Consolidated Statements of Financial Condition (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
ASSETS
Cash and cash equivalents	$ 133,154	$ 132,691
Securities available-for-sale, at fair value	65,742	67,742
Accounts receivable, net of allowance of $14 and $133 as of June 30, 2014 and December 31, 2013, respectively	40,896	34,158
Goodwill and intangible assets, net of accumulated amortization	67,558	68,697
Furniture, equipment, leasehold improvements and capitalized software, net of accumulated depreciation and amortization	34,396	32,703
Prepaid expenses and other assets	12,356	10,640
Deferred tax assets, net	2,617	4,947
Total assets	356,719	351,578
Liabilities
Accrued employee compensation	12,196	23,811
Deferred revenue	2,950	2,713
Accounts payable, accrued expenses and other liabilities	18,594	14,692
Total liabilities	33,740	41,216
Commitments and Contingencies (Note 11)
Stockholders’ equity
Preferred stock
Common stock	119	119
Additional paid-in capital	298,661	295,557
Treasury stock - Common stock voting, at cost, 1,737,946 and 1,495,159 shares as of June 30, 2014 and December 31, 2013, respectively	(46,021)	(32,273)
Retained earnings	74,650	51,042
Accumulated other comprehensive loss	(4,430)	(4,083)
Total stockholders’ equity	322,979	310,362
Total liabilities and stockholders’ equity	356,719	351,578
Series A Preferred Stock [Member]
Stockholders’ equity
Preferred stock
Common Stock Non-Voting [Member]
Stockholders’ equity
Common stock