Leases - Supplemental cash flow information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Leases
Operating cash flows from operating leases	$ 36,629	$ 29,216	$ 37,239
Operating cash flows from finance leases	427	482	522
Financing cash flows from finance leases	852	759	689
Right-of-use assets obtained in exchange for new lease obligations - Operating leases	$ 13,506	$ 24,078	$ 41,615