Annual report pursuant to Section 13 and 15(d)

Income Taxes - Reconciliation of the Federal Statutory Income Tax Rate to the Effective Income Tax Rate (Details)

v3.20.4
Income Taxes - Reconciliation of the Federal Statutory Income Tax Rate to the Effective Income Tax Rate (Details)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Effective Income Tax Rate Continuing Operations Tax Rate Reconciliation [Abstract]      
U.S. Statutory rate 21.00% 21.00% 21.00%
State income taxes, net of federal benefit (3.86%) 3.70% (3.73%)
Stock-based compensation (16.80%) (0.81%) (45.01%)
R&D credit, net of reserve (8.11%) (8.97%) (1.39%)
Other (2.62%) (1.24%) 0.98%
Effective income tax rate (10.39%) 13.68% (28.15%)