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Income Taxes - Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Income Taxes [Line Items]      
Provision for state income taxes $ 15,000 $ 0  
Valuation allowance 110,907,000 106,717,000  
Unrecognized tax benefits 4,795,000 4,128,000 $ 3,397,000
Unrecognized tax benefits that, if recognized, would affect the effective tax rate 4,400,000    
Interest and/or penalties recognized 0 0  
Interest and penalties accrued 0 $ 0  
Capitalization of research and development expenses $ 25,300,000    
Federal      
Income Taxes [Line Items]      
Tax years remain open for examination, statute of limitation term 3 years    
Maximum      
Income Taxes [Line Items]      
Provision for state income taxes $ 100,000