Financial Derivatives (TBAs) (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Derivative [Line Items]
Financial derivatives–assets, at fair value-	$ 198,023	$ 132,518
Derivative Liability	38,520	54,198
Derivative Assets (Liabilities), at Fair Value, Net	159,503	78,320
TBA securities
Derivative [Line Items]
Notional Amount	296,489	528,441
Derivative, Cost Basis	(261,216)	(494,953)
Market Value Underlying	(255,073)	(488,975)
Derivative Assets (Liabilities), at Fair Value, Net	6,143	5,978
TBA securities | Short
Derivative [Line Items]
Notional Amount	342,591	691,568
Derivative, Cost Basis	(305,607)	(652,049)
Market Value Underlying	(298,783)	(644,064)
Derivative Assets (Liabilities), at Fair Value, Net	6,824	7,985
Financial Derivatives - Assets | TBA securities | Short
Derivative [Line Items]
Notional Amount	341,311	691,568
Derivative, Cost Basis	(304,426)	(652,049)
Market Value Underlying	(297,600)	(644,064)
Financial derivatives–assets, at fair value-	6,826	7,985
Financial Derivatives - Liabilities | TBA securities | Long
Derivative [Line Items]
Notional Amount	46,102	163,127
Derivative, Cost Basis	44,391	157,096
Market Value Underlying	43,710	155,089
Derivative Liability	(681)	(2,007)
Financial Derivatives - Liabilities | TBA securities | Short
Derivative [Line Items]
Notional Amount	1,280	0
Derivative, Cost Basis	(1,181)	0
Market Value Underlying	(1,183)	0
Derivative Liability	$ (2)	$ 0