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Income Taxes - Significant Components of Current and Non-current Deferred Taxes (Detail) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Income Tax Disclosure [Abstract] |  |
Inventory | $ 9,538 | $ 8,882
Accrued expenses | 3,851 | 2,331
Deferred compensation | 7,027 | 6,714
Stock-based compensation | 1,469 | 1,971
Uncertain tax positions related to state taxes and related interest | 124 | 149
Pensions | 6,061 | 8,554
Foreign losses | 2,862 | 2,590
State losses and credit carry-forwards | 5,914 | 5,509
Federal loss and research carry-forwards | 21,606 | 17,323
Lease liabilities | 1,471 | 1,588
Capitalized research and development expenditures | 9,349 | 11,832
Valuation allowance | (50,564) | (45,818)
Net Deferred Tax Assets | 18,708 | 21,625
Property, plant and equipment | (3,590) | (4,546)
Intellectual property | (3,230) | (4,375)
Right of use lease assets | (1,459) | (1,585)
Investments | (1,350) | (1,250)
Total Deferred Tax Liabilities | (9,629) | (11,756)
Net Deferred Tax Assets | $ 9,079 | $ 9,869

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