Acquisitions (Details 3) (Fauchier)	3 Months Ended
	Mar. 31, 2013
Indefinite-life fund management contracts
Projected Cash Flow Growth Rate, Low End of Range	(35.00%)
Projected Cash Flow Growth Rate, High End of Range	11.00%
Projected Cash Flow Growth Rate, Weighted-Average	6.00%
Discount rate	16.00%
Contingent Consideration
Projected Cash Flow Growth Rate, Low End of Range	(16.00%)
Projected Cash Flow Growth Rate, High End of Range	1.00%
Projected Cash Flow Growth Rate, Weighted-Average	(5.00%)
Discount rate	2.00%