Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Additional Information (Detail)

v3.5.0.2
Stockholders' Equity - Additional Information (Detail) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Jul. 15, 2016
Jul. 15, 2015
May 31, 2016
Mar. 30, 2016
Feb. 29, 2016
Feb. 23, 2016
Jan. 31, 2016
Mar. 31, 2015
Feb. 28, 2014
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                            
Stock-based compensation weighted-average vesting period                       11 days    
Employee Stock Purchase Plan to eligible employees, Reckoning fair value percentage during offering period                   85.00%   85.00%    
Employee Stock Purchase Plan to eligible employees, compensation expense recognized                   $ 30,000 $ 8,000 $ 56,000 $ 16,000  
Common Stock issued in connection with the first ESPP offering                       33,958    
Research And Development Expense                   6,347,000 2,411,000 $ 14,100,000 4,066,000  
Employee Benefits And Share Based Compensation                   3,023,000 1,925,000 $ 5,889,000 3,395,000  
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross                       0    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options                   $ 33,000   $ 33,000    
Share-based Compensation                       $ 5,889,000 3,395,000  
Stock Issued During Period, Shares, New Issues           10,000       150,556        
Stock Issued During Period, Shares, Employee Stock Purchase Plans                       33,958    
Stock Issued During Period, Value, Employee Stock Purchase Plan                       $ 81,000    
Payments of Stock Issuance Costs                   $ 49,000   49,000 0  
Stock Issued During Period, Value, New Issues                   400,000        
Long-Term Incentive Program [Member]                            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                            
Class of Warrant or Right, Outstanding   500,000                        
Weighted Market Value Percentage of Invested Capital 44.80%                          
Weighted Average Cost Percentage of Capital 30.00%                          
Capital Units, Authorized             100,000,000              
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Shares Granted             1.00%              
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost, Total   $ 2,200,000                        
Checkpoint s 2015 Incentive Plan [Member]                            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                            
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate                           1.50%
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross               1,500,000            
Checkpoint [Member] | Private Placement [Member]                            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                            
Class of Warrant or Right, Exercise Price of Warrants or Rights           $ 7.00                
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures, Total           $ 126,640                
Class of Warrant or Right, Number of Securities Called by Warrants or Rights           3,500                
Warrant Purchase Price Per Unit           $ 45,000                
Warrants Issued           44,324                
Proceeds from Issuance of Private Placement           $ 600,000                
Chief Executive Officer [Member]                            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                            
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross         1,900,000       3,900,000          
Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Incremental Compensation Cost         $ 400,000                  
Dr. Rosenwald [Member] | Long-Term Incentive Program [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             510,434              
Mr. Weiss [Member] | Long-Term Incentive Program [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, Weighted Average Grant Date Fair Value             $ 2.4              
Avenue Therapeutics, Inc. [Member]                            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                            
Employee Stock Purchase Plan to eligible employees, compensation expense recognized                   9,000   18,000    
Research And Development Expense                   4,000   9,000    
Allocated Share-based Compensation Expense                   $ 800,000   $ 1,900,000    
Weighted Market Value Percentage of Invested Capital                           44.80%
Weighted Average Cost Percentage of Capital                           30.00%
Shares Issued, Price Per Share                           $ 0.146
Employee Benefits And Share Based Compensation                     22,900   22,900  
Avenue Therapeutics, Inc. [Member] | Chief Executive Officer [Member]                            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                            
Stock Issued During Period, Shares, Issued for Services                           1,000,000
Avenue Therapeutics, Inc. [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 Rights, Percentage                           50.00%
Avenue Therapeutics, Inc. [Member] | Share-based Compensation Award, Tranche Two [Member]                            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                            
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage                           12.50%
Avenue Therapeutics, Inc. [Member] | Share-based Compensation Award, Tranche Three [Member]                            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                            
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage                           50.00%
Coronado SO Co. [Member] | Acquisition Of License [Member]                            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                            
Employee Benefits And Share Based Compensation                     200,000   200,000  
Mustang Bio, Inc [Member] | Acquisition Of License [Member]                            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                            
Employee Benefits And Share Based Compensation                     $ 100,000   $ 100,000  
Journey Medical Corporation [Member] | Employee [Member]                            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                            
Weighted Market Value Percentage of Invested Capital             44.50%              
Weighted Average Cost Percentage of Capital             30.00%              
Shares Issued, Price Per Share               $ 0.65            
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures, Total             290,000              
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate             0.00%              
Checkpoint Therapeutics, Inc [Member]                            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                            
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate                           83.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term                           5 years
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate                       1.35%    
Share Price                   $ 4.42 $ 0.065 $ 4.42 $ 0.065 $ 4.39
Fair Value Assumptions, Weighted Average Volatility Rate                         30.00%  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period                         48 months  
Weighted Average Cost Percentage of Capital               44.80%            
Fair Value Assumptions, Risk Free Interest Rate                       83.00%    
Checkpoint Therapeutics, Inc [Member] | Acquisition Of License [Member]                            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                            
Employee Benefits And Share Based Compensation                     $ 44,700   $ 44,700  
JMC [Member]                            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                            
Allocated Share-based Compensation Expense                   $ 147,000   $ 328,000    
Helocyte Inc [Member]                            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                            
Allocated Share-based Compensation Expense                   93,000   93,000    
Helocyte Inc [Member] | Consultants [Member]                            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                            
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate     68.00%                      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate     1.30%                      
Share Price     $ 0.46                      
Stock Issued During Period, Shares, Issued for Services     508,333 150,000                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period     127,084                      
Helocyte Inc [Member] | Chief Executive Officer [Member]                            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                            
Share Price       $ 0.097                    
Stock Issued During Period, Shares, Issued for Services       1,000,000                    
Share-based Compensation                   25,000   25,000    
Helocyte Inc [Member] | Non-employee [Member]                            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                            
Share-based Compensation                   68,000   68,000    
Origo Acquisition Corporation [Member]                            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                            
Sale of Stock, Number of Shares Issued in Transaction     1,020,000                      
Sale of Stock, Consideration Received on Transaction     $ 0.92                      
Research and Development Expense [Member] | Checkpoint Therapeutics, Inc [Member]                            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                            
Allocated Share-based Compensation Expense                   500,000   1,200,000    
General and Administrative Expense [Member] | Incentive Plan 2015 [Member]                            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                            
Share-based Compensation                       $ 700,000    
General and Administrative Expense [Member] | Checkpoint s 2015 Incentive Plan [Member]                            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                            
Share-based Compensation                   400,000        
Restricted Stock [Member]                            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                            
Stock-based compensation weighted-average vesting period                       2 years 4 months 24 days    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options                   6,400,000   $ 6,400,000    
Restricted Stock [Member] | Journey Medical Corporation [Member]                            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                            
Share-based Compensation                     $ 31,000   $ 66,000  
Restricted Stock Units (RSUs) [Member]                            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                            
Stock-based compensation weighted-average vesting period                       1 year 4 months 24 days    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options                   $ 1,500,000   $ 1,500,000    
Employee Stock Option [Member]                            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                            
Common Stock issued in connection with the first ESPP offering                       125,150    
Common Stock, Capital Shares Reserved for Future Issuance                   74,850   74,850    
Stock Issued During Period, Shares, Employee Stock Purchase Plans                       125,150    
Employee Stock Option [Member] | Journey Medical Corporation [Member]                            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                            
Share-based Compensation                   $ 100,000   $ 300,000