Income Taxes - Schedule of Deferred Income Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets:
Accrued expenses	$ 627	$ 620
Allowance for doubtful accounts	152	269
Contract overrun reserves	952	680
Deferred compensation	234	272
Deferred revenue	943	1,570
Employment-related accruals	3,932	4,028
Environmental reserves	501	499
Federal tax credit carryforwards	133	133
Inventory reserves	3,572	2,957
Operating lease liabilities	8,672	8,145
Pension obligation	28	1,550
Federal and state net operating loss carryforwards	3,397	4,243
Research expenses	10,620	0
State tax credit carryforwards	6,974	7,123
Stock-based compensation	2,420	2,584
Other	1,525	2,503
Total gross deferred tax assets	44,682	37,176
Valuation allowance	(7,548)	(7,718)
Total gross deferred tax assets, net of valuation allowance	37,134	29,458
Deferred tax liabilities:
Depreciation	(11,286)	(11,986)
Goodwill	(8,630)	(6,557)
Intangibles	(18,310)	(20,337)
Interest rate hedge	(3,359)	0
Operating lease right-of-use assets	(8,346)	(7,931)
Prepaid insurance	(609)	(534)
Other	(547)	(840)
Total gross deferred tax liabilities	(51,087)	(48,185)
Net deferred tax liabilities	$ (13,953)	$ (18,727)