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Valuation Unobservable Input Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024	Dec. 31, 2023
Transfers
Financial derivatives–assets, at fair value	$ 476		$ 41,867	$ 74,279
Financial derivatives–liabilities, at fair value	(957)		(5,681)	(7,329)
Fair Value, Recurring [Member]
Transfers
Assets, Fair Value Disclosure	754,717		725,782	847,827
Financial derivatives–assets, at fair value	476		41,867	74,279
Securities, at fair value	754,241		683,915	773,548
Financial derivatives–liabilities, at fair value			(5,681)
Total financial derivatives-liabilities, at fair value	(957)		(28,259)	(7,329)
Fair Value, Recurring [Member] | Credit Default Swap
Transfers
Financial derivatives–assets, at fair value	0		705
Financial derivatives–liabilities, at fair value	(488)		(1,912)	(632)
Fair Value, Recurring [Member] | Forward Contracts
Transfers
Financial derivatives–assets, at fair value	0		83
Collateralized Loan Obligations | Fair Value, Recurring [Member]
Transfers
Securities, at fair value	249,857		171,122	17,417
Corporate Debt Securities | Fair Value, Recurring [Member]
Transfers
Securities, at fair value	434		428
Equity Securities | Fair Value, Recurring [Member]
Transfers
Securities, at fair value	56		56
Non-Agency RMBS | Fair Value, Recurring [Member]
Transfers
Securities, at fair value				20,719
U.S. Treasury Securities | Fair Value, Recurring [Member]
Transfers
U.S. Treasury securities sold short, at fair value			(22,578)
Level 3 [Member]
Transfers
Transfers into level 3	16,200	$ 9,300	14,600	1,800
Transfers out of level 3	(10,000)	(7,900)	(44,300)	(900)
Level 3 [Member] | Fair Value, Recurring [Member]
Transfers
Assets, Fair Value Disclosure	133,915		104,110	19,039
Financial derivatives–assets, at fair value	0		0	0
Securities, at fair value	133,915		104,110	19,039
Financial derivatives–liabilities, at fair value			0
Total financial derivatives-liabilities, at fair value	0		0	0
Level 3 [Member] | Fair Value, Recurring [Member] | Credit Default Swap
Transfers
Financial derivatives–assets, at fair value	0		0
Financial derivatives–liabilities, at fair value	0		0	0
Level 3 [Member] | Fair Value, Recurring [Member] | Forward Contracts
Transfers
Financial derivatives–assets, at fair value	0		0
Level 3 [Member] | Collateralized Loan Obligations | Fair Value, Recurring [Member]
Transfers
Securities, at fair value	133,423		103,624	5,601
Level 3 [Member] | Corporate Debt Securities | Fair Value, Recurring [Member]
Transfers
Securities, at fair value	434		428
Level 3 [Member] | Equity Securities | Fair Value, Recurring [Member]
Transfers
Securities, at fair value	56		56
Level 3 [Member] | Non-Agency RMBS | Fair Value, Recurring [Member]
Transfers
Securities, at fair value				10,276
Level 3 [Member] | U.S. Treasury Securities | Fair Value, Recurring [Member]
Transfers
U.S. Treasury securities sold short, at fair value			0
Level 3 [Member] | Non-Agency RMBS
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	0	10,276	10,276	11,834
Purchases		0	0	4,141
Proceeds from sales		0	(10,898)	(5,058)
Fair Value, Measurements with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Principal Repayments		(13)		(226)
(Amortization)/accretion, net		(258)	(428)	(379)
Net realized gains (losses)		42	3,403	(228)
Change in net unrealized gains (losses)		491	(2,353)	799
Transfers
Transfers into level 3		1,811	0	0
Transfers out of level 3		6,521	0	607
Ending balance		5,828	0	10,276
Change in net unrealized gains (losses) for level 3 assets still held		400		400
Level 3 [Member] | Agency RMBS [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	2	3,162	3,162	4,085
Purchases	0	0	0	0
Proceeds from sales	0	(263)	(3,010)	(1,484)
Fair Value, Measurements with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Principal Repayments		0		(382)
(Amortization)/accretion, net	0	(180)	(437)	(653)
Net realized gains (losses)	0	20	727	(217)
Change in net unrealized gains (losses)	0	179	(440)	276
Transfers
Transfers into level 3	0	1,002	0	1,848
Transfers out of level 3	0	0	0	(311)
Ending balance	2	3,920	2	3,162
Change in net unrealized gains (losses) for level 3 assets still held		100		600
Level 3 [Member] | Collateralized Loan Obligations
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	103,624	5,601	5,601	0
Purchases	51,769	16,952	179,444	5,465
Proceeds from sales	(17,517)	0	(42,997)	0
Fair Value, Measurements with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Principal Repayments		(1,620)		0
