Income Taxes - Narrative (Details) - USD ($)		12 Months Ended
	Dec. 22, 2017	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2017
Income Taxes [Line Items]
Corporate income tax rate	35.00%	21.00%
Effect Of Tax Cuts and Jobs Act [Abstract]
Tax Cuts and Jobs Act, Transition Tax for Accumulated Foreign Earnings Liability		$ 20,100,000				$ 80,500,000
Tax Cuts and Jobs Act, transition tax for accumulated foreign earnings liability current		20,100,000
Foreign earnings repatriated		55,000,000	$ 70,000,000	$ 20,000,000
Cumulative undistributed earnings of foreign subsidiaries		514,300,000
Unrecognized deferred tax liability		12,100,000
Net change in total deferred tax asset valuation allowance		8,200,000	(200,000)
Total tax incentives		$ 5,773,000	$ 6,261,000	$ 9,005,000
Net impact of tax incentives, per diluted share		$ 0.16	$ 0.17	$ 0.25
Unrecognized tax benefits		$ 7,286,000	$ 9,061,000	$ 9,061,000	$ 9,121,000
Decreases related to lapse of statutes		0	0	60,000
Interest on unrecognized tax		0
Research and experimentation		$ 18,580,000	15,861,000
Maximum [Member]
Effect Of Tax Cuts and Jobs Act [Abstract]
Net change in total deferred tax asset valuation allowance				100,000
Income tax holiday statutory tax rate		25.00%
Minimum [Member]
Effect Of Tax Cuts and Jobs Act [Abstract]
Income tax holiday statutory tax rate		15.00%
Thailand [Member]
Effect Of Tax Cuts and Jobs Act [Abstract]
Total tax incentives		$ 4,110,000	4,923,000	8,362,000
Income tax holidays expiration date		December 31, 2030
China [Member]
Effect Of Tax Cuts and Jobs Act [Abstract]
Total tax incentives		$ 1,663,000	$ 1,338,000	$ 643,000
Income tax holidays expiration date		December 31, 2026
Foreign [Member]
Effect Of Tax Cuts and Jobs Act [Abstract]
Operating loss carryforwards		$ 76,900,000
Foreign operating loss with indefinite carry forward period		$ 11,700,000
Operating loss carryforwards expiration Year		2034
State and local [Member]
Effect Of Tax Cuts and Jobs Act [Abstract]
Operating loss carryforwards		$ 20,500,000
Tax credit carryforward expiration year		2026
Tax credit carryforward		$ 100,000
State and local [Member] | Earliest Tax Year [Member]
Effect Of Tax Cuts and Jobs Act [Abstract]
Operating loss carryforwards expiration Year		2037
State and local [Member] | Latest Tax Year [Member]
Effect Of Tax Cuts and Jobs Act [Abstract]
Operating loss carryforwards expiration Year		2044
Research Tax Credit Carryforward [Member]
Effect Of Tax Cuts and Jobs Act [Abstract]
Tax credit carryforward		$ 6,600,000
Research Tax Credit Carryforward [Member] | Maximum [Member]
Effect Of Tax Cuts and Jobs Act [Abstract]
Tax credit carryforward expiration year		2044
Research Tax Credit Carryforward [Member] | Minimum [Member]
Effect Of Tax Cuts and Jobs Act [Abstract]
Tax credit carryforward expiration year		2038