Condensed Consolidated Statements of Financial Condition - USD ($) $ in Thousands		Jun. 30, 2016	Dec. 31, 2015
Assets
Cash and cash equivalents		$ 57,783	$ 158,485
Cash collateral pledged		13,772	10,085
Securities owned, at fair value		471,754	610,234
Receivable on derivative contracts, at fair value		24,971	39,618
Other investments		158,978	140,647
Receivable from brokers		116,906	117,757
Fees receivable, net of allowance		45,352	34,413
Due from related parties		35,525	39,659
Fixed assets, net of accumulated depreciation and amortization of $26,876 and $29,953, respectively		45,115	27,231
Goodwill		61,880	58,361
Intangible assets, net of accumulated amortization of $30,707 and $28,301, respectively		28,381	25,663
Deferred tax assets, net		158,286	143,560
Other assets		53,168	71,531
Consolidated Funds
Cash and cash equivalents		7,942	13,934
Securities owned, at fair value		53,528	32,000
Receivable on derivatives		60	0
Other investments		374,683	263,818
Other assets		1,247	663
Total Assets		1,709,331	1,787,659
Liabilities
Securities sold, not yet purchased, at fair value		285,414	257,159
Payable for derivative contracts, at fair value		14,856	21,183
Payable to brokers		9,296	131,789
Compensation payable		13,235	150,403
Notes payable and other debt		104,752	68,565
Convertible debt	[1]	126,138	122,401
Fees payable		2,524	5,638
Due to related parties		264	329
Accounts payable, accrued expenses and other liabilities		64,967	52,233
Consolidated Funds
Due to related parties		0	3
Contributions received in advance		0	850
Securities sold, not yet purchased, Consolidated Funds		1,553	0
Payable to brokers		732	0
Capital withdrawals payable		0	78
Accounts payable, accrued expenses and other liabilities		323	124
Total Liabilities		624,054	810,755
Commitments and Contingencies
Redeemable non-controlling interests		315,123	186,911
Stockholders' equity
Additional paid-in capital		914,846	902,554
(Accumulated deficit) retained earnings		6,077	23,627
Accumulated other comprehensive income (loss)		(5)	0
Less: Class A common stock held in treasury, at cost, 38,749,780 and 34,515,734 shares as of June 30, 2016 and December 31, 2015, respectively.		(151,932)	(137,356)
Total Stockholders' Equity		770,154	789,993
Total Liabilities and Stockholders' Equity		1,709,331	1,787,659
Convertible Preferred Stock
Stockholders' equity
Preferred stock		1	1
Common Stock Class A
Stockholders' equity
Common stock		1,167	1,167
Less: Class A common stock held in treasury, at cost, 38,749,780 and 34,515,734 shares as of June 30, 2016 and December 31, 2015, respectively.		(151,932)	(137,356)
Common Stock Class B
Stockholders' equity
Common stock		$ 0	$ 0

[1] The carrying amount of the convertible debt includes an unamortized discount of $21.4 million and $24.7 million as of June 30, 2016 and December 31, 2015.