Income Taxes - Schedule of Deferred Income Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Deferred tax assets:
Accrued expenses	$ 547	$ 889
Allowance for credit losses	642	501
Contract overrun reserves	1,145	1,323
Deferred compensation	590	526
Deferred revenue	0	0
Employment-related accruals	4,883	5,022
Environmental reserves	496	501
Federal tax credit carryforwards	0	133
Inventory reserves	3,907	4,628
Operating lease liabilities	6,983	7,318
Pension obligation	143	553
Federal and state net operating loss carryforwards	1,764	2,560
Research expenses	29,956	21,822
State tax credit carryforwards	7,992	7,582
Stock-based compensation	1,753	1,852
Other	1,918	1,798
Total gross deferred tax assets	62,719	57,008
Valuation allowance	(7,216)	(7,464)
Total gross deferred tax assets, net of valuation allowance	55,503	49,544
Deferred tax liabilities:
Deferred revenue	(2,374)	(2,794)
Depreciation	(11,533)	(11,622)
Goodwill	(13,149)	(10,973)
Intangibles	(14,167)	(16,265)
Interest rate hedge	(4,129)	(3,659)
Operating lease right-of-use assets	(6,702)	(7,087)
Prepaid insurance	(755)	(770)
Other	(455)	(499)
Total gross deferred tax liabilities	(53,264)	(53,669)
Net deferred tax assets (liabilities)	$ 2,239
Net deferred tax assets (liabilities)		$ (4,125)