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Schedule of Other Assets (Detail) - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017
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Other Assets, Noncurrent [Abstract] |  |
Recoverable insurance losses | $ 2,495 | $ 2,405
Investments held for supplemental savings plan accounts | 6,554 | 6,583
Long-term deposits | 16,035 | 16,217
Other | 5,699 | 5,847
Total other assets | $ 30,783 | $ 31,052

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