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Significant Accounting Policies - Mutual Fund Administration Gross and Net Revenue (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Mutual fund administration:
Administration revenue, gross	$ 4,320,959	$ 3,349,027	$ 11,951,844	$ 9,675,532
12b-1/service fees and commission revenue received from fund clients	2,277,421	1,734,552	6,074,489	5,168,905
12b-1/service fees and commission expense payments to third parties	(1,992,664)	(1,393,257)	(5,319,674)	(4,187,324)
Fund related expense	(1,672,077)	(1,443,635)	(4,472,506)	(4,117,290)
Revenue, net of fund related expenses	2,933,639	2,246,687	8,234,153	6,539,823
DHCM C-Share financing:
Broker commission advance repayments	100,003	46,077	221,335	166,746
Broker commission amortization	(96,998)	(52,378)	(213,888)	(167,255)
Financing activity, net	3,005	(6,301)	7,447	(509)
Mutual fund administration revenue, net	$ 2,936,644	$ 2,240,386	$ 8,241,600	$ 6,539,314

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Revenue from administrative services excluding financial activity net.

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Amount of fees and commissions from financial services and banking activities and correspondent clearing. Includes fees from depositor accounts, credit cards, merchant discounts, and fiduciary and trust activities, guarantee fees, investment advisory, management, and administrative fees, transfer agent fees, and insurance commissions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-04.13)

-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 13

-Article 9

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