Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Details Textual)

v3.7.0.1
Stockholders' Equity (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Mar. 31, 2015
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
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, Shares, Issued   18,258,575   18,258,575   17,426,876
Share-based Compensation       $ 3,361 $ 1,891  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options   $ 3,900   $ 3,900    
2015 Incentive Plan [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant   3,211,000   3,211,000    
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period       10 years    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized   5,000,000   5,000,000    
Restricted Stock [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number   2,502,438   2,502,438   2,533,063
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period       110,000    
Restricted Stock [Member] | Market Approach Valuation Method [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Weighted Market Value Percentage Of Invested Capital 44.80%          
Weighted Average Cost Percentage Of Capital 30.00%          
Share Price $ 0.065 $ 8.48   $ 8.48    
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       1.72%    
Non-vested Resricted Stock [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition       1 year 6 months    
Performance Shares [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number   333,334   333,334    
Dr. Marasco [Member] | Share-based Compensation Award, Tranche One [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 48 months          
Percentage of award vested on first anniversary date 25.00%          
Dr. Marasco [Member] | Restricted Stock [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 1,500,000          
General and Administrative Expense [Member] | Employees [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based Compensation   $ 400 $ 400 $ 900 700  
Research and Development Expense [Member] | Grant [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based Compensation   1,900 500 2,300 1,200  
Research and Development Expense [Member] | Employees [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based Compensation   $ 100 $ 0 $ 100 $ 0  
Fortress Biotech, Inc [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock Issued During Period, Shares, New Issues       721,699    
Equity Method Investment, Annual Equity Fee, Percentage   2.50%   2.50%    
Common Class A [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Common Stock, Shares Authorized   15,000,000   15,000,000    
Common Stock, Shares, Issued   7,000,000   7,000,000   7,000,000