Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Details)

v3.19.3
Stockholders' Equity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 3 Months Ended 9 Months Ended
Mar. 29, 2019
Jul. 22, 2016
May 31, 2019
Apr. 30, 2019
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Aug. 16, 2019
Aug. 15, 2019
Dec. 31, 2018
Aug. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Share of equity or debt financing used to calculate equity fee or stock issuance to maintain parity (as a percent)   2.50%                    
Common stock, shares authorized         85,000,000   85,000,000   85,000,000 50,000,000 85,000,000  
Common stock par value (in dollars per share)         $ 0.0001   $ 0.0001       $ 0.0001  
Common stock issuable, shares         0   0       709,314  
Aggregate value of shares subscribed         $ 0   $ 0       $ 2,085  
Common stock, number of shares issued         39,578,371   39,578,371       26,610,183  
Placement agent fees             $ 2,088 $ 0        
Issuance of common shares, net of offering costs - Public Offering             29,537          
Proceeds from issuance of common stock and warrants, offering cost             2,088 0        
Research and development - licenses acquired         $ 700 $ 1,000 1,350 $ 1,075        
At The Market Offering                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Proceeds from issuance of common shares             $ 22,000          
Maximum value of shares authorized to sell at offering                       $ 75,000
Agent commission (as a percent)                       3.00%
Common stock, number of shares issued         3,500,000   3,500,000       0  
Placement agent fees             $ 500          
Share price         $ 6.42   $ 6.42          
Issuance of common shares, net of offering costs - Public Offering             $ 22,500          
Proceeds from issuance of common stock and warrants, offering cost             500          
At The Market Offering | Fortress Biotech, Inc                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Share of equity or debt financing used to calculate equity fee or stock issuance to maintain parity (as a percent)       2.50%                
Shares issued for services (in shares)       87,656                
Issuance of common shares - Founders Agreement             500          
Proceeds from issuance of common shares       $ 22,500                
Issuances Related To Debt Financing | Fortress Biotech, Inc                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Share of equity or debt financing used to calculate equity fee or stock issuance to maintain parity (as a percent) 2.50%                      
Shares issued for services (in shares) 108,069                      
Issuance of common shares - Founders Agreement             400          
Public Offering                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Proceeds from issuance of common shares       29,500                
Maximum value of shares authorized to sell at offering         $ 75,000   75,000          
Securities available for sale         $ 20,900   20,900          
Placement agent fees       $ 2,100                
Share price       $ 4.00                
Issuance of common shares and warrants for cash (In shares)       6,875,000                
Issuance of common shares, net of offering costs - Public Offering       $ 31,600                
Proceeds from issuance of common stock and warrants, offering cost       $ 2,100                
Public Offering | Fortress Biotech, Inc                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Share of equity or debt financing used to calculate equity fee or stock issuance to maintain parity (as a percent)     2.50%                  
Shares issued for services (in shares)     197,656                  
Issuance of common shares - Founders Agreement             $ 800          
Proceeds from issuance of common shares     $ 31,600                  
Public Offering                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Common stock, number of shares issued         7,900,000   7,900,000          
Share price         $ 4.00   $ 4.00          
Over-Allotment Option [Member]                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Issuance of common shares and warrants for cash (In shares)       1,031,250                
Common Shares                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Shares issued for services (in shares)             709,314 834,756        
Number of shares converted             137,608          
Issuance of common shares and warrants for cash (In shares)             7,906,250          
Issuance of common shares, net of offering costs - Public Offering             $ 1          
Common Shares | City Of Hope National Medical Center ("COH") [Member]                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Number of shares issued in conversion       137,608                
Class A Common Shares                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Shares issued for services (in shares)             0 0        
Number of shares converted             (137,608)          
Common stock, number of shares issued         862,392   862,392       1,000,000  
Issuance of common shares and warrants for cash (In shares)             0          
Issuance of common shares, net of offering costs - Public Offering             $ 0          
Class A Common Shares | City Of Hope National Medical Center ("COH") [Member]                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Number of shares converted       137,608                
City Of Hope National Medical Center ("COH") [Member] | Common Shares                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Number of shares owned         431,196   431,196          
City Of Hope National Medical Center ("COH") [Member] | Class A Common Shares                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Number of shares owned         862,392   862,392