Accounts Receivable - Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at the beginning of the period	$ (1,607)	$ (1,219)
Increase in the allowance for doubtful accounts	0	(350)
Effect of change in foreign currency exchange rates	(2)	(38)
Balance at the end of the period	$ (1,609)	$ (1,607)