Shareholder Fees	Apr. 30, 2026 USD ($)
Driehaus Emerging Markets Growth Fund \| Investor Shares
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	0.00%
Exchange Fee	$ 0
Driehaus Emerging Markets Growth Fund \| Institutional Shares
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	0.00%
Exchange Fee	$ 0
Driehaus Emerging Markets Small Cap Growth Fund \| Driehaus Emerging Markets Small Cap Growth Fund Shares
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	0.00%
Exchange Fee	$ 0
Driehaus Global Fund \| Driehaus Global Fund Shares
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	0.00%
Exchange Fee	$ 0
Driehaus International Small Cap Growth Fund \| Driehaus International Small Cap Growth Fund Shares
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	0.00%
Exchange Fee	$ 0
Driehaus International Developed Equity Fund \| Driehaus International Developed Equity Fund Shares
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	0.00%
Exchange Fee	$ 0
Driehaus Micro Cap Growth Fund \| Driehaus Micro Cap Growth Fund Shares
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	(2.00%)
Exchange Fee	$ 0
Driehaus Small Cap Growth Fund \| Investor Share Class
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	0.00%
Exchange Fee	$ 0
Driehaus Small Cap Growth Fund \| Institutional Share Class
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	0.00%
Exchange Fee	$ 0
Driehaus Small/Mid Cap Growth Fund \| Driehaus Small/Mid Cap Growth Fund Shares
Prospectus [Line Items]
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)	0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price)	0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)	0.00%
Redemption Fee (as a percentage of Amount Redeemed)	0.00%
Exchange Fee	$ 0

- References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 3
-Subsection instruction
-Paragraph 2

+ Details

Name:	oef_ExchangeFee
Namespace Prefix:	oef_
Data Type:	dtr-types:nonNegativeMonetaryItemType
Balance Type:	na
Period Type:	duration

- References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 3
-Subsection instruction
-Paragraph 2

+ Details

Name:	oef_MaximumDeferredSalesChargeOverOfferingPrice
Namespace Prefix:	oef_
Data Type:	oef:nonNegativePure4ItemType
Balance Type:	na
Period Type:	duration

- References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 3
-Subsection instruction
-Paragraph 2

+ Details

Name:	oef_MaximumDeferredSalesChargeOverOther
Namespace Prefix:	oef_
Data Type:	oef:nonNegativePure4ItemType
Balance Type:	na
Period Type:	duration

- References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 3
-Subsection instruction
-Paragraph 2

+ Details

Name:	oef_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice
Namespace Prefix:	oef_
Data Type:	oef:nonNegativePure4ItemType
Balance Type:	na
Period Type:	duration

- References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 3
-Subsection instruction
-Paragraph 2

+ Details

Name:	oef_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther
Namespace Prefix:	oef_
Data Type:	oef:nonNegativePure4ItemType
Balance Type:	na
Period Type:	duration

- References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 1
-Subsection a

+ Details

Name:	oef_ProspectusLineItems
Namespace Prefix:	oef_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Form N-1A
-Section 3
-Subsection instruction
-Paragraph 2

+ Details

Name:	oef_RedemptionFeeOverRedemption
Namespace Prefix:	oef_
Data Type:	oef:nonPositivePure4ItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	dei_LegalEntityAxis=driehaus_S000001909Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	oef_ClassAxis=driehaus_C000005025Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	oef_ClassAxis=driehaus_C000190956Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=driehaus_S000032990Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	oef_ClassAxis=driehaus_C000101771Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=driehaus_S000056073Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	oef_ClassAxis=driehaus_C000176647Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=driehaus_S000018408Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	oef_ClassAxis=driehaus_C000050883Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=driehaus_S000084840Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	oef_ClassAxis=driehaus_C000249377Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=driehaus_S000042829Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	oef_ClassAxis=driehaus_C000132648Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=driehaus_S000058261Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	oef_ClassAxis=driehaus_C000190998Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	oef_ClassAxis=driehaus_C000190999Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=driehaus_S000068519Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	oef_ClassAxis=driehaus_C000219126Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: