Basis of presentation and description of business - Segment and geographic information (Details) $ in Thousands	12 Months Ended
Dec. 31, 2021 USD ($) segment	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Disaggregation of Revenue [Line Items]
Number of operating segment \| segment	1
Number of reportable segment \| segment	1
Total revenue	$ 366,388	$ 269,132	$ 203,965
Long-Lived Assets	39,645	15,130
The Americas
Disaggregation of Revenue [Line Items]
Total revenue	271,047	208,171	156,001
Long-Lived Assets	30,459	11,227
Europe, the Middle East, India, and Africa
Disaggregation of Revenue [Line Items]
Total revenue	71,521	45,775	36,431
Long-Lived Assets	6,839	2,310
Asia Pacific
Disaggregation of Revenue [Line Items]
Total revenue	23,820	15,186	$ 11,533
Long-Lived Assets	$ 2,347	$ 1,593
U.S. \| Property, Plant and Equipment \| Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration risk percentage	77.00%	74.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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