XML 31 R35.htm IDEA: XBRL DOCUMENT v2.4.0.6

Stock-Based Compensation (Details 1) (Restricted Stock Units (RSUs) [Member], USD $)	Mar. 31, 2013
Restricted Stock Units (RSUs) [Member]
Expense recognition of deferred compensation
2013	$ 3,565,008
2014	4,504,668
2015	3,600,176
2016	1,760,806
2017	919,413
2018	38,905
Total	$ 14,388,976

X

- Definition

Employee service share based compensation nonvested awards compensation cost not yet recognized current.

+ References

No definition available.

+ Details

Name:	dhil_EmployeeServiceShareBasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedCurrent
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 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

- Details

Name:	us-gaap_DeferredCompensationArrangementsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

+ 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



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph h

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Name:	us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant