Consolidated Statements of Financial Condition (Unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
ASSETS
Cash and cash equivalents	$ 119,809	$ 169,620
Securities available-for-sale	60,086	78,110
Accounts receivable, net of allowance of $402 and $1,086 as of March 31, 2012 and December 31, 2011, respectively	33,039	36,170
Deferred tax assets, net	5,684	8,089
Goodwill and intangible assets, net of accumulated amortization	34,189	34,544
Capitalized software, furniture, equipment and leasehold improvements, net of accumulated depreciation and amortization	14,875	14,460
Prepaid expenses and other assets	6,828	8,465
Total assets	274,510	349,458
Liabilities
Accrued employee compensation	5,817	19,425
Deferred revenue	5,229	5,326
Accounts payable, accrued expenses and other liabilities	14,547	12,268
Total liabilities	25,593	37,019
Commitments and Contingencies (Note 10)
Stockholders' equity
Preferred stock
Additional paid-in capital	270,590	340,716
Treasury stock - Common stock voting, at cost, 1,360,711 shares and 1,541,739 shares as of March 31, 2012 and December 31, 2011, respectively	(28,283)	(25,933)
Retained earnings (deficit)	8,708	(584)
Accumulated other comprehensive loss	(2,213)	(1,882)
Total stockholders' equity	248,917	312,439
Total liabilities and stockholders' equity	274,510	349,458
Series A Preferred Stock [Member]
Stockholders' equity
Preferred stock
Common Stock Voting
Stockholders' equity
Common stock	115	113
Total stockholders' equity	115	113
Common Stock Non-Voting
Stockholders' equity
Common stock		9
Total stockholders' equity	$ 0	$ 9