CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
ASSETS
Cash and cash equivalents	$ 20,018	$ 12,412
Receivables
Interest	2,366	2,345
Sold securities receivable	41,321	0
Other	11	219
Mortgage-backed securities, at fair value
Available-for-sale	179,566	252,909
Trading	636,872	174,055
Other investments	2,946	8,287
Derivative assets, at fair value	504	0
Deposits	71,079	4,748
Prepaid expenses and other assets	377	358
Total assets	955,060	455,333
Liabilities:
Repurchase agreements	647,977	190,220
Purchased securities payable	15,820	2,555
Interest payable	504	187
Accrued compensation and benefits	6,177	7,201
Dividend payable	6,785	4,655
Derivative liabilities, at fair value	63,024	2,398
Accounts payable, accrued expenses and other liabilities	16,401	16,373
Long-term debt	15,000	15,000
Total liabilities	771,688	238,589
Commitments and contingencies (Note 7)
Equity:
Preferred stock, $0.01 par value, 25,000,000 shares authorized, none issued and outstanding	0	0
Additional paid-in capital	1,508,713	1,505,971
Accumulated other comprehensive income, net of taxes	38,367	63,495
Accumulated deficit	(1,363,785)	(1,352,799)
Total equity	183,372	216,744
Total liabilities and equity	955,060	455,333
Class A [Member]
Equity:
Common stock	71	71
Class B [Member]
Equity:
Common stock	$ 6	$ 6