Other accrued expenses (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Other accrued expenses
Royalties	$ 734	$ 1,250
Professional and outside services	1,219	2,126
Tax liabilities	787	430
Other	3,211	2,680
Total accrued expenses	$ 5,951	$ 6,486