Segment and geographic information - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) segment	Dec. 31, 2020 USD ($) segment	Dec. 31, 2019 USD ($) segment
Segment Reporting [Abstract]
Number of operating segments | segment	2	2	2
Number of reportable segments | segment	2	2	2
Segment Reporting Information [Line Items]
Segment cost of revenue	$ 236,024	$ 209,253	$ 143,510
Gross profit	279,633	220,646	132,817
Operating Segments
Segment Reporting Information [Line Items]
Segment cost of revenue	223,326	201,323	137,575
Gross profit	292,331	228,576	138,752
Operating Segments | Consumer
Segment Reporting Information [Line Items]
Segment cost of revenue	159,342	165,804	118,669
Gross profit	169,361	160,650	106,831
Operating Segments | Enterprise
Segment Reporting Information [Line Items]
Segment cost of revenue	63,984	35,519	18,906
Gross profit	$ 122,970	67,926	31,921
Operating Segments | Revision of Prior Period, Error Correction, Adjustment | Consumer
Segment Reporting Information [Line Items]
Segment cost of revenue		(6,700)	(4,100)
Gross profit		6,700	4,100
Operating Segments | Revision of Prior Period, Error Correction, Adjustment | Enterprise
Segment Reporting Information [Line Items]
Segment cost of revenue		6,700	4,100
Gross profit		$ (6,700)	$ (4,100)