Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Cash Flows From Operating Activities:
Net Income (Loss)	$ (144,315,000)	$ 33,982,000	$ (269,340,000)	$ 36,135,000
Adjustments to reconcile net income (loss) to net cash and cash collateral posted to counterparties provided by operating activities:
Net amortization of premium on Agency Securities			16,814,000	38,434,000
Realized (gain) loss on sale of Agency Securities, available for sale	0	(3,724,000)	7,501,000	(11,078,000)
Credit loss expense	4,183,000	0	4,183,000	0
Stock based compensation			2,858,000	3,641,000
Changes in operating assets and liabilities:
(Increase) decrease in accrued interest receivable			(19,344,000)	2,794,000
(Increase) decrease in prepaid and other assets			(1,999,000)	403,000
Change in derivatives, at fair value			(892,212,000)	(102,151,000)
Increase (decrease) in accrued interest payable- repurchase agreements			19,266,000	(1,091,000)
Increase in accounts payable and other accrued expenses			4,125,000	2,311,000
Net cash and cash collateral posted to counterparties provided by operating activities			16,667,000	24,384,000
Cash Flows From Investing Activities:
Purchases of Agency Securities			(9,304,581,000)	(672,816,000)
Principal repayments of Agency Securities			451,849,000	690,933,000
Proceeds from sales of Agency Securities			3,390,725,000	901,053,000
Disbursements on reverse repurchase agreements			0	(391,125,000)
Receipts from reverse repurchase agreements			0	391,125,000
Increase in cash collateral posted by counterparties			829,347,000	110,009,000
Net cash and cash collateral posted to counterparties provided by (used in) investing activities			(4,559,580,000)	825,077,000
Cash Flows From Financing Activities:
Issuance of common stock, net of expenses			301,384,000	261,296,000
Proceeds from repurchase agreements			56,729,350,000	23,233,849,000
Principal repayments on repurchase agreements			(52,427,321,000)	(24,319,475,000)
Series C Preferred stock dividends paid			(8,986,000)	(8,477,000)
Common stock dividends paid			(98,410,000)	(68,715,000)
Common stock repurchased			(1,544,000)	0
Net cash and cash collateral posted to counterparties provided by (used in) financing activities			4,494,473,000	(864,937,000)
Net decrease in cash and cash collateral posted to counterparties			(48,440,000)	(15,476,000)
Cash and cash collateral posted to counterparties - beginning of period			356,216,000	171,668,000	$ 171,668,000
Cash and cash collateral posted to counterparties - end of period	307,776,000	156,192,000	307,776,000	156,192,000	$ 356,216,000
Supplemental Disclosure:
Cash paid during the period for interest			65,444,000	13,406,000
Non-Cash Investing Activities:
Receivable for unsettled sales			1,091,891,000	82,100,000
Payable for unsettled purchases			(682,605,000)	(210,646,000)
Net unrealized loss on available for sale Agency Securities			(133,272,000)	(43,999,000)
Non-Cash Financing Activities
Amounts payable for common stock repurchased			(3,866,000)	0
Series C Preferred Stock
Cash Flows From Financing Activities:
Issuance of Series C Preferred stock, net of expenses			0	36,585,000
Series C Preferred stock dividends paid			(8,986,500)
Agency Securities
Adjustments to reconcile net income (loss) to net cash and cash collateral posted to counterparties provided by operating activities:
Realized (gain) loss on sale of Agency Securities, available for sale		(3,724,000)	7,501,000	(11,078,000)
Loss on securities	514,483,000	2,387,000	1,017,894,000	45,790,000
U.S. Treasury Securities
Adjustments to reconcile net income (loss) to net cash and cash collateral posted to counterparties provided by operating activities:
Net accretion of U.S. Treasury Securities			(1,400,000)	(2,000)
Loss on securities	$ 15,951,000	$ 9,170,000	128,321,000	9,198,000
Cash Flows From Investing Activities:
Purchases of U.S. Treasury Securities			(3,992,820,000)	(788,919,000)
Proceeds from sales of U.S. Treasury Securities			$ 4,065,900,000	$ 584,817,000