Interest Income and Other (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Interest income and other
Interest income	$ 3,493	$ 3,735	$ 4,761
Foreign exchange transaction gains (losses), net	2,426	(4,099)	(3,056)
Other	274	(48)	356
Total	$ 6,193	$ (412)	$ 2,061