Income Taxes - Unrecognized Tax Liability (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of year	$ 3,262	$ 2,872
Additions to:
Positions taken during the current year	238	782
Positions taken during a prior year	3	3
Exchange rate impact	0	52
Deductions due to:
Positions taken during a prior year	(76)	(167)
Lapse of statute of limitations	(212)	(280)
Balance at end of year	3,149	3,262
Tax Credit Carryforward [Line Items]
Exchange rate impact	$ (66)	$ 0