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INVENTORIES - Activity in reserves for excess and obsolete inventory (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016
Inventory Disclosure [Abstract] |  |
Balance at beginning of period | $ (191,514) | $ (168,105)
Provision for excess and obsolete inventory | (24,829) | (58,485)
Disposal of unsaleable inventory | 29,442 | 30,161
Other | (6,547) | 4,915
Balance at end of period | $ (193,448) | $ (191,514)

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- Definition Inventory Valuation Reserve, Disposal of Unsaleable Inventory + References No definition available. + Details
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- Definition Inventory Valuation Reserve, Provision for Excess and Obsolete Inventory + References No definition available. + Details
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- References No definition available. + Details
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