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Stockholders' Equity (Warrants) (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended
Oct. 30, 2023
Oct. 31, 2022
Sep. 30, 2023
Jan. 19, 2023
Dec. 31, 2022
Oct. 30, 2022
Common Stock Warrants            
Common stock, par value (in dollars per share)     $ 0.01 $ 0.01 $ 0.01  
Warrants outstanding     0   303,804  
Debt Instrument principal amount           $ 10.0
Deerfield Facility Agreement            
Common Stock Warrants            
Warrant exercise, threshold percentage           4.985%
Deerfield Exchange Agreement            
Common Stock Warrants            
Exercise price (in dollars per share)           $ 0.001
Debt Instrument principal amount           $ 50.0
Debt conversion, shares Issued   296,774        
Debt conversion, warrants issued   1,054,395        
2022 Follow-on Public Offering            
Common Stock Warrants            
Proceeds from the issuance of common stock, net of underwriting discounts, commissions and offering expenses   $ 14.1        
Warrants outstanding     4,657,799   4,657,799  
2022 Follow-on Public Offering | Stock issuable upon exercise of warrants            
Common Stock Warrants            
Exercise price (in dollars per share)           $ 3.8
2022 Follow-on Public Offering | Pre-funded Warrant            
Common Stock Warrants            
Exercise price (in dollars per share)           $ 3.7
Subsequent Event            
Common Stock Warrants            
Common stock, par value (in dollars per share) $ 0.01          
Subsequent Event | Temporary Waiver And Exchange Agreement | Pre-funded Warrant            
Common Stock Warrants            
Warrant exercise, threshold percentage 4.985%          
Exercise price (in dollars per share) $ 0.01          
Common stock, par value (in dollars per share) $ 0.01          
Debt Instrument principal amount $ 1.2          
Debt conversion, warrants issued 886,635