XML 90 R55.htm IDEA: XBRL DOCUMENT v3.22.0.1
Income Taxes - Additional Information (Details) - USD ($)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Income Taxes [Line Items]    
Valuation allowance increased amount $ 11,000,000.0  
Income tax expense 0  
Reserves for uncertain tax positions 0 $ 0
Interest and penalties accrued on uncertain tax positions 0 0
Interest or penalties recognized on uncertain tax positions $ 0 $ 0
Earliest Tax Year    
Income Taxes [Line Items]    
Income tax returns years open and subject to examination 2018  
Latest Tax Year    
Income Taxes [Line Items]    
Income tax returns years open and subject to examination 2021  
Federal | Research and Development Tax Credit Carryforwards    
Income Taxes [Line Items]    
Tax credit carryforwards amount $ 5,000,000.0  
Tax credit carryforwards begin to expire 2031-12  
Federal | Not Subject to Expiration    
Income Taxes [Line Items]    
Operating loss carryforwards $ 86,800,000  
State | Research and Development Tax Credit Carryforwards    
Income Taxes [Line Items]    
Tax credit carryforwards amount $ 1,700,000  
Tax credit carryforwards begin to expire 2031-12  
State | Begin to Expire in 2037    
Income Taxes [Line Items]    
Operating loss carryforwards $ 83,400,000  
Operating loss carryforwards expiration year 2037