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Income Taxes - Reconciliation of Difference between Federal Statutory Income Tax Rate and Effective Income Tax Rate (Details)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Income Tax Disclosure [Abstract]      
Tax provision at federal statutory rate 21.00% 21.00% 21.00%
State taxes 5.99% 5.68% (46.76%)
Foreign tax rate differential 0.00% 0.00% 13.83%
Uncertain Tax Positions 0.05% 0.13% 0.00%
Stock based compensation (1.96%) (0.92%) (53.53%)
Return to provision (0.17%) (0.11%) (57.11%)
Other permanent differences 1.09% 0.02% 3.87%
Other (0.14%) (0.41%) 0.01%
Change in valuation allowance (0.10%) (0.52%) 129.22%
Effective tax rate 25.76% 24.87% 10.53%