Leases - Components of Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Lease cost
Operating lease cost	$ 5,009	$ 2,295	$ 1,120
Short-term lease cost	364	227	64
Variable lease cost	1,152	748	794
Total lease cost	$ 6,525	$ 3,270	$ 1,978