Stockholders' Equity - Additional Information (Detail) - USD ($)
1 Months Ended 12 Months Ended
Jul. 01, 2016
Aug. 31, 2015
Aug. 31, 2014
Dec. 31, 2016
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Option outstanding under 2009 stock incentive plan       650,000  
Total stock based compensation expense related to Restricted Stock Units and stock options       $ 3,563,675 $ 1,721,485
Warrant share, issued       53,093,902 0
Number of outstanding common stock warrants       56,685,805  
Weighted average exercise price of outstanding common stock warrants       $ 0.11  
Weighted average remaining life of outstanding common stock warrants       3 years 11 months 27 days  
Board Members and Officers [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock options granted during the period       650,000  
Stock options exercise price       $ 0.24  
Restricted Stock Units (RSUs) [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
RSUs issued to Chief Financial Officer   1,600,000      
Options granted vesting period   3 years      
Total stock based compensation expense related to Restricted Stock Units and stock options       $ 3,563,675 $ 1,721,485
Unamortized stock-based compensation cost related to unpaid RSUs       $ 1,800,000  
Restricted Stock Units (RSUs) [Member] | CEO [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
RSUs issued to Chief Financial Officer     7,000,000    
RSUs vesting percentage     50.00%    
Restricted Stock Units (RSUs) [Member] | Board of Directors and Management [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
RSUs issued to Chief Financial Officer   2,350,000      
Restricted Stock Units (RSUs) [Member] | Management [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
RSUs issued to Chief Financial Officer   750,000      
Restricted Stock Units (RSUs) [Member] | Board Members, Company Secretary and Chief Compliance Officer [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Restricted stock units granted during the period 650,000        
Stock options granted during the period 650,000        
Stock options exercise price $ 0.24        
Employee Stock Option [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Options granted vesting period       3 years  
Period during which options are exercisable       10 years  
Employee Stock Option [Member] | More Than 10% Common Stock Owners [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Exercise price as percentage of fair market value of shares       110.00%  
Minimum percentage of the company's voting stock ownership for 110% exercise price of stock options       10.00%  
Employee Stock Option [Member] | Minimum [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Exercise price as percentage of fair market value of shares       100.00%  
Employee Stock Option [Member] | Maximum [Member] | More Than 10% Common Stock Owners [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Period during which options are exercisable       5 years  
2009 Stock Incentive Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Option outstanding under 2009 stock incentive plan       0  
Equity Incentive Plan [Member] | 2014 [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares authorized to be issued under Equity Incentive Plan       32,583,475  
Equity Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | 2014 [Member] | CEO [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Restricted stock units granted during the period       15,041,738  
Equity Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | 2014 [Member] | Board Members and Officers [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Restricted stock units granted during the period       1,500,000