Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Total revenue	$ 62,769	$ 21,507	$ 140,852	$ 53,703
Core services revenue
Disaggregation of Revenue [Line Items]
Total revenue	32,955	17,265	72,664	38,102
Managed services revenue
Disaggregation of Revenue [Line Items]
Total revenue	14,248	1,911	28,561	9,744
Software and service subscription revenue
Disaggregation of Revenue [Line Items]
Total revenue	$ 15,566	$ 2,331	$ 39,627	$ 5,857