597,711 780,516 836,385 1,084,005 1,136,853 1,181,389 1,114,610 1,114,734 973,972 786,441 788,343 820,918 870,770 932,182 863,959 974,089 1,047,943 1,017,352 1,102,912 1,121,705 997,019 1,116,318 1,252,439 1,267,669 1,232,078 1,548,800
Russell 2000 Growth Index                                                                                    
Account Value [Line Items]                                                                                    
Line Graph and Table Measure Name         Russell 2000<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Growth Index                                                                          
Accumulated Value $ 100,000,000 $ 109,221,426 $ 113,120,847 $ 119,171,407   $ 124,401,693 $ 132,137,309 $ 138,195,980 $ 141,373,647 $ 151,598,661 $ 159,971,819 $ 125,332,800 $ 146,820,939 $ 150,855,631 $ 144,560,278 $ 161,031,915 $ 119,542,132 $ 156,103,137 $ 167,276,957 $ 216,801,057 $ 227,370,610 $ 236,277,778 $ 222,921,914 $ 222,946,871 $ 194,794,464 $ 157,288,105 $ 157,668,521 $ 164,183,667 $ 174,154,051 $ 186,436,322 $ 172,791,739 $ 194,817,799 $ 209,588,511 $ 203,470,337 $ 220,582,345 $ 224,340,963 $ 199,403,742 $ 223,263,625 $ 250,487,818 $ 253,533,896 $ 246,415,565 $ 309,760,095