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INCOME TAXES - Schedule of Effective Income Tax Rate Reconciliation (Details) | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Tax Disclosure [Abstract] |  |  |
U.S. statutory income tax rate | 21.00% | 21.00% | 35.00%
State income taxes, net of federal benefit | (0.20%) | (0.10%) | 1.20%
Foreign income taxes | (1.00%) | (5.70%) | (0.50%)
Acquisition costs | (0.50%) | (0.30%) | (6.00%)
Foreign deemed dividends | (0.40%) | (3.40%) | (3.80%)
Stock-based compensation | (0.70%) | (0.30%) | 26.80%
Tax credits | 2.80% | 0.60% | (33.30%)
Uncertain tax positions | (0.20%) | 1.30% | (1.20%)
NOL and credit limitations | 0.00% | 0.00% | (18.90%)
Valuation allowance | (0.70%) | (16.10%) | 29.00%
Goodwill amortization | 0.40% | 0.30% | (1.70%)
Meals and entertainment | (0.30%) | (0.40%) | (0.50%)
Tax reform | (0.001) | 0.000 | 0.088
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Impairment Losses, Percent | (25.40%) | 0.00% | 0.00%
Other, net | (0.50%) | (1.50%) | (0.60%)
Effective income tax rate | (5.80%) | (4.60%) | 34.30%

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