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INCOME TAXES - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Taxes [Line Items] |  |  |  |
Tax expense related to foreign withholding taxes | $ 13,900 | $ 35,899 | $ 39,830 | $ 32,638
Tax benefits related to excess foreign tax credits | 11,100 |  |  |
Tax benefit related to foreign exchange losses on previously taxed income | 1,800 |  |  |
Increase in income tax payable due to repatriation of foreign earnings |  | 3,900 |  |
Unrecognized tax benefits and related interest and penalties, all of which would affect our effective tax rate if recognized | 39,900 | 39,900 |  |
Expected decrease in unrecognized tax benefits in next twelve months due to lapsing statutes | 3,100 | 3,100 |  |
Interest and penalties recognized |  | 1,000 | 1,000 | $ 700
Interest and penalties accrued | 6,000 | 6,000 | 6,500 |
Foreign net operating loss carryforwards tax effect | 11,100 | 11,100 | 8,100 |
Foreign operating loss carryforwards |  |  |  |
Income Taxes [Line Items] |  |  |  |
Valuation allowance against deferred tax asset | $ 8,500 | $ 8,500 | $ 6,400 |

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