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Inventories - Additional Information (Detail) - USD ($) | Dec. 31, 2015 | Dec. 31, 2014
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Inventory Disclosure [Abstract] |  |
LIFO reserve | $ 18,171,000 | $ 34,340,000

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- References No definition available. + Details
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- Definition Amount of difference between inventory at lower of LIFO cost or market and inventory at lower of other inventory accounting method cost or market, for example, but not limited to, FIFO or average cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(c)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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