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Other income - Schedule of other income (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Schedule of other income [Line Items] |  |  |  |
Interest and other income | $ 31,394 | $ 21,657 | $ 63,072 | $ 58,650
Proceeds from unsecured claims | 1,329 | 39,352 | 2,913 | 39,352
Other income (loss) | 41,090 | 71,188 | 83,467 | 118,378
Management fees |  |  |  |
Schedule of other income [Line Items] |  |  |  |
Management fees | $ 8,367 | $ 10,179 | $ 17,482 | $ 20,376

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