Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Revenue	$ 45,311	$ 33,729
Total subscription revenue
Disaggregation of Revenue [Line Items]
Revenue	36,613	24,145
Total subscription term-based licenses
Disaggregation of Revenue [Line Items]
Revenue	21,947	11,620
Multi-year subscription term-based licenses
Disaggregation of Revenue [Line Items]
Revenue	13,379	6,636
1-year subscription term-based licenses
Disaggregation of Revenue [Line Items]
Revenue	8,568	4,984
Subscription SaaS
Disaggregation of Revenue [Line Items]
Revenue	10,526	9,173
Support and maintenance
Disaggregation of Revenue [Line Items]
Revenue	4,140	3,352
Perpetual licenses
Disaggregation of Revenue [Line Items]
Revenue	2,055	2,770
Services and other
Disaggregation of Revenue [Line Items]
Revenue	$ 6,643	$ 6,814