Annual report pursuant to Section 13 and 15(d)

Income Taxes - Effective Tax Rates Differ from Statutory Federal Income Tax (Details)

v3.20.4
Income Taxes - Effective Tax Rates Differ from Statutory Federal Income Tax (Details)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]      
Statutory Federal Income Tax Rate 21.00% 21.00% 21.00%
Stock Compensation Expense (0.30%) (0.50%) (0.90%)
Non Deductible Goodwill Impairment (10.20%) 0.00% 0.00%
Other 0.00% 0.50% 0.40%
Foreign Tax Rate Differential (1.00%) 1.40% 0.50%
State Income Tax, Net of Federal Income Tax Effect 3.30% 6.00% 2.80%
Revised State Filing Tax Benefit, Net of Federal Income Tax Effect, Net of Reserve 0.00% 0.00% (6.70%)
Research and Development Tax Credits 2.20% (4.60%) (6.20%)
Change in Valuation Allowance (19.20%) 1.10% 0.00%
Net GILTI and FDII Tax (Benefit) Expense 0 (0.012) 0.002
Tax Expense (Benefit) on Deemed Repatriation of Foreign Earnings 0.00% 0.00% (0.80%)
Revaluation of Deferred Taxes for Federal Tax Rate Change 0.00% 0.00% (0.10%)
Tax Rate Change on 2020 Federal Net Operating Loss (“NOL”) 1.30% 0.00% 0.00%
Other (0.10%) 0.10% 0.30%
Effective Tax Rate (3.00%) 23.80% 10.50%