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Long-term debt - Additional Required Disclosures (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
2029 Notes
Debt Instrument [Line Items]
Interest expense	$ 20,469	$ 20,511	$ 14,299
DFC amortization	469	527	342
Amortization of premium/discount, net	691	695	715
2027 Notes
Debt Instrument [Line Items]
Interest expense	22,282	22,218	25,538
DFC amortization	457	466	759
Amortization of premium/discount, net	$ 460	$ 478	$ 785

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Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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