Annual report pursuant to Section 13 and 15(d)

Warrants - Additional Information (Detail)

v3.3.1.900
Warrants - Additional Information (Detail) - USD ($)
 1 Months Ended 12 Months Ended
Aug. 31, 2014
Jun. 30, 2013
Dec. 31, 2015
Dec. 31, 2014
Class of Warrant or Right [Line Items]        
Issuance of common stock shares 162,539 301,778 1,969,250 33,333
Warrants, exercise price per share $ 1.00 $ 0.66    
Additional warrants issued   48,222    
Warrant exercisable term 5 years      
Weighted average exercise price of warrants     $ 0.97  
Weighted average remaining life of warrants     3 years 3 months 29 days  
Number of shares purchased for warrants exercised     11,615,674  
Net proceeds from warrants exercised     $ 10,814,125  
Number of warrants issued     0  
Number of warrants cancelled     0  
Warrant Agreement [Member]        
Class of Warrant or Right [Line Items]        
Issuance of common stock shares     255,724  
Number of shares purchased for warrants exercised     371,250  
2014 Private Placement [Member]        
Class of Warrant or Right [Line Items]        
Issuance of common stock shares     10,260,000  
Warrant exercisable term     5 years  
Placement Agent [Member] | 2014 Private Placement [Member]        
Class of Warrant or Right [Line Items]        
Issuance of common stock shares     2,047,000  
Warrants, exercise price per share     $ 1.00  
Warrant exercisable term     5 years  
Debt instrument redemption description     These warrants had a provision that permitted the Company to call and redeem the warrants after a thirty day notice period if the stock traded at $2.50 or greater on a volume weighted average basis for at least twenty consecutive trading days  
Vendor [Member]        
Class of Warrant or Right [Line Items]        
Estimated fair value of warrants $ 55,000      
Series A Convertible Preferred Stock [Member] | Investors And Former Holders Of Series A Convertible Preferred Stock [Member] | 2014 Private Placement [Member]        
Class of Warrant or Right [Line Items]        
Issuance of common stock shares     11,177,612  
Warrants, exercise price per share     $ 1.00  
Warrant exercisable term     5 years  
Minimum trading price of warrants     $ 2.50  
General and Administrative Expense [Member]        
Class of Warrant or Right [Line Items]        
Estimated fair value of warrants   $ 21,910