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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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