Annual report pursuant to Section 13 and 15(d)

Income Taxes - Income tax - Additional Information (Details)

v3.21.1
Income Taxes - Income tax - Additional Information (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Federal    
Operating Loss Carryforwards [Line Items]    
Net operating loss carryforwards $ 9.2 $ 6.2
State    
Operating Loss Carryforwards [Line Items]    
Net operating loss carryforwards $ 4.5 $ 3.0