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INCOME TAXES - Effective Tax Rates Differ from Statutory Federal Income Tax (Details) | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Income Tax Disclosure [Abstract] |  |  |
Statutory Federal Income Tax Rate | 21.00% | 21.00% | 21.00%
Stock Compensation Expense | (2.10%) | (0.30%) | (0.50%)
Non Deductible Goodwill Impairment | 0.00% | (10.20%) | 0.00%
Contingent Consideration Liability Fair Value Adjustment | 1.70% | 0.00% | 0.00%
Other | (0.70%) | 0.00% | 0.50%
Foreign Tax Rate Differential | (2.70%) | (1.00%) | 1.40%
State Income Tax, Net of Federal Income Tax Effect | 2.20% | 3.30% | 6.00%
Research and Development Tax Credits | 12.80% | 2.20% | (4.60%)
Change in Valuation Allowance | (29.80%) | (19.20%) | 1.10%
Net GILTI and FDII Tax Benefit | 0 | 0 | (0.012)
Foreign Tax Credit for Dividend Withholding | 1.70% | 0.00% | 0.00%
Tax Rate Change on 2020 Federal Net Operating Loss Carryback | 0.90% | 1.30% | 0.00%
Other | 0.10% | (0.10%) | 0.10%
Effective Tax Rate | 5.10% | (3.00%) | 23.80%

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