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, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ 274,422	$ 237,258	$ 256,427	$ 209,325
Total other comprehensive income (loss)	(948)	(2,376)	(141)	(2,985)
Ending balance	282,221	244,977	282,221	244,977
Foreign Currency [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(15,603)	(14,544)	(16,410)	(13,935)
Other comprehensive income (loss) before reclassifications	(948)	(2,376)	(141)	(2,985)
Total other comprehensive income (loss)	(948)	(2,376)	(141)	(2,985)
Ending balance	(16,551)	(16,920)	(16,551)	(16,920)
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	(16,986)	(16,010)	(17,793)	(15,401)
Other comprehensive income (loss) before reclassifications	(948)	(2,376)	(141)	(2,985)
Total other comprehensive income (loss)	(948)	(2,376)	(141)	(2,985)
Ending balance	$ (17,934)	$ (18,386)	$ (17,934)	$ (18,386)