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Other assets and liabilities - Summary of gains/(losses) related to derivatives and other instruments (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Derivative Instruments, Gain (Loss) [Line Items] |  |
Included within Net interest component of interest rate swaps | $ (3,447) | $ (7,617)
Included within Net unrealized gain/(loss) | (6,249) | 10,742
Included within Net realized gain/(loss) | (6,849) | (20,881)
Total income/(loss) | (9,651) | (2,522)
Interest Rate Swaps |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Included within Net interest component of interest rate swaps | 3,447 | 7,617
Included within Net unrealized gain/(loss) | (6,381) | 11,977
Included within Net realized gain/(loss) | (4,098) | (22,265)
Short TBAs | Short |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Included within Net unrealized gain/(loss) | 0 | 63
Included within Net realized gain/(loss) | (2,720) | 24
Forward Purchase Commitments |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Included within Net unrealized gain/(loss) | 132 | (1,298)
Included within Net realized gain/(loss) | $ (31) | $ 1,360

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