Condensed Consolidated Statements of Financial Condition (Parenthetical) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Class A Units [Member]
Common stock, par value	$ 0	$ 0
Common stock, shares authorized	Unlimited	Unlimited
Common stock, shares issued	38,239,441	30,180,933
Common stock, shares outstanding	38,239,441	30,180,933
Class B Units [Member]
Common stock, par value	$ 0	$ 0
Common stock, shares authorized	Unlimited	Unlimited
Common stock, shares issued	112,821,276	120,267,503
Common stock, shares outstanding	112,821,276	120,267,503