Revenue Recognition - Deferred Revenue and Customer Deposits Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Customer Contracts Liability, Current
Beginning balance	$ 21,274	$ 14,432
Deferred revenue and customer deposits	31,907	19,014
Recognition of revenue deferred in prior period	(17,403)	(12,443)
Foreign exchange rate changes	(35)	271
End balance	$ 35,743	$ 21,274