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INCOME TAXES (Provision (Benefit) for Income Taxes as a Percent) (Details) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Income Tax Disclosure [Abstract] |  |  |
Statutory U.S. federal income tax rate | 21.00% | 35.00% | 35.00%
State income taxes, net of U.S. federal income tax benefit | 5.50% | (5.50%) | 3.40%
U.S. tax impact of foreign operations | 102.50% | 1.00% | (53.40%)
Valuation allowance change | (13.90%) | 405.30% | 77.60%
Unrecognized tax benefits | (58.70%) | (91.10%) | 4.70%
Domestic manufacturing deduction | (0.00%) | (0.00%) | (2.80%)
Permanent foreign items | 28.60% | 53.70% | 26.80%
Withholding tax on royalties | 20.00% | (0.00%) | (0.00%)
Re-measurement of deferred tax assets/liabilities | 0.00% | 117.60% | 0.00%
Stock Compensation | 12.70% | 0.00% | 0.00%
Tax Return to Provision Differences | 11.70% | 0.00% | 0.00%
Elimination of provision on intercompany transactions | 4.40% | 4.60% | 0.10%
Other | 3.80% | 8.20% | 1.30%
Effective income tax rate | 137.60% | 528.80% | 92.70%

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