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INCOME TAXES - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Valuation Allowance [Line Items] |  |  |
Tax benefit from deferred tax change | $ 3,000 |  |
Excess tax benefits from share-based compensation | (11,625) | $ (15,370) | $ (13,400)
U.S. Global Intangible Low-Taxed Income ("GILTI") and Base Erosion Anti-Abuse Tax ("BEAT") | (3,909) | (1,485) | 5,625
Deferred Tax Assets, Valuation Allowance | 23,105 | 23,320 |
Net operating loss carryforwards | 19,353 | 24,941 |
Amount of state tax credit carryforwards subject to expiration | 7,000 |  |
Tax-effected net operating loss carryforwards not subject to expiration | 15,800 |  |
Tax-effected net operating loss subject to expiration | 3,600 |  |
Contingent foreign income tax payable on uncertain tax positions | 1,500 |  |
Unrecognized tax benefits that would impact effective tax rate | 4,500 |  |
Decrease in unrecognized tax benefits is reasonably possible | 2,600 |  |
Unrecognized tax benefits, income tax penalties and interest accrued | 3,600 | 1,700 | 1,900
Unrecognized tax expense (benefit), income tax penalties and interest expense | 0 | $ (200) | $ 400
Minimum | Foreign Tax Authority |  |  |
Valuation Allowance [Line Items] |  |  |
Estimated additional tax payable on previously unremitted earnings | 15,000 |  |
Maximum | Foreign Tax Authority |  |  |
Valuation Allowance [Line Items] |  |  |
Estimated additional tax payable on previously unremitted earnings | 25,000 |  |
Deferred tax assets for specified locations |  |  |
Valuation Allowance [Line Items] |  |  |
Deferred Tax Assets, Valuation Allowance | 16,700 |  |
Deferred tax assets related to tax credit carryforwards, U.S. state |  |  |
Valuation Allowance [Line Items] |  |  |
Deferred Tax Assets, Valuation Allowance | $ 3,700 |  |

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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for tax benefits from share-based compensation. + References No definition available. + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in GILTI and BEAT taxes. + References No definition available. + Details
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