XML 37 R26.htm IDEA: XBRL DOCUMENT v3.5.0.2

Significant Accounting Policies Schedule of Fee by Series and Share Class (Details)	6 Months Ended			12 Months Ended
	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2015
Class A [Member]
Revenue Recognition Principal Transaction [Line Items]
Rate of Administrative Service Fees	0.24%			0.24%
Class C [Member]
Revenue Recognition Principal Transaction [Line Items]
Rate of Administrative Service Fees	0.24%			0.24%
Class Y [Member]
Revenue Recognition Principal Transaction [Line Items]
Rate of Administrative Service Fees	0.10%			0.10%
Class I [Member]
Revenue Recognition Principal Transaction [Line Items]
Rate of Administrative Service Fees	0.20%	0.21%	0.24%

X

- Definition

Rate of administrative service fees.

+ References

No definition available.

+ Details

Name:	dhil_RateOfAdministrativeServiceFees
Namespace Prefix:	dhil_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Revenue recognition principal transaction.

+ References

No definition available.

+ Details

Name:	dhil_RevenueRecognitionPrincipalTransactionLineItems
Namespace Prefix:	dhil_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_PrincipleTransactionRevenueDescriptionOfReportingCategoryAxis=dhil_ClassAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PrincipleTransactionRevenueDescriptionOfReportingCategoryAxis=dhil_ClassCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PrincipleTransactionRevenueDescriptionOfReportingCategoryAxis=dhil_ClassYMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PrincipleTransactionRevenueDescriptionOfReportingCategoryAxis=dhil_ClassIMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: