Accrued expenses and other current liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Accrued expenses and other current liabilities
Accrued payroll and compensation	$ 2,002	$ 2,225
Current portion of contingent consideration	2,740	1,590
Accrued inventory purchases	1,073	478
Other accrued expenses	3,336	2,722
Total accrued expenses and other current liabilities	$ 9,151	$ 7,015