Financial Derivatives (Schedule of Financial Derivatives) (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Derivatives, Fair Value [Line Items]
Financial derivatives–assets, at fair value	$ 174,889	$ 142,723
Financial derivatives–liabilities, at fair value-	(80,793)	(53,073)
Total	94,096	89,650
TBA Securities, Purchase Contracts [Member]
Derivatives, Fair Value [Line Items]
Financial derivatives–assets, at fair value	486	87
Financial derivatives–liabilities, at fair value-	(9)	(54)
TBA Securities, Sale Contracts [Member]
Derivatives, Fair Value [Line Items]
Financial derivatives–assets, at fair value	13	170
Financial derivatives–liabilities, at fair value-	(2,257)	(544)
Interest rate swaps \| Short
Derivatives, Fair Value [Line Items]
Financial derivatives–assets, at fair value	131,284	76,670
Financial derivatives–liabilities, at fair value-	(3,540)	(13,411)
Interest rate swaps \| Long
Derivatives, Fair Value [Line Items]
Financial derivatives–assets, at fair value	22,445	52,228
Financial derivatives–liabilities, at fair value-	(39,526)	(13,386)
Credit default swaps on asset-backed indices
Derivatives, Fair Value [Line Items]
Financial derivatives–assets, at fair value	1,127	2,206
Credit default swaps on corporate bonds
Derivatives, Fair Value [Line Items]
Financial derivatives–liabilities, at fair value-	(111)	(155)
Credit default swaps on corporate bond indices
Derivatives, Fair Value [Line Items]
Financial derivatives–assets, at fair value	15,951	4,621
Financial derivatives–liabilities, at fair value-	(32,305)	(25,407)
Total return swaps
Derivatives, Fair Value [Line Items]
Financial derivatives–assets, at fair value	63	24
Futures
Derivatives, Fair Value [Line Items]
Financial derivatives–assets, at fair value	0	1,095
Financial derivatives–liabilities, at fair value-	(680)	(45)
Futures \| Short
Derivatives, Fair Value [Line Items]
Total	(680)	1,050
Forwards
Derivatives, Fair Value [Line Items]
Financial derivatives–assets, at fair value	280	14
Financial derivatives–liabilities, at fair value-	0	69
Warrants
Derivatives, Fair Value [Line Items]
Financial derivatives–assets, at fair value	3	1
Options
Derivatives, Fair Value [Line Items]
Financial derivatives–assets, at fair value	3,237	5,607
Credit Default Swap, Asset Backed Securities
Derivatives, Fair Value [Line Items]
Financial derivatives–liabilities, at fair value-	(2)	(2)
Exchange Traded Options
Derivatives, Fair Value [Line Items]
Financial derivatives–liabilities, at fair value-	$ (2,363)	$ 0