Summary of Significant Accounting Policies - The Balances in the Company's Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ 237,258	$ 201,981	$ 209,325	$ 189,100
Total other comprehensive income	(2,376)	(874)	(2,985)	7
Ending balance	244,977	205,525	244,977	205,525
Foreign Currency [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(14,544)	(13,093)	(13,935)	(13,974)
Other comprehensive income (loss) before reclassifications	(2,376)	(874)	(2,985)	7
Total other comprehensive income	(2,376)	(874)	(2,985)	7
Ending balance	(16,920)	(13,967)	(16,920)	(13,967)
Defined Benefit Pension Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(1,466)	(1,799)	(1,466)	(1,799)
Other comprehensive income (loss) before reclassifications	0	0	0	0
Total other comprehensive income	0	0	0	0
Ending balance	(1,466)	(1,799)	(1,466)	(1,799)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(16,010)	(14,892)	(15,401)	(15,773)
Other comprehensive income (loss) before reclassifications	(2,376)	(874)	(2,985)	7
Total other comprehensive income	(2,376)	(874)	(2,985)	7
Ending balance	$ (18,386)	$ (15,766)	$ (18,386)	$ (15,766)