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Derivative Instruments Schedule of Gains and Losses on Derivative Instruments (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024 | Dec. 31, 2023
Derivative [Line Items] |  |  |  |
Net realized gains (losses) on periodic settements of interest rate swaps | $ 8,060 | $ 5,812 | $ 27,118 | $ 7,388
Net realized gains (losses) other than on periodic settements of interest rate swaps | 9,534 | (2,353) | 11,369 | 21,174
Net realized gains (losses) on financial derivatives | 17,594 | 3,459 | 38,487 | 28,562
Change in net unrealized gains (losses) on accrued periodic settlements on interest rate swaps | (6,340) | (111) | (8,013) | 13,690
Change in Net Unrealized Gains (Losses) Other Than on Accrued Periodic Settlements of Interest Rate Swaps | (19,174) | 10,327 | (10,566) | (32,622)
Change in net unrealized gains (losses) on financial derivatives | (25,514) | 10,216 | (18,579) | (18,932)
Interest Rate Swap [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Net realized gains (losses) on periodic settements of interest rate swaps | 8,060 | 5,812 | 27,118 | 7,388
Net realized gains (losses) other than on periodic settements of interest rate swaps | 20,268 | (1,167) | 15,387 | 12,176
Net realized gains (losses) on financial derivatives | 28,328 | 4,645 | 42,505 | 19,564
Change in net unrealized gains (losses) on accrued periodic settlements on interest rate swaps | (6,340) | (111) | (8,013) | 13,690
Change in Net Unrealized Gains (Losses) Other Than on Accrued Periodic Settlements of Interest Rate Swaps | (20,658) | 11,111 | (8,321) | (30,612)
Change in net unrealized gains (losses) on financial derivatives | (26,998) | 11,000 | (16,334) | (16,922)
TBA securities [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Net realized gains (losses) other than on periodic settements of interest rate swaps | (9,536) | (707) | (2,263) | 12,385
Net realized gains (losses) on financial derivatives | (9,536) | (707) | (2,263) | 12,385
Change in Net Unrealized Gains (Losses) Other Than on Accrued Periodic Settlements of Interest Rate Swaps | 627 | 1,148 | 451 | (4,126)
Change in net unrealized gains (losses) on financial derivatives | 627 | 1,148 | 451 | (4,126)
Futures [Member] |  |  |  |
Derivative [Line Items] |  |  |  |
Net realized gains (losses) other than on periodic settements of interest rate swaps | (834) | (174) | (1,318) | (3,149)
Net realized gains (losses) on financial derivatives | (834) | (174) | (1,318) | (3,149)
Change in Net Unrealized Gains (Losses) Other Than on Accrued Periodic Settlements of Interest Rate Swaps | 798 | (2,018) | (2,862) | 2,303
Change in net unrealized gains (losses) on financial derivatives | 798 | (2,018) | (2,862) | 2,303
Credit Default Swap |  |  |  |
Derivative [Line Items] |  |  |  |
Net realized gains (losses) other than on periodic settements of interest rate swaps | (18) | (305) | (773) | (238)
Net realized gains (losses) on financial derivatives | (18) | (305) | (773) | (238)
Change in Net Unrealized Gains (Losses) Other Than on Accrued Periodic Settlements of Interest Rate Swaps | 143 | 86 | 83 | (187)
Change in net unrealized gains (losses) on financial derivatives | 143 | $ 86 | 83 | $ (187)
Forward Contracts |  |  |  |
Derivative [Line Items] |  |  |  |
Net realized gains (losses) other than on periodic settements of interest rate swaps | (346) |  | 336 |
Net realized gains (losses) on financial derivatives | (346) |  | 336 |
Change in Net Unrealized Gains (Losses) Other Than on Accrued Periodic Settlements of Interest Rate Swaps | (84) |  | 83 |
Change in net unrealized gains (losses) on financial derivatives | $ (84) |  | $ 83 |

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