CONSOLIDATED STATEMENTS OF CASH FLOWS, (Unaudited) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ (148,727)	$ (29,369)
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
Stock based compensation and equity plan amortization	162	259
Realized and unrealized (gains) losses on mortgage-backed securities	360,350	96,263
Fair Value Adjustments On U.S. Treasury Notes	(698)	0
Derivative, Gain (Loss) on Derivative, Net	(101,921)	(45,914)
Changes in operating assets and liabilities
Accrued interest receivable	4,006	(1,050)
Other assets	(833)	(588)
Accrued interest payable	230	(236)
Other liabilities	204	5,318
Due to affiliates	4	80
NET CASH (USED IN) PROVIDED BY OPERATING ACTIVITIES	114,173	24,763
From mortgage-backed securities investments
Purchases	0	(1,764,082)
Sales	1,413,039	988,523
Principal repayments	157,112	123,880
Note proceeds from (payments on) derivative instruments	(103,900)	10,674
NET CASH USED IN INVESTING ACTIVITIES	1,674,051	(662,353)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from repurchase agreements	12,861,900	7,517,156
Principal payments on repurchase agreements	(14,641,897)	(6,931,062)
Cash dividends	(31,010)	(16,030)
Proceeds From Issuance Of Common Stock, net of issuance costs	0	96,908
Payments For Repurchase Of Common Stock	214	297
NET CASH PROVIDED BY FINANCING ACTIVITIES	(1,811,221)	666,675
NET INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(22,997)	29,085
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, beginning of period	450,442	299,506
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, end of period	427,445	328,591
Cash paid during the period for:
Interest Paid	2,425	2,176
Other Noncash Investing And Financing Items Abstract
Securities Acquisitions Settled In Later Period	0	217,758
Securities Sold Settled In Later Period	$ 0	$ 154,977