Revenues - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Sales	$ 82,110	$ 60,564	$ 158,441	$ 140,079
Americas
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Sales	33,702	25,777	66,251	61,367
EMEA
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Sales	26,474	16,720	51,928	40,410
APAC
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Sales	21,934	18,067	40,262	38,302
Product sales
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Sales	60,275	42,259	114,910	98,784
Product sales | Product transferred to customers at a point in time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Sales	56,674	39,209	107,544	92,764
Product sales | Product transferred to customers over time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Sales	3,601	3,050	7,366	6,020
Service sales
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Sales	21,835	18,305	43,531	41,295
Service sales | Product transferred to customers at a point in time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Sales	9,602	6,649	19,599	17,644
Service sales | Product transferred to customers over time
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Sales	$ 12,233	$ 11,656	$ 23,932	$ 23,651