Financial Derivatives (Schedule of Financial Derivatives) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Oct. 03, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Financial derivatives–assets, at fair value-	$ 132,518	$ 7,121	$ 18,894
Financial derivatives–liabilities, at fair value-	(54,198)		(12,298)
Total	78,320		6,596
TBA Securities, Purchase Contracts [Member]
Derivatives, Fair Value [Line Items]
Financial derivatives–assets, at fair value-	0		522
Financial derivatives–liabilities, at fair value-	(2,007)		(135)
TBA Securities, Sale Contracts [Member]
Derivatives, Fair Value [Line Items]
Financial derivatives–assets, at fair value-	7,985		707
Financial derivatives–liabilities, at fair value-	0		(774)
Interest rate swaps | Short
Derivatives, Fair Value [Line Items]
Financial derivatives–assets, at fair value-	116,768		11,871
Financial derivatives–liabilities, at fair value-	(1,408)		(6,567)
Interest rate swaps | Long
Derivatives, Fair Value [Line Items]
Financial derivatives–assets, at fair value-	254		2,122
Financial derivatives–liabilities, at fair value-	(48,882)		(2,531)
Credit default swaps on asset-backed securities
Derivatives, Fair Value [Line Items]
Financial derivatives–assets, at fair value-	76		303
Credit default swaps on asset-backed indices
Derivatives, Fair Value [Line Items]
Financial derivatives–assets, at fair value-	3,366		1,751
Financial derivatives–liabilities, at fair value-	(33)		(39)
Credit default swaps on corporate bonds
Derivatives, Fair Value [Line Items]
Financial derivatives–liabilities, at fair value-	(259)		(99)
Credit default swaps on corporate bond indices
Derivatives, Fair Value [Line Items]
Financial derivatives–assets, at fair value-	83		156
Financial derivatives–liabilities, at fair value-	(1,513)		(1,870)
Futures
Derivatives, Fair Value [Line Items]
Financial derivatives–assets, at fair value-	2,772		478
Financial derivatives–liabilities, at fair value-	(96)		(75)
Futures | Short
Derivatives, Fair Value [Line Items]
Total	2,676		403
Forwards
Derivatives, Fair Value [Line Items]
Financial derivatives–assets, at fair value-	77		0
Financial derivatives–liabilities, at fair value-	0		(208)
Warrants
Derivatives, Fair Value [Line Items]
Financial derivatives–assets, at fair value-	1,137		706
Put Option [Member]
Derivatives, Fair Value [Line Items]
Financial derivatives–assets, at fair value-	$ 0		$ 278