Fair value of financial instruments - Schedule of Financial Liabilities Not Measured at Fair Value (Details) - Term Loan Due 2029 - Medium-term Notes - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Carrying Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term Loan due 2029	$ 1,057,768	$ 1,059,796
Fair Value | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term Loan due 2029	0	0
Fair Value | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term Loan due 2029	0	0
Fair Value | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Term Loan due 2029	$ 1,116,162	$ 1,114,860