Income Taxes - Components of Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current:
US federal	$ 3,480	$ (249)	$ 1,378
US state	250	(406)	909
Non US	13,219	10,681	12,861
Current income tax provision	16,949	10,026	15,148
Deferred:
US federal	(4,802)	(1,220)	(3,781)
US state	(1,288)	(657)	(3,107)
Non US	(4,275)	(2,819)	(8,040)
Deferred income tax provision	(10,365)	(4,696)	(14,928)
Total provision for income taxes	$ 6,584	$ 5,330	$ 220