Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation - Additional Information (Detail)

v3.5.0.2
Stock-based Compensation - Additional Information (Detail) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended
Jun. 06, 2016
Feb. 15, 2016
Mar. 16, 2015
Mar. 31, 2015
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Jun. 30, 2016
Jun. 30, 2015
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]                            
Stock option awards             300,000       10,000   700,000 910,000
Weighted-average grant date fair value             $ 0.58       $ 0.77   $ 0.72 $ 1.29
Stock options vested                         256,667  
Stock options forfeited                         373,333  
Number of stock options, exercised                         0  
Non-employee Directors [Member]                            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]                            
Annual retainer amount for the threshold of stock precluded from selling                         $ 270,000  
Dr. Alan Joslyn [Member]                            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]                            
Stock option awards 300,000                          
Stock options vested 50,000                          
Restricted shares ending date The Company issued (i) stock options to purchase 300,000 shares of the Company's common stock at an exercise price equal to $0.55 per share which stock options shall vest in six installments of 50,000 shares each every six months after June 6, 2016, provided that he has continued his employment with the Company through such dates, and (ii) 30,000 shares of restricted stock of the Company, vesting in two installments on the six month and twelve month anniversaries of June 6, 2016.                          
Exercise price of plan $ 0.55                          
Dr. Alan Joslyn [Member] | Restricted Stock [Member]                            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]                            
Restricted shares vest in each quarter end 30,000                          
2012 Equity Incentive Plan [Member] | Chief Financial Officer [Member]                            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]                            
Stock option awards     200,000                      
Exercise price of plan     $ 1.32                      
Vesting period     3 years                      
2012 Equity Incentive Plan [Member] | Non-employee Directors [Member]                            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]                            
Stock option awards   80,000   80,000                    
Exercise price of plan   $ 0.84   $ 1.32                    
2012 Equity Incentive Plan [Member] | Non-employee Directors [Member] | Restricted Stock [Member]                            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]                            
Restricted shares awarded   40,000   40,000                    
Restricted shares ending date   Under the Company's 2012 Plan, of which 10,000 restricted shares vest at the end of each calendar quarter in 2016, provided the recipient remains a director through the vesting date.                     Under the Company's 2012 Plan, of which 10,000 restricted shares vested at the end of each calendar quarter in 2015, provided the recipient remained a director through the vesting date.  
Restricted shares vest in each quarter end             10,000 10,000 10,000 10,000 10,000 10,000 10,000  
2012 Equity Incentive Plan [Member] | Scenario, Forecast [Member] | Non-employee Directors [Member] | Restricted Stock [Member]                            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]                            
Restricted shares vest in each quarter end         10,000 10,000                
Discovery Research [Member] | 2012 Equity Incentive Plan [Member] | Senior Vice President [Member]                            
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]                            
Stock option awards     150,000                      
Exercise price of plan     $ 1.32                      
Vesting period     3 years