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Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Deferred tax assets: |  |
Pension liability | $ 17,439 | $ 11,931
Accrued warranty expense | 1,641 | 1,694
Capitalized Section 174 expenditures | 23,800 | 11,145
Accrued vacation pay | 3,103 | 3,246
Accrued liabilities for self-insurance (including postretirement health care benefits) | 0 | 17
Accrued liabilities for executive and employee incentive compensation | 13,784 | 12,475
Environmental and products liabilities | 20,576 | 20,983
Lease liabilities | 4,860 | 5,298
Investments in joint ventures and affiliated companies | 224 | 1,494
Long-term contracts | 13,363 | 14,442
Accrued payroll taxes | 0 | 2,504
U.S. federal tax credits and loss carryforward | 7,055 | 7,113
U.S. state tax credits and loss carryforward | 7,935 | 4,731
Foreign tax credit and loss carryforward | 22,869 | 20,209
Other | 2,018 | 2,719
Gross deferred tax assets | 138,667 | 120,001
Valuation allowance for deferred tax assets | (17,421) | (13,022)
Total deferred tax assets | 121,246 | 106,979
Deferred tax liabilities: |  |
Property, plant and equipment | 85,661 | 75,334
Right-of-use lease assets | 11,550 | 12,246
Accrued liabilities for self-insurance (including postretirement health care benefits) | 341 | 0
Intangibles | 21,976 | 22,404
Total deferred tax liabilities | 119,528 | 109,984
Net deferred tax assets | $ 1,718 |
Net deferred liabilities |  | $ (3,005)

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