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INCOME TAXES (Net Deferred Tax Assets and Liabilities) (Detail) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
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Income Tax Disclosure [Abstract] |  |
Net noncurrent deferred tax assets | $ 2,605 | $ 2,217
Net noncurrent deferred tax liabilities | 49,360 | 49,722
Deferred Tax Liabilities, Net | $ 46,755 | $ 47,505

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