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INCOME TAXES - Components of Income Tax - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2018 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Operating loss carryforwards |  |  |  |
Effective tax rate (as a percent) |  |  | (2.80%) | 46.60%
Net impact of the 2017 Tax Act |  |  | $ 10,600 |
U.S. federal statutory rate |  |  | 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 |
Increase (net) in unrecognized tax benefits related to current year and prior year positions |  |  | 4,400 |
Provision (net) to record the change in valuation allowance |  |  | 6,100 |
Provision related to certain transactional charges incurred in connection with our acquisitions |  |  |  | $ 3,100
Provision related to an impairment charge to write down the value of assets |  |  |  | 2,622
Provision related to the write-off of an unrecoverable tax receivable |  |  |  | 2,500
Operating loss carryforward that will expire |  |  | 95,100 |
Operating loss carryforward with no expiration |  |  | 3,700 |
Valuation allowance |  |  | 35,829 | 42,462
Tax Credits |  |  | 8,969 |
Net operating losses |  |  | 26,685 | 29,571
Undistributed earnings of foreign subsidiaries |  |  | 303,700 |
Undistributed earnings of foreign subsidiaries considered indefinitely reinvested |  |  | 262,100 |
Guyana |  |  |  |
Operating loss carryforwards |  |  |  |
Cash distribution received from foreign subsidiaries with no impact of deferred tax liability | $ 41,600 |  |  |
Capital Loss Carryforward |  |  |  |
Operating loss carryforwards |  |  |  |
Tax Credits |  |  | 8,200 |
Valuation allowance against capital loss |  |  | 1,900 |
Federal |  |  |  |
Operating loss carryforwards |  |  |  |
Operating loss carryforwards |  |  | 2,200 |
Capital loss carryforward that will expire |  |  | 9,000 |
Valuation allowance |  |  | 10,100 |
State |  |  |  |
Operating loss carryforwards |  |  |  |
NOL carryforward valuation allowance |  |  | 0 | 500
Net operating losses |  |  | 0 |
Foreign |  |  |  |
Operating loss carryforwards |  |  |  |
Operating loss carryforwards |  |  | 96,600 |
Valuation allowance |  |  | 25,700 |
NOL carryforward valuation allowance |  |  | 24,300 | 27,800
Remaining valuation allowance applied to other foreign deferred taxes |  |  | $ 1,400 | $ 14,100
Forecast |  |  |  |
Operating loss carryforwards |  |  |  |
U.S. federal statutory rate |  | 21.00% |  |

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