Investment in Securities (Proceeds, Realized Gains (Losses) on Sales) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Securities, Available-for-sale [Line Items]
Available-for-sale securities Realizes Losses - adjustments to cost basis of certain securities	$ (6,200)	$ (3,900)	$ (9,500)	$ (6,400)
Agency RMBS
Securities, Available-for-sale [Line Items]
Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale	582	3,910	7,457	41,853
Debt Securities, Available-for-Sale, Realized Gain	60	27	700	454
Debt Securities, Available-for-Sale, Realized Loss	0	(450)	(1)	(2,067)
Debt Securities, Available-for-Sale, Realized Gain (Loss)	60	(423)	699	(1,613)
Non-Agency RMBS and CMBS
Securities, Available-for-sale [Line Items]
Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale	40,244	23,858	87,988	45,089
Debt Securities, Available-for-Sale, Realized Gain	4,446	3,564	7,722	7,374
Debt Securities, Available-for-Sale, Realized Loss	(129)	(122)	(164)	(99)
Debt Securities, Available-for-Sale, Realized Gain (Loss)	4,317	3,442	7,558	7,275
CLOs
Securities, Available-for-sale [Line Items]
Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale	13,034	60	46,162	29,955
Debt Securities, Available-for-Sale, Realized Gain	217	63	489	756
Debt Securities, Available-for-Sale, Realized Loss	(46)	0	(579)	(1,118)
Debt Securities, Available-for-Sale, Realized Gain (Loss)	171	63	(90)	(362)
Other Securities
Securities, Available-for-sale [Line Items]
Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale	45,460	428,325	241,109	451,507
Debt Securities, Available-for-Sale, Realized Gain	3,488	3,791	4,712	6,343
Debt Securities, Available-for-Sale, Realized Loss	(321)	(6,240)	(1,056)	(8,562)
Debt Securities, Available-for-Sale, Realized Gain (Loss)	3,167	(2,449)	3,656	(2,219)
Securities Investment [Member]
Securities, Available-for-sale [Line Items]
Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale	99,320	456,153	382,716	568,404
Debt Securities, Available-for-Sale, Realized Gain	8,211	7,445	13,623	14,927
Debt Securities, Available-for-Sale, Realized Loss	(496)	(6,812)	(1,800)	(11,846)
Debt Securities, Available-for-Sale, Realized Gain (Loss)	$ 7,715	$ 633	$ 11,823	$ 3,081

Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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