Annual report pursuant to Section 13 and 15(d)

Income Taxes - Narrative (Details)

v3.23.1
Income Taxes - Narrative (Details) - USD ($)
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Income Tax Examination [Line Items]    
Current federal and state income tax expense (benefit) $ 0 $ 0
Deferred federal and state income tax expense (benefit) 0 0
Increase (decrease) in valuation allowance 740,000 $ 4,587,000
Capitalized research and development costs 3,300,000  
Federal    
Income Tax Examination [Line Items]    
Operating loss carryforwards 186,722,000  
Federal | Research and development tax credit    
Income Tax Examination [Line Items]    
Operating loss carryforwards 2,142,000  
State    
Income Tax Examination [Line Items]    
Operating loss carryforwards 120,724,000  
State | Research and development tax credit    
Income Tax Examination [Line Items]    
Operating loss carryforwards 723,000  
Foreign    
Income Tax Examination [Line Items]    
Operating loss carryforwards 11,650,000  
Generated before 2018, expire 2027 | Federal    
Income Tax Examination [Line Items]    
Operating loss carryforwards 120,792,000  
Generated before 2018, carryforward indefinitely | Federal    
Income Tax Examination [Line Items]    
Operating loss carryforwards $ 65,930,000