Annual report pursuant to Section 13 and 15(d)

Income Taxes - Reconciliation of Income Taxes (Details)

v3.21.1
Income Taxes - Reconciliation of Income Taxes (Details)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
U.S. statutory rate 21.00% 21.00% 21.00%
Increase (decrease) resulting from:      
Permanent differences 0.00% (0.20%) (1.00%)
State income taxes 9.00% 0.40% (2.90%)
Other 0.00% 0.00% 1.90%
Vesting of common stock (0.70%) 0.00% (0.10%)
Change in valuation allowance (29.10%) (21.00%) (21.70%)
Income tax (expense) benefit 0.20% 0.20% (2.80%)