Condensed Combined Statements of Financial Condition (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Assets
Cash and cash equivalents	$ 263,366	$ 303,024
Restricted cash	799	792
Receivables:
Accounts receivable, net of allowance for doubtful accounts of $1,728 and $773 as of 2014 and 2013, respectively	29,341	28,784
Other receivables, net of allowance for doubtful accounts of $723 and $1,080 as of 2014 and 2013, respectively	5,559	6,559
Total receivables	34,900	35,343
Deferred compensation	9,344	3,495
Investments at fair value (cost basis $69,066 as of 2013)		68,141
Investment in joint venture	15,657	12,481
Equipment and leasehold improvements, net	5,347	5,156
Deferred tax asset	1,315	1,315
Prepaid expenses and other assets	19,707	13,716
Total assets	350,435	443,463
Liabilities and Parent Company Equity
Compensation payable	35,092	104,527
Accounts payable and accrued expenses	14,649	14,262
Deferred revenue	8,135	6,838
Other liabilities	8,736	8,466
Total liabilities	66,612	134,093
Commitments and Contingencies (See Note 10)
Parent company investment	282,896	308,444
Accumulated other comprehensive income	927	926
Total parent company equity	283,823	309,370
Total liabilities and parent company equity	350,435	443,463
Pro Forma
Assets
Cash and cash equivalents	48,866
Restricted cash	799
Receivables:
Accounts receivable, net of allowance for doubtful accounts of $1,728 and $773 as of 2014 and 2013, respectively	29,341
Other receivables, net of allowance for doubtful accounts of $723 and $1,080 as of 2014 and 2013, respectively	5,559
Total receivables	34,900
Deferred compensation	9,344
Investment in joint venture	15,657
Equipment and leasehold improvements, net	5,347
Deferred tax asset	5,071
Prepaid expenses and other assets	19,707
Total assets	139,691
Liabilities and Parent Company Equity
Compensation payable	35,092
Accounts payable and accrued expenses	14,649
Deferred revenue	8,135
Other liabilities	8,736
Total liabilities	66,612
Commitments and Contingencies (See Note 10)
Accumulated other comprehensive income	927
Additional paid-in-capital	15,006
Noncontrolling interests	56,707
Total parent company equity	73,079
Total liabilities and parent company equity	139,691
Pro Forma | Class A common stock
Liabilities and Parent Company Equity
Common stock, par value $0.01 per share	77
Pro Forma | Class B common stock
Liabilities and Parent Company Equity
Common stock, par value $0.01 per share	$ 362