CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Assets
Cash and cash equivalents	$ 44,868	$ 36,672
Cash and securities segregated for regulatory and other purposes	13,000	9,612
Securities purchased under agreements to resell		1,523,227
Receivables from:
Brokers, dealers and clearing organizations	12,824	58,776
Related parties	1,474	1,337
Others	12,563	16,161
Financial instruments owned, at fair value (includes financial instruments pledged of $1,095,431 and $1,553,610 at December 31, 2012 and 2011, respectively)	1,096,181	1,554,660
Investments	20,478	18,310
Office equipment and leasehold improvements, net	5,311	6,735
Goodwill	1,212	21,096
Intangible assets	5,303	4,311
Income taxes receivable	7,394	12,102
Deferred tax assets, net		30,766
Other assets	9,030	9,791
Total Assets	1,229,638	3,303,556
Payables to:
Brokers, dealers and clearing organizations	638,009	1,108,664
Related parties	2,944	4,939
Others	2,251	3,243
Securities sold under agreements to repurchase	159,386	1,478,081
Securities sold, but not yet purchased, at fair value	132,730	184,996
Secured borrowings	64,908	213,611
Accrued compensation	34,199	26,274
Accounts payable and accrued expenses	9,866	18,223
Income taxes payable	3,755	3,979
Deferred tax liabilities		1,622
Subordinated debt	595	801
Total Liabilities	1,048,643	3,044,433
Commitments and Contingencies (Refer to Note 19)
Stockholders' Equity
Common stock; $.01 par value; authorized 200,000,000 shares, issued 133,769,219 and 133,714,786 shares; and outstanding 124,440,655 and 120,883,601 shares, at December 31, 2012 and 2011, respectively	1,337	1,337
Additional paid-in capital	453,938	463,497
Deferred compensation	124	161
Accumulated deficit	(263,577)	(185,887)
Treasury stock, at cost (9,328,564 shares and 12,831,185 shares, at December 31, 2012 and December 31, 2011, respectively)	(10,827)	(19,985)
Total Stockholders' Equity	180,995	259,123
Total Liabilities and Stockholders' Equity	$ 1,229,638	$ 3,303,556