v3.23.2
Income Taxes - Narrative (Details) - USD ($)
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Income Tax Disclosure [Line Items]    
Current income tax expense (benefit) $ 0 $ 0
Deferred income tax expense (benefit) 0 0
Increase (decrease) in valuation allowance, deferred tax assets 18,200,000 64,200,000
Deferred capitalized start up expense net of amortization 100,000 300,000
Deferred income tax amortization 1,800,000 1,700,000
Research and development tax credit carryforwards 4,827,000 5,034,000
Decrease in deferred tax asset 44,900,000  
Federal    
Income Tax Disclosure [Line Items]    
Net operating loss carryforwards 1,230,700,000 1,224,500,000
Net operating loss carryforwards indefinitely due to tax cut and jobs act 648,700,000  
Research and development tax credit carryforwards 2,500,000  
State    
Income Tax Disclosure [Line Items]    
Net operating loss carryforwards 1,808,500,000 $ 1,794,200,000
Research and development tax credit carryforwards $ 2,900,000