Financial Derivatives (TBAs) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Derivative [Line Items]
Financial derivatives–assets, at fair value-	$ 65,082	$ 18,894
Derivative Liability	16,528	12,298
Derivative Assets (Liabilities), at Fair Value, Net	48,554	6,596
TBA securities
Derivative [Line Items]
Notional Amount	611,011	640,159
Derivative, Cost Basis	(609,075)	(679,526)
Market Value Underlying	(604,930)	(679,206)
Derivative Assets (Liabilities), at Fair Value, Net	4,145	320
TBA securities | Long
Derivative [Line Items]
Notional Amount	0	273,223
Derivative, Cost Basis	0	272,587
Market Value Underlying	0	272,974
Derivative Assets (Liabilities), at Fair Value, Net	0	387
TBA securities | Short
Derivative [Line Items]
Notional Amount	611,011	913,382
Derivative, Cost Basis	(609,075)	(952,113)
Market Value Underlying	(604,930)	(952,180)
Derivative Assets (Liabilities), at Fair Value, Net	4,145	(67)
Financial Derivatives - Assets | TBA securities | Long
Derivative [Line Items]
Notional Amount	0	196,723
Derivative, Cost Basis	0	196,119
Market Value Underlying	0	196,641
Financial derivatives–assets, at fair value-	0	522
Financial Derivatives - Assets | TBA securities | Short
Derivative [Line Items]
Notional Amount	507,749	416,168
Derivative, Cost Basis	(511,208)	(439,438)
Market Value Underlying	(506,126)	(438,731)
Financial derivatives–assets, at fair value-	5,082	707
Financial Derivatives - Liabilities | TBA securities | Long
Derivative [Line Items]
Notional Amount	0	(76,500)
Derivative, Cost Basis	0	76,468
Market Value Underlying	0	76,333
Derivative Liability	0	(135)
Financial Derivatives - Liabilities | TBA securities | Short
Derivative [Line Items]
Notional Amount	103,262	497,214
Derivative, Cost Basis	(97,867)	(512,675)
Market Value Underlying	(98,804)	(513,449)
Derivative Liability	$ (937)	$ (774)