Consolidated Statements of Financial Condition (Unaudited) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
ASSETS
Cash and cash equivalents	$ 157,622	$ 124,994
Securities available-for-sale, at fair value	80,200	72,552
Accounts receivable, net of allowance of $191 and $427 as of September 30, 2011 and December 31, 2010, respectively	31,858	25,682
Deferred tax assets, net	9,589	19,813
Goodwill and intangible assets, net of accumulated amortization	34,911	36,012
Furniture, equipment, leasehold improvements and capitalized software, net of accumulated depreciation and amortization	14,076	12,545
Prepaid expenses and other assets	10,944	7,923
Total assets	339,200	299,521
Liabilities
Accrued employee compensation	15,672	17,791
Deferred revenue	5,037	4,571
Accounts payable, accrued expenses and other liabilities	12,658	12,368
Total liabilities	33,367	34,730
Commitments and Contingencies (Note 10)
Series B Preferred Stock, $0.001 par value, 35,000 shares authorized; zero and 35,000 issued and outstanding as of September 30, 2011 and December 31, 2010, respectively	0	30,315
Stockholders' equity
Preferred stock
Additional paid-in capital	335,084	340,615
Treasury stock-Common stock voting, at cost, 1,303,741 shares and 4,803,740 shares as of September 30, 2011 and December 31, 2010, respectively	(18,998)	(70,000)
Accumulated deficit	(8,680)	(34,605)
Accumulated other comprehensive loss	(1,692)	(1,651)
Total stockholders' equity	305,833	234,476
Total liabilities and stockholders' equity	339,200	299,521
Series A Preferred Stock
Stockholders' equity
Preferred stock
Common Stock Voting
Stockholders' equity
Common stock	110	108
Total stockholders' equity	110	108
Common Stock Non-Voting
Stockholders' equity
Common stock	9	9
Total stockholders' equity	$ 9	$ 9