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INCOME TAXES (Provision for Tax Expense) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest [Abstract] |  |  |
Domestic | $ 101,714 | $ 87,328 | $ 164,105
Foreign | (43,025) | (78,612) | (54,459)
Income (loss) before (benefit) provision for income taxes | 58,689 | 8,716 | 109,646
Current: |  |  |
Federal | 25,613 | 14,798 | 46,775
State | 11,083 | 8,763 | 11,120
Foreign | 4,589 | 9,844 | 5,719
Current Income Tax Expense (Benefit) | 41,285 | 33,405 | 63,614
Deferred |  |  |
Federal | (85,488) | 21,814 | 12,254
State | 1,085 | 1,644 | 2,766
Foreign | 1,068 | (8,274) | (13,090)
Deferred income taxes | (83,335) | 15,184 | 1,930
(Benefit) provision for income taxes | (42,050) | 48,589 | 65,544
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract] |  |  |
Tax expense at US statutory rate | 20,541 | 3,051 | 38,376
State income taxes, net of federal benefit | 4,547 | 6,010 | 8,449
Foreign rate differential | 3,733 | 3,646 | 3,951
Valuation allowance | 16,552 | 22,564 | 1,824
Uncertain tax position interest and penalties | 3,730 | 107 | 32
Goodwill impairment | 0 | 11,905 | 10,974
Other | 1,856 | 1,306 | 1,938
Adjustment for Tax Cuts and Jobs Act | (93,009) | 0 | 0
(Benefit) provision for income taxes | $ (42,050) | $ 48,589 | $ 65,544

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