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Bank credit lines, loan facilities and notes - Schedule of Principal Payments on Debt Instruments (Details) - Senior Secured Term Loan - Senior Secured Term Loan - USD ($) $ in Thousands | 3 Months Ended
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Jun. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023
Debt Instrument [Line Items] |  |  |  |  |  |
Periodic principal payment | $ 2,014,882 | $ 275,000 | $ 250,000 | $ 300,000 | $ 150,000 | $ 250,000
Annual principal payment | $ 2,289,882 |  | $ 950,000 |  |  |

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