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INCOME TAXES (Additional Information) (Details) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Oct. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |
Effective income tax rate (as a percent) |  |  | 30.50% | (71.60%) | 557.50%
Net benefit from enacted tax act |  | $ (93,000) | $ 300 |  |
Tax benefit for the remeasurement of deferred tax assets and liabilities |  | 100,500 |  | $ 100,500 |
One-time tax expense on deemed repatriation |  | 7,500 |  | 7,500 |
One-time deemed repatriation, adjusted |  |  |  | 6,600 |
Adjustment from one-time deemed repatriation to tax expense |  |  | 900 |  |
Tax benefit due to reduction in net deferred tax liability |  | 93,000 |  | 99,900 |
Deferred expense |  |  | 600 |  |
Benefit to income tax expense | $ 3,300 |  | 9,800 |  |
Additional income tax benefit upon amendments of 2014 through 2016 tax returns | $ (7,100) |  |  |  |
Valuation allowance |  | 68,355 | 79,295 | 68,355 |
Valuation allowance, foreign tax credits |  | 17,500 | 16,500 | 17,500 |
Valuation allowance, federal net operating loss carryforwards |  | 3,900 | 800 | 3,900 |
Valuation allowance, state net operating loss carryforwards |  | 11,900 | 9,600 | 11,900 |
Valuation allowance, foreign net operating loss carryforwards |  | 22,600 | 22,700 | 22,600 |
Valuation allowance, deferred tax assets of Canadian subsidiary |  | 12,500 | 26,600 | 12,500 |
Valuation allowance, deferred tax assets of Canadian subsidiary, tax attributes |  |  | 3,100 |  |
Unrecognized tax benefits that would impact effective tax rate |  | 5,100 | 3,200 | 5,100 | $ 1,700
Unrecognized tax benefits, income tax penalties and interest accrued |  | $ 900 | 800 | 900 | 300
Unrecognized tax benefits, penalties and interest |  |  | (100) | $ 500 | 100
Reduction in unrecognized tax benefit from the expiration of statue of limitations and the resolution of tax audits |  |  | $ 600 |  |
Foreign Currency Translation Adjustments |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |
Tax effects |  |  |  |  | $ 5,000

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