Consolidated Statements of Cash Flows (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Operating activities:
Net income	$ 25,406	$ 19,826
Adjustments to reconcile net income to cash provided by operating activities:
Increase in accrued interest receivable	(6,248)	451
Increase (decrease) in accrued interest payable	161	(418)
Provision for loan losses	750	770
Gain on sale of investments, net	(1,323)	(794)
Loss (gain) on non-recourse collateralized financing	1,970	(561)
Fair value adjustments, net	657	(230)
Increase in litigation settlement and related costs reserve	7,861	0
Amortization and depreciation	22,312	4,266
Stock-based compensation expense	492	558
Net change in other assets and other liabilities	1,564	(3,302)
Net cash and cash equivalents provided by operating activities	53,602	20,566
Investing activities:
Purchase of investments	(1,440,594)	(432,182)
Principal payments received on investments	344,649	207,485
(Increase) decrease in principal receivable on investments	(6,566)	168
Proceeds from sales of investments	124,797	50,882
Principal payments received on securitized mortgage loans	32,655	51,109
Other investing activities	77	(295)
Net cash and cash equivalents used in investing activities	(944,982)	(122,833)
Financing activities:
Borrowings under (repayment of) repurchase agreements, net	819,503	106,818
Borrowings under non-recourse collateralized financing	0	50,678
Principal payments on non-recourse collateralized financing	(2,094)	(42,652)
Cash paid to redeem non-recourse collateralized financing	0	(56,406)
Proceeds from issuance of common stock	95,261	44,010
Dividends paid	(29,970)	(13,160)
Net cash and cash equivalents provided by (used in) financing activities	882,700	89,288
Net increase in cash and cash equivalents	(8,680)	(12,979)
Cash and cash equivalents at beginning of period	18,836	30,173
Cash and cash equivalents at end of period	10,156	17,194
Supplemental Disclosure of Cash Activities:
Cash paid for interest	$ 16,411	$ 11,751