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INCOME TAXES - Components of Income Tax - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 21, 2017 | Dec. 31, 2016
Operating loss carryforwards |  |  |  |
Effective tax rate (as a percent) | 35.10% | (2.80%) |  |
Increase (net) in unrecognized tax benefits recognized discretely | $ 10,600 | $ 4,400 |  |
Benefit (net) to record a return to accrual adjustment | 4,700 |  |  |
Benefit to recognize a capital loss carryover due to capital gains | 1,200 |  |  |
Benefit (net) to record the change in valuation allowance | 1,400 |  |  |
Provision for the intercompany sale of assets | $ 1,700 |  |  |
Net impact of the 2017 Tax Act |  | 10,600 |  |
U.S. federal statutory rate | 21.00% |  | 35.00% |
Benefit on the remeasurement of the deferred tax assets and liabilities |  | 18,000 |  |
Provision on the deemed repatriation of undistributed foreign earnings |  | 7,400 |  |
Benefit for the net capital transactions |  | 3,900 |  |
Benefit for an amended return refund claim |  | 3,400 |  |
Change in valuation allowance | $ 1,539 | 6,137 |  | $ (7,292)
Provision related to an impairment charge to write down the value of assets |  |  |  | 2,622
Operating loss carryforward that will expire | 64,000 |  |  |
Operating loss carryforward with no expiration | 53,100 |  |  |
Valuation allowance | 31,442 | 35,829 |  |
Tax Credits | 645 | 8,969 |  |
Undistributed earnings of foreign subsidiaries | 119,700 |  |  |
Unrecognized benefits, including interest and penalties | 34,700 | 24,100 |  | 20,000
Increase from prior period positions | 8,800 |  |  |
Increase in unrecognized tax benefits taken during the current period | 3,408 | 3,394 |  | $ 2,321
Settlement of prior year positions | 1,600 |  |  |
Guyana |  |  |  |
Operating loss carryforwards |  |  |  |
Cash distribution received from foreign subsidiaries with no impact of deferred tax liability | 51,600 |  |  |
Federal |  |  |  |
Operating loss carryforwards |  |  |  |
Operating loss carryforwards | 1,200 |  |  |
NOL carryforward valuation allowance |  | 1,900 |  |
Foreign |  |  |  |
Operating loss carryforwards |  |  |  |
Operating loss carryforwards | 115,800 |  |  |
Valuation allowance | 31,400 |  |  |
NOL carryforward valuation allowance | 29,100 | 24,300 |  |
Tax Credits |  | 8,200 |  |
Remaining valuation allowance applied to other foreign deferred taxes | $ 2,300 | $ 1,400 |  |

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