Quarterly report pursuant to Section 13 or 15(d)

Stockholders Equity (Common Stock and Equity Offerings) (Narrative) (Details)

v3.23.3
Stockholders Equity (Common Stock and Equity Offerings) (Narrative) (Details)
 9 Months Ended
Oct. 30, 2023
USD ($)
Oct. 26, 2023
$ / shares
shares
Mar. 15, 2023
Mar. 03, 2023
$ / shares
Sep. 30, 2023
USD ($)
$ / shares
shares
Sep. 30, 2022
USD ($)
$ / shares
shares
Dec. 31, 2022
$ / shares
shares
May 24, 2021
USD ($)
Dec. 04, 2020
USD ($)
Aug. 31, 2018
Stockholders' Equity                    
Stockholders' Equity Note, Stock Split, Conversion Ratio     0.0667              
Preferred stock par value (in dollars per share) | $ / shares       $ 0.0001 $ 0.0001   $ 0.0001      
Number of fractional shares issued in connection with the Reverse Stock Split         0          
Common stock, shares issuable         6,987   187,134      
Shares available for future sale         380,089          
Minimum                    
Stockholders' Equity                    
Stockholders' Equity Note, Stock Split, Conversion Ratio       0.20            
Maximum                    
Stockholders' Equity                    
Stockholders' Equity Note, Stock Split, Conversion Ratio       0.05            
At the Market Offering [Member]                    
Stockholders' Equity                    
Agent commission (as a percent)                   3.00%
Issuance of common shares (in shares)         52,000 525,000        
Shares issued, price per share | $ / shares         $ 3.15 $ 12.61        
Proceeds from issuance of common shares | $         $ 200,000 $ 6,600,000        
Aggregate fees of stock issuance | $         3,000 $ 100,000        
Registration Statements [Member]                    
Stockholders' Equity                    
Sale of Stock aggregate offering price - Founders Agreement | $               $ 200,000,000.0 $ 100,000,000.0  
Shares available for future issuance - Founders Agreement | $         $ 7,800,000          
Subsequent event | Registration Statements [Member]                    
Stockholders' Equity                    
Amount for issued and sale of registered direct offering | $ $ 4,400,000                  
Issuance of common shares (in shares)   920,000                
Shares issued, price per share | $ / shares   $ 1.70                
Aggregate fees of stock issuance | $ $ 500,000                  
Fortress Biotech, Inc [Member]                    
Stockholders' Equity                    
Issuance of common shares (in shares)         0 13,131        
Shares issued, price per share | $ / shares           $ 13.56        
Common stock, shares issuable         1,297