Investment in Securities (Proceeds, Realized Gains (Losses) on Sales) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Securities, Available-for-sale [Line Items]
Available-for-sale securities Realizes Losses - adjustments to cost basis of certain securities	$ (3,200)	$ (2,500)
Agency RMBS
Securities, Available-for-sale [Line Items]
Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale	6,874	37,943
Debt Securities, Available-for-Sale, Realized Gain	642	428
Debt Securities, Available-for-Sale, Realized Loss	(3)	(1,618)
Debt Securities, Available-for-Sale, Realized Gain (Loss)	639	(1,190)
Non-Agency RMBS and CMBS
Securities, Available-for-sale [Line Items]
Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale	47,744	21,231
Debt Securities, Available-for-Sale, Realized Gain	3,396	3,981
Debt Securities, Available-for-Sale, Realized Loss	(155)	(148)
Debt Securities, Available-for-Sale, Realized Gain (Loss)	3,241	3,833
CLOs
Securities, Available-for-sale [Line Items]
Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale	33,129	29,894
Debt Securities, Available-for-Sale, Realized Gain	272	693
Debt Securities, Available-for-Sale, Realized Loss	(534)	(1,118)
Debt Securities, Available-for-Sale, Realized Gain (Loss)	(262)	(425)
Other Securities
Securities, Available-for-sale [Line Items]
Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale	195,649	185,913
Debt Securities, Available-for-Sale, Realized Gain	2,835	2,569
Debt Securities, Available-for-Sale, Realized Loss	(2,346)	(2,344)
Debt Securities, Available-for-Sale, Realized Gain (Loss)	489	225
Securities Investment [Member]
Securities, Available-for-sale [Line Items]
Proceeds from Sale and Maturity of Debt Securities, Available-for-Sale	283,396	274,981
Debt Securities, Available-for-Sale, Realized Gain	7,145	7,671
Debt Securities, Available-for-Sale, Realized Loss	(3,038)	(5,228)
Debt Securities, Available-for-Sale, Realized Gain (Loss)	$ 4,107	$ 2,443

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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