Annual report pursuant to Section 13 and 15(d)

Income Taxes - Operating loss carryforward (Details)

v3.22.1
Income Taxes - Operating loss carryforward (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Operating Loss Carryforwards [Line Items]    
Reduction of income tax expense $ 41.2  
Increase in equity 2.2  
Domestic    
Operating Loss Carryforwards [Line Items]    
Net operating losses with expiry 20.1 $ 20.1
Net operating losses with no expiry 79.3 33.9
Domestic | Research    
Operating Loss Carryforwards [Line Items]    
Tax credit carryforwards 3.3 2.5
State    
Operating Loss Carryforwards [Line Items]    
Net operating losses with expiry 75.3 42.6
State | Research    
Operating Loss Carryforwards [Line Items]    
Tax credit carryforwards 2.1 $ 1.7
Foreign    
Operating Loss Carryforwards [Line Items]    
Net operating losses with expiry $ 1.5