Stockholders' Equity - Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Accumulated Other Comprehensive Loss
Beginning balance	$ (42,995)	$ (44,384)	$ (43,430)	$ (44,304)
Other comprehensive income (loss)	1,158	14	1,593	(66)
Total before tax	(41,837)	(44,370)	(41,837)	(44,370)
Tax effect	0	0
Ending balance	(41,837)	(44,370)	(41,837)	(44,370)
Reclassifications out of accumulated other comprehensive loss	0	0	0	0
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Loss
Beginning balance	(42,856)	(44,245)	(43,291)	(44,165)
Other comprehensive income (loss)	1,158	14	1,593	(66)
Total before tax	(41,698)	(44,231)	(41,698)	(44,231)
Tax effect	0	0
Ending balance	(41,698)	(44,231)	(41,698)	(44,231)
Unrealized Losses
Accumulated Other Comprehensive Loss
Beginning balance	(139)	(139)	(139)	(139)
Total before tax	(139)	(139)	(139)	(139)
Tax effect	0	0
Ending balance	$ (139)	$ (139)	$ (139)	$ (139)