Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events - Additional Information (Detail)

v3.8.0.1
Subsequent Events - Additional Information (Detail) - USD ($)
 1 Months Ended 6 Months Ended 12 Months Ended
Jan. 01, 2018
Dec. 31, 2017
Dec. 29, 2017
Dec. 21, 2017
Oct. 11, 2017
Sep. 08, 2017
Feb. 28, 2017
Jan. 31, 2017
Dec. 20, 2017
Sep. 30, 2016
Nov. 30, 2017
May 31, 2017
Nov. 24, 2017
Offer to Amend and Exercise                          
Subsequent Event [Line Items]                          
Warrants to purchase common shares, shares                         51,090,113
Class of warrants, exercise price                         $ 0.50
Placement Agent                          
Subsequent Event [Line Items]                          
Warrants to purchase common shares, shares         150,461 213,573 453,652 122,799   1,066,667 350,766    
Class of warrants, exercise price         $ 0.715 $ 0.825 $ 0.825 $ 0.825   $ 0.825 $ 0.825    
Term of warrants         5 years 5 years 5 years 5 years   5 years 5 years    
Percentage of shares, issued as warrants         8.00% 8.00% 8.00% 8.00%   8.00%      
Private Equity Offering                          
Subsequent Event [Line Items]                          
Purchase price, per share                     $ 0.50    
Warrant covering common stock shares purchased, percentage                     100.00% 25.00%  
Common stock sold at private equity offering                     6,651,800 729,500  
Proceeds from private equity offering                     $ 3,325,900 $ 729,500  
Warrants to purchase common shares, shares                     6,651,800    
Class of warrants, exercise price                     $ 0.75 $ 1.00  
Term of warrants                     5 years 5 years  
Private Equity Offering | Placement Agent                          
Subsequent Event [Line Items]                          
Warrants to purchase common shares, shares                     452,180    
Class of warrants, exercise price                     $ 0.55    
Term of warrants                     5 years    
Subsequent Event | Corporate Tax                          
Subsequent Event [Line Items]                          
Corporate tax rate 21.00% 35.00%                      
Subsequent Event | Offer to Amend and Exercise                          
Subsequent Event [Line Items]                          
Class of warrant or right expiration date       Jan. 26, 2018                  
Subsequent Event | Private Equity Offering                          
Subsequent Event [Line Items]                          
Purchase price, per share     $ 0.50           $ 0.50        
Warrant covering common stock shares purchased, percentage     100.00%           100.00%        
Common stock sold at private equity offering     1,777,638           2,948,666        
Proceeds from private equity offering     $ 900,000           $ 1,500,000        
Warrants to purchase common shares, shares     1,777,638           2,948,666        
Class of warrants, exercise price     $ 0.75           $ 0.75        
Term of warrants     5 years           5 years        
Subsequent Event | Private Equity Offering | Placement Agent                          
Subsequent Event [Line Items]                          
Warrants to purchase common shares, shares     177,764           243,667        
Class of warrants, exercise price     $ 0.55           $ 0.55        
Percentage of shares, issued as warrants     10.00%           10.00%