Quarterly report pursuant to Section 13 or 15(d)

Subsequent Event - Additional Information (Detail)

v3.5.0.2
Subsequent Event - Additional Information (Detail) - Stock Options - Vice Presidents - $ / shares
Oct. 03, 2016
Sep. 15, 2016
Apr. 18, 2016
Subsequent Event [Line Items]      
Stock options granted   250,000 325,000
Award issued per share   $ 1.78 $ 1.43
Options expiration period   10 years 10 years
Share Based Compensation Arrangement By Share Based Payment Award, Vesting Commencement Date   Sep. 15, 2017 Apr. 18, 2017
Percentage of time based vesting for options   75.00% 75.00%
Share-based Compensation Arrangement by Share-based Payment Award, Monthly Ratable Award Vesting Period   36 months 36 months
Subsequent Event      
Subsequent Event [Line Items]      
Stock options granted 125,000    
Award issued per share $ 1.72    
Options expiration period 10 years    
Share Based Compensation Arrangement By Share Based Payment Award, Vesting Commencement Date Oct. 03, 2017    
Percentage of performance based vesting in options granted 50.00%    
Subsequent Event | Awards Vesting on October 3, 2017      
Subsequent Event [Line Items]      
Vesting percentage 25.00%    
Subsequent Event | Time Based Vesting Commencing October 3, 2017      
Subsequent Event [Line Items]      
Percentage of time based vesting for options 75.00%    
Share-based Compensation Arrangement by Share-based Payment Award, Monthly Ratable Award Vesting Period 36 months