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Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Deferred tax assets: |  |
Pension and other postretirement liabilities | $ 18,653 | $ 21,235
Rationalization and other accrued liabilities | 19,343 | 17,716
AMT and other credit carryforwards | 3,701 | 1,910
Net operating loss carryforwards | 31,679 | 34,102
Other Intangible Assets | 3,964 | 0
Foreign currency translation | 234 | 10,170
Inventory and related reserves | 6,988 | 9,832
Other | 5,971 | 2,093
Total deferred tax assets | 90,533 | 97,058
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent | 21,100 | 26,600
Deferred tax liabilities: |  |
Property, plant and equipment | (185,101) | (175,486)
Pension and other postretirement liabilities | (14,393) | (23,780)
Other intangible assets | (117,168) | (115,547)
Other | (7,275) | (3,961)
Total deferred tax liabilities | (323,937) | (318,774)
Valuation allowance | (13,541) | (14,089)
Net deferred tax liabilities | (246,945) | (235,805)
Deferred Tax Liabilities, Net, Noncurrent | $ 268,000 | $ 262,400

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