Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Deficit) (Details Textual)

v3.19.1
Stockholders' Equity (Deficit) (Details Textual) - USD ($)
1 Months Ended 12 Months Ended
Nov. 12, 2018
Aug. 15, 2017
Sep. 13, 2016
Feb. 17, 2018
Jun. 26, 2017
Feb. 17, 2017
Sep. 30, 2016
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Preferred Stock, Shares Authorized               2,000,000 2,000,000  
Common Stock, Shares Authorized               50,000,000 50,000,000  
Common Stock, Par or Stated Value Per Share               $ 0.0001 $ 0.0001  
Share-based Compensation               $ 1,537,000 $ 604,000  
Share Price   $ 1.85     $ 6.00          
Stock Issued During Period, Value, New Issues               $ 0 948,000  
Stock Issued During Period, Shares, New Issues             250,000      
Stock Issued During Period, Shares, Issued for Services         166,666     250,000    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross   20,000           0    
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price   $ 6.29           $ 0    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate   80.00%                
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate   1.83%                
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term   5 years                
Research and Development in Process               $ 0 $ 1,103,000  
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Exercise Price   $ 6.29                
Stock or Unit Option Plan Expense   $ 37,000                
Preferred Stock, Par or Stated Value Per Share               $ 0.0001 $ 0.0001  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage (100.00%)                  
2015 Incentive Plan [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized               2,000,000    
Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Description and Terms               10 years    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant               647,022    
Fortress Biotech, Inc [Member]                    
Stock Issued During Period, Value, Issued for Services         $ 1,000,000          
Stock Issuance Common Stock Issuable During Period, Shares       273,837   83,532        
Percentage of Diluted outstanding Equity       2.50%   2.50%        
Research and Development in Process               $ 0 $ 1,100,000 $ 49,000
Common Stock [Member]                    
Stock Issued During Period, Value, New Issues               $ 0 $ 0  
Stock Issued During Period, Shares, New Issues               273,837 241,657  
Stock Issued During Period, Shares, Issued for Services                 500,000  
Stock Issuance Common Stock Issuable During Period, Shares                 0  
AR Founders Agreement [Member]                    
Amended Founders Agreements Terms     15 years              
AR Founders Agreement [Member] | Common Stock [Member]                    
Number of shares Exchanged     2,500,000              
Fortress Notes [Member]                    
Share Price         $ 6.00          
Stock Issued During Period, Shares, New Issues         158,125          
Other Fees and Commissions, Percentage         2.50%          
IPO [Member]                    
Share Price         $ 6.00          
Stock Issued During Period, Shares, New Issues         6,325,000          
Proceeds from Issuance Initial Public Offering         $ 34,200,000          
Number of shares Exchanged         158,125          
IPO [Member] | Fortress Biotech, Inc [Member]                    
Stock Issued During Period, Value, New Issues         $ 800,000          
Stock Issued During Period, Shares, New Issues         125,000          
Over-Allotment Option [Member]                    
Stock Issued During Period, Shares, New Issues         825,000          
NSC Note [Member]                    
Conversion of Stock, Description         As a result, the Company issued warrants for 125,000 common shares with an exercise price of par value and a ten-year term. As a result of this transaction, the Company recorded the fair value of the Contingently Issuable Warrants of approximately $0.8 million as an increase to additional paid in capital on the Statement of Stockholders’ Equity (Deficit).          
West Park [Member]                    
Common Stock, Par or Stated Value Per Share         $ 4.02          
Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants         2,488          
West Park [Member] | IPO [Member]                    
Common Stock, Par or Stated Value Per Share         $ 4.02          
Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants         2,488          
Share Price         $ 6.00          
Restricted Stock [Member]                    
Share-based Compensation               $ 1,500,000 $ 600,000  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options               $ 3,300,000    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition               2 years    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value               $ 3.48    
Restricted Stock Units (RSUs) [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value               $ 3.48 $ 6.77  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value               $ 100,000 $ 33,000  
Preferred Class A [Member]                    
Preferred Stock, Shares Outstanding               250,000    
Common Stock, Par or Stated Value Per Share               $ 0.0001    
Preferred Class A [Member] | AR Founders Agreement [Member]                    
Number of shares Exchanged     250,000              
Common Class A [Member] | AR Founders Agreement [Member]                    
Number of shares Exchanged     2,300,000