Accrued expenses and other current liabilities - Schedule of warranty accruals (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accrued Expenses and Other Current Liabilities Abstract
Balance at beginning of period	$ 12,426	$ 9,346	$ 6,811
Warranties issued and remediation added during the period	4,310	8,228	8,588
Settlements made during the period	(4,254)	(4,041)	(5,270)
Changes in liability for pre-existing warranties	(1,480)	(1,107)	(783)
Balance at end of period	11,002	12,426	9,346
Warranty accruals are reported in:
Other current liabilities	7,279	8,004	4,032
Other non-current liabilities	3,723	4,422	5,314
Balance at end of period	$ 11,002	$ 12,426	$ 9,346