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Change in Method of Accounting for Inventory Valuation - Additional Information (Detail) - USD ($) $ in Thousands | Sep. 30, 2019 | Dec. 31, 2018
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Change In Accounting Estimate [Line Items] |  |  |
Percentage of LIFO inventory |  |  | 68.00%
Retained earnings | [1],[2] | $ 906,612 | $ 837,107
Effect of Change [Member] |  |  |
Change In Accounting Estimate [Line Items] |  |  |
Retained earnings |  | $ (21,397) | $ 23,659
[1] | The 2018 amounts for the noted line items have been retrospectively changed from the amounts originally reported as a result of the Company’s first quarter 2019 change in method of accounting for U.S. inventory valuation from LIFO to FIFO.
[2] | The 2019 amounts for the noted line items include an adjustment related to the Company’s first quarter 2019 adoption of ASU No. 2018-02, Income Statement – Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.

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