Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation - Additional Information (Detail)

v3.4.0.3
Stock-based Compensation - Additional Information (Detail) - USD ($)
1 Months Ended 3 Months Ended
Feb. 15, 2016
Mar. 16, 2015
Mar. 31, 2016
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]                      
Stock option awards             400,000       900,000
Weighted-average grant date fair value             $ 0.82       $ 1.30
Stock options vested             0        
Stock options forfeited             0        
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        
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 which 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
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 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