Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Details Textual)

v3.7.0.1
Stockholders' Equity (Details Textual) - USD ($)
 1 Months Ended 3 Months Ended 12 Months Ended
Mar. 13, 2017
Mar. 13, 2016
Mar. 31, 2017
Feb. 28, 2017
Jan. 31, 2017
Sep. 30, 2016
Jul. 31, 2016
Jul. 27, 2016
Mar. 17, 2015
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Apr. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Common Stock, Shares, Issued     25,041,889             25,041,889   15,165,244  
Common Stock, Shares Authorized     50,000,000             50,000,000   50,000,000  
Common Stock, Par or Stated Value Per Share     $ 0.0001             $ 0.0001   $ 0.0001  
Common Stock, Voting Rights                   (1.1)      
Warrants Issued         2,134,193                
Payments of Stock Issuance Costs                   $ 5,663,000 $ 0    
Preferred Stock, Shares Authorized     2,000,000             2,000,000   2,000,000  
Preferred Stock, Par or Stated Value Per Share     $ 0.0001             $ 0.0001   $ 0.0001  
Stock Issued During Period, Value, Issued for Services                   $ 1,232,000      
City Of Hope [Member]                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Shares Issued, Price Per Share       $ 5.73                  
City Of Hope [Member] | Licensing Agreements [Member]                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Stock Issued During Period, Shares, Issued for Services       293,588                  
Share Price       $ 5.73                  
General and Administrative Expense [Member]                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Allocated Share-based Compensation Expense                   $ 1,200,000      
Common Stock [Member]                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Common Stock, Shares, Issued               7,000,000          
Unregistered Common Stock [Member]                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Warrants Issued     16,000                    
Stock Issued During Period, Shares, New Issues         8,536,774                
Series A Preferred Stock [Member]                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Preferred Stock, Shares Issued     250,000             250,000   250,000  
Common Stock, Shares Authorized               250,000          
Stock Issued During Period, Shares, New Issues                   0      
Shares, Outstanding     250,000             250,000   250,000  
Stock Issued During Period, Shares, Issued for Services                   0      
Stock Issued During Period, Value, Issued for Services                   $ 0      
Common Class B [Member]                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Stock Repurchased and Retired During Period, Shares               7,200,000          
Common Class A [Member]                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Common Stock, Shares, Issued     1,000,000             1,000,000   1,000,000  
Common Stock, Shares Authorized     1,000,000             1,000,000   1,000,000  
Stock Issued During Period, Shares, New Issues                   0      
Shares, Outstanding     1,000,000             1,000,000   1,000,000  
Stock Issued During Period, Shares, Issued for Services                   0      
Stock Issued During Period, Value, Issued for Services                   $ 0      
Preferred Class A [Member]                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Preferred Stock, Shares Issued     250,000             250,000      
Preferred Stock, Shares Authorized     2,000,000             2,000,000      
Preferred Stock, Par or Stated Value Per Share     $ 0.0001             $ 0.0001      
Fortress Biotech, Inc [Member]                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Shares Of Common Stock, Percentage     2.50%             2.50%      
Shares Issued, Price Per Share $ 5.73                        
Stock Issued During Period, Shares, Issued for Services 767,264                 4.4   767,264  
Stock Issued During Period, Value, Issued for Services $ 4,400,000                        
Fortress Biotech, Inc [Member] | Common Stock [Member]                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Stock Issued During Period, Shares, New Issues                   215,019      
Fortress Biotech, Inc [Member] | Series A Preferred Stock [Member]                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Stock Issued During Period, Shares, Issued for Services             250,000            
Fortress Biotech, Inc [Member] | Common Class B [Member]                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Common Stock, Shares, Issued   250,000                      
Diluted Outstanding Equity, Percentage   0.00%                      
City of Hope National Medical Center [Member]                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Stock Issued During Period, Shares, New Issues       293,588                  
City of Hope National Medical Center [Member] | License Agreement [Member]                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Payment Of Upfront Fees                 $ 2,000,000        
City of Hope National Medical Center [Member] | Common Stock [Member] | License Agreement [Member]                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Shares, Outstanding     293,588             293,588      
City of Hope National Medical Center [Member] | Common Class A [Member]                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Shares, Outstanding     1,000,000             1,000,000      
City of Hope National Medical Center [Member] | Common Class A [Member] | License Agreement [Member]                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners                         10.00%
Shares, Outstanding                         1,000,000
Private Placement [Member]                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Warrant Purchase Price Per Unit           $ 65,000              
Stock Issued During Period, Shares, New Issues           10,000              
Class of Warrant or Right, Number of Securities Called by Warrants or Rights           2,500              
Class of Warrant or Right, Exercise Price of Warrants or Rights           $ 8.50              
Private Placement [Member] | National Holdings Corporation [Member]                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Percentage Of Placement Agent Fee     10.00%   10.00% 10.00%              
Percentage Of Shares Issued To Placement Agent     10.00%   10.00% 10.00%              
Warrants Issued     6,400   853,677                
Stock Issued During Period, Shares, New Issues     64,000                    
Payments of Stock Issuance Costs     $ 42,000   $ 5,500,000                
Proceeds from Issuance of Private Placement     $ 400,000   $ 55,500,000