v3.26.1
Expense Example
Apr. 30, 2026
USD ($)
Driehaus Emerging Markets Growth Fund | Investor Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 117
Expense Example, with Redemption, 3 Years 365
Expense Example, with Redemption, 5 Years 633
Expense Example, with Redemption, 10 Years 1,398
Driehaus Emerging Markets Growth Fund | Institutional Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 93
Expense Example, with Redemption, 3 Years 290
Expense Example, with Redemption, 5 Years 504
Expense Example, with Redemption, 10 Years 1,120
Driehaus Emerging Markets Small Cap Growth Fund | Driehaus Emerging Markets Small Cap Growth Fund Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 127
Expense Example, with Redemption, 3 Years 409
Expense Example, with Redemption, 5 Years 712
Expense Example, with Redemption, 10 Years 1,574
Driehaus Global Fund | Driehaus Global Fund Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 78
Expense Example, with Redemption, 3 Years 262
Expense Example, with Redemption, 5 Years 463
Expense Example, with Redemption, 10 Years 1,041
Driehaus International Small Cap Growth Fund | Driehaus International Small Cap Growth Fund Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 116
Expense Example, with Redemption, 3 Years 362
Expense Example, with Redemption, 5 Years 628
Expense Example, with Redemption, 10 Years 1,386
Driehaus International Developed Equity Fund | Driehaus International Developed Equity Fund Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 83
Expense Example, with Redemption, 3 Years 896
Expense Example, with Redemption, 5 Years 1,728
Expense Example, with Redemption, 10 Years 3,893
Driehaus Micro Cap Growth Fund | Driehaus Micro Cap Growth Fund Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 136
Expense Example, with Redemption, 3 Years 425
Expense Example, with Redemption, 5 Years 734
Expense Example, with Redemption, 10 Years 1,613
Driehaus Small Cap Growth Fund | Investor Share Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 95
Expense Example, with Redemption, 3 Years 296
Expense Example, with Redemption, 5 Years 515
Expense Example, with Redemption, 10 Years 1,143
Driehaus Small Cap Growth Fund | Institutional Share Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 70
Expense Example, with Redemption, 3 Years 221
Expense Example, with Redemption, 5 Years 384
Expense Example, with Redemption, 10 Years 859
Driehaus Small/Mid Cap Growth Fund  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 82
Expense Example, with Redemption, 3 Years 253
Expense Example, with Redemption, 5 Years 440
Expense Example, with Redemption, 10 Years $ 979