Summary of Significant Accounting Policies - The Balances in the Company's Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ 265,247	$ 224,138	$ 256,427	$ 209,325
Total other comprehensive income (loss)	765	(1,179)	807	(609)
Ending balance	274,422	237,258	274,422	237,258
Foreign Currency [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(16,368)	(13,365)	(16,410)	(13,935)
Other comprehensive income (loss) before reclassifications	765	(1,179)	807	(609)
Total other comprehensive income (loss)	765	(1,179)	807	(609)
Ending balance	(15,603)	(14,544)	(15,603)	(14,544)
Defined Benefit Pension Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(1,383)	(1,466)	(1,383)	(1,466)
Other comprehensive income (loss) before reclassifications	0	0	0	0
Total other comprehensive income (loss)	0	0	0	0
Ending balance	(1,383)	(1,466)	(1,383)	(1,466)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(17,751)	(14,831)	(17,793)	(15,401)
Other comprehensive income (loss) before reclassifications	765	(1,179)	807	(609)
Total other comprehensive income (loss)	765	(1,179)	807	(609)
Ending balance	$ (16,986)	$ (16,010)	$ (16,986)	$ (16,010)