(Amortization)/accretion, net	(1,464)	(34)	(3,045)	102
Net realized gains (losses)	(201)	34	1,145	0
Change in net unrealized gains (losses)	(8,988)	(379)	(6,767)	34
Transfers
Transfers into level 3	16,155	6,456	14,566	0
Transfers out of level 3	(9,955)	(1,414)	(44,323)	0
Ending balance	133,423	25,596	103,624	5,601
Change in net unrealized gains (losses) for level 3 assets still held	(9,500)	200	(6,000)	34
Assets, Fair Value Disclosure	$ 133,423
Level 3 [Member] | Collateralized Loan Obligations | Weighted Average [Member]
Transfers
Yield	16.30%
Level 3 [Member] | Collateralized Loan Obligations | Yields greater than 100%
Transfers
Assets, Fair Value Disclosure	$ 1,300
Level 3 [Member] | Collateralized Loan Obligations | Yields greater than 100% | Weighted Average [Member]
Transfers
Yield	18.10%
Level 3 [Member] | Equity Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	$ 56	0	0
Purchases	0		75
Proceeds from sales	0		0
(Amortization)/accretion, net	0		0
Net realized gains (losses)	0		0
Change in net unrealized gains (losses)	0		(19)
Transfers
Transfers into level 3	0		0
Transfers out of level 3	0		0
Ending balance	56		56	0
Change in net unrealized gains (losses) for level 3 assets still held	$ (1)		(19)
Level 3 [Member] | Equity Securities | Weighted Average [Member]
Transfers
Yield	20.20%
Level 3 [Member] | Corporate Debt Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	$ 428	$ 0	0
Purchases	12		400
Proceeds from sales	(13)		(5)
(Amortization)/accretion, net	0		0
Net realized gains (losses)	0		3
Change in net unrealized gains (losses)	7		30
Transfers
Transfers into level 3	0		0
Transfers out of level 3	0		0
Ending balance	434		428	0
Change in net unrealized gains (losses) for level 3 assets still held	$ 7		30
Level 3 [Member] | Corporate Debt Securities | Weighted Average [Member]
Transfers
Yield	16.60%
Level 1 [Member] | Fair Value, Recurring [Member]
Transfers
Assets, Fair Value Disclosure	$ 157		170	2,284
Financial derivatives–assets, at fair value	157		170	2,284
Securities, at fair value	0		0	0
Financial derivatives–liabilities, at fair value			(811)
Total financial derivatives-liabilities, at fair value	0		(811)	(63)
Level 1 [Member] | Fair Value, Recurring [Member] | Credit Default Swap
Transfers
Financial derivatives–assets, at fair value	0		0
Financial derivatives–liabilities, at fair value	0		0	0
Level 1 [Member] | Fair Value, Recurring [Member] | Forward Contracts
Transfers
Financial derivatives–assets, at fair value	0		0
Level 1 [Member] | Collateralized Loan Obligations | Fair Value, Recurring [Member]
Transfers
Securities, at fair value	0		0	0
Level 1 [Member] | Corporate Debt Securities | Fair Value, Recurring [Member]
Transfers
Securities, at fair value	0		0
Level 1 [Member] | Equity Securities | Fair Value, Recurring [Member]
Transfers
Securities, at fair value	0		0
Level 1 [Member] | Non-Agency RMBS | Fair Value, Recurring [Member]
Transfers
Securities, at fair value				0
Level 1 [Member] | U.S. Treasury Securities | Fair Value, Recurring [Member]
Transfers
U.S. Treasury securities sold short, at fair value			0
Level 2 [Member] | Fair Value, Recurring [Member]
Transfers
Assets, Fair Value Disclosure	620,645		621,502	826,504
Financial derivatives–assets, at fair value	319		41,697	71,995
Securities, at fair value	620,326		579,805	754,509
Financial derivatives–liabilities, at fair value			(4,870)
Total financial derivatives-liabilities, at fair value	(957)		(27,448)	(7,266)
Level 2 [Member] | Fair Value, Recurring [Member] | Credit Default Swap
Transfers
Financial derivatives–assets, at fair value	0		705
Financial derivatives–liabilities, at fair value	(488)		(1,912)	(632)
Level 2 [Member] | Fair Value, Recurring [Member] | Forward Contracts
Transfers
Financial derivatives–assets, at fair value	0		83
Level 2 [Member] | Collateralized Loan Obligations | Fair Value, Recurring [Member]
Transfers
Securities, at fair value	116,434		67,498	11,816
Level 2 [Member] | Corporate Debt Securities | Fair Value, Recurring [Member]
Transfers
Securities, at fair value	0		0
Level 2 [Member] | Equity Securities | Fair Value, Recurring [Member]
Transfers
Securities, at fair value	$ 0		0
Level 2 [Member] | Non-Agency RMBS | Fair Value, Recurring [Member]
Transfers
Securities, at fair value				$ 10,443
Level 2 [Member] | U.S. Treasury Securities | Fair Value, Recurring [Member]
Transfers
U.S. Treasury securities sold short, at fair value			$ (22,578)

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