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Significant Accounting Policies (Details 3) (USD $)
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mutual fund administration:    
Administration revenue, gross $ 3,615,730 $ 3,109,859
12b-1/service fees and commission revenue received from fund clients 1,812,388 1,729,352
12b-1/service fees and commission expense payments to third parties (1,588,813) (1,358,249)
Fund related expense (1,339,773) (1,242,997)
Revenue, net of fund related expenses 2,499,532 2,237,965
DHCM C-Share financing:    
Broker commission advance repayments 56,658 62,407
Broker commission amortization (54,010) (61,246)
Financing activity, net 2,648 1,161
Mutual fund administration revenue, net $ 2,502,180 $ 2,239,126