Derivative Instruments, Information of TBA Derivatives (Details) - Notional Amount of TBAs, Net [Member] - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
TBA Derivatives [Abstract]
Notional	$ 166,600	$ 439,000
Implied Cost Basis	173,817	443,827
Implied Fair Value	166,449	442,819
Net Carrying Value	(7,368)	(1,007)
Purchase Contracts [Member]
TBA Derivatives [Abstract]
Notional	1,075,500	970,500
Implied Cost Basis	1,069,521	988,173
Implied Fair Value	1,053,940	987,146
Net Carrying Value	(15,581)	(1,026)
Sale Contracts [Member]
TBA Derivatives [Abstract]
Notional	908,900	531,500
Implied Cost Basis	(895,704)	(544,346)
Implied Fair Value	(887,491)	(544,327)
Net Carrying Value	$ 8,213	$ 19