XML 52 R38.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Stock-Based Compensation - Summary of Deferred Compensation Expense Recognition (Details) - Restricted Stock Units (RSUs) | Dec. 31, 2016 USD ($)
--- | ---
Expense recognition of deferred compensation |
2017 | $ 6,152,255
2018 | 4,353,599
2019 | 3,617,145
2020 | 2,087,404
2021 | 662,735
Thereafter | 854,968
Total | $ 17,728,106

X
- Definition Employee service share based compensation nonvested awards compensation cost not yet recognized in year five. + References No definition available. + Details
Name: | dhil_EmployeeServiceShareBasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedInYearFive
Namespace Prefix: | dhil_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Employee service share based compensation nonvested awards compensation cost not yet recognized in year four + References No definition available. + Details
Name: | dhil_EmployeeServiceShareBasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedInYearFour
Namespace Prefix: | dhil_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Employee service share based compensation nonvested awards compensation cost not yet recognized in year one. + References No definition available. + Details
Name: | dhil_EmployeeServiceShareBasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedInYearOne
Namespace Prefix: | dhil_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Employee service share based compensation nonvested awards compensation cost not yet recognized in year three. + References No definition available. + Details
Name: | dhil_EmployeeServiceShareBasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedInYearThree
Namespace Prefix: | dhil_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Employee service share based compensation nonvested awards compensation cost not yet recognized in year two. + References No definition available. + Details
Name: | dhil_EmployeeServiceShareBasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedInYearTwo
Namespace Prefix: | dhil_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Employee Service Share Based Compensation Nonvested Awards Compensation Cost Not Yet Recognized Thereafter + References No definition available. + Details
Name: | dhil_EmployeeServiceShareBasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedThereafter
Namespace Prefix: | dhil_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_DeferredCompensationArrangementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Unrecognized cost of unvested share-based compensation awards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |