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Long-term debt - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Debt Instrument [Line Items]
Interest expense	$ 3,600	$ 3,400
Amortization of deferred debt issuance costs	191	199
Accrued interest	3,600		$ 3,700
Revolving Credit Facility
Debt Instrument [Line Items]
Interest expense	200	$ 100
Available credit under agreement	$ 45,000
Commitment fee percentage	0.38%
Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Commitment fee percentage	0.25%
Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Commitment fee percentage	0.50%
2021 Credit Facilities
Debt Instrument [Line Items]
Debt instrument, mandatory prepayment, principal	$ 3,000
2021 Credit Facilities | Term loan
Debt Instrument [Line Items]
Quarterly amortization rate	7.93%

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