Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
ASSETS
Cash and cash equivalents	$ 137,655	$ 168,243
Investments, at fair value	218,559	194,404
Accounts receivable, net of allowance of $57 and $82 as of March 31, 2017 and December 31, 2016, respectively	56,642	50,668
Goodwill and intangible assets, net of accumulated amortization	63,347	63,443
Furniture, equipment, leasehold improvements and capitalized software, net of accumulated depreciation and amortization	33,888	31,104
Prepaid expenses and other assets	13,794	11,618
Deferred tax assets, net	6,829	8,562
Total assets	530,714	528,042
Liabilities
Accrued employee compensation	13,872	34,783
Income and other tax liabilities	15,028	7,582
Deferred revenue	3,190	2,515
Accounts payable, accrued expenses and other liabilities	16,269	15,149
Total liabilities	48,359	60,029
Commitments and Contingencies (Note 10)
Stockholders’ equity
Additional paid-in capital	339,191	342,311
Treasury stock - Common stock voting, at cost, 2,625,402 and 2,562,585 shares as of March 31, 2017 and December 31, 2016, respectively	(129,537)	(117,330)
Retained earnings	285,150	255,140
Accumulated other comprehensive loss	(12,570)	(12,228)
Total stockholders’ equity	482,355	468,013
Total liabilities and stockholders’ equity	530,714	528,042
Undefined Preferred Stock [Member]
Stockholders’ equity
Preferred stock
Series A Preferred Stock [Member]
Stockholders’ equity
Preferred stock
Voting Common Stock [Member]
Stockholders’ equity
Common stock	$ 121	$ 120