XML 31 R29.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Significant Accounting Policies - Schedule of Fee by Series and Share Class (Details) | Feb. 29, 2012
--- | ---
Class A, C, and I Shares |
Revenue Recognition Principal Transaction [Line Items] |
Rate of Administrative Service Fees | 0.25%
Class Y |
Revenue Recognition Principal Transaction [Line Items] |
Rate of Administrative Service Fees | 0.10%

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: | instant

X
- Details
Name: | dhil_RevenueRecognitionPrincipalTransactionLineItems
Namespace Prefix: | dhil_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration