Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning of year balance	$ 3,232	$ 2,777	$ 2,028
Increases to tax positions expected to be taken	2,708	0	732
Increases to tax positions taken during prior years	288	427	24
Foreign currency translation		28
Foreign currency translation	(50)		(7)
End of year balance	$ 6,178	$ 3,232	$ 2,777