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Income Taxes - Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Operating Loss Carryforwards [Line Items]    
Income tax provision $ 0.0 $ 0.0
Statutory income tax rate 21.00% 21.00%
Net valuation allowance, increased (decreased) $ 12.5 $ 11.3
Orphan drug credit carryforwards 13.6  
Domestic Tax Authority [Member]    
Operating Loss Carryforwards [Line Items]    
Net operating loss carry-forwards 188.2  
Research and development tax credit carry-forwards $ 1.5  
Net operating loss carry-forwards expiration 2027  
Operating loss carryforwards, not subject to expiration $ 147.9  
Research credit carryforwards expiration start year 2027  
State and Local Jurisdiction [Member]    
Operating Loss Carryforwards [Line Items]    
Net operating loss carry-forwards $ 106.6  
Research and development tax credit carry-forwards $ 2.7  
Net operating loss carry-forwards expiration 2030