Quarterly report pursuant to Section 13 or 15(d)

Warrants - Additional Information (Detail)

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Warrants - Additional Information (Detail) (USD $)
1 Months Ended 6 Months Ended 9 Months Ended
Aug. 31, 2014
Jun. 30, 2013
Oct. 31, 2009
Jun. 30, 2014
Sep. 30, 2014
Sep. 30, 2013
Dec. 31, 2013
Class of Warrant or Right [Line Items]              
Warrant exercise term 5 years   5 years        
Number of common stock called by warrants 162,539 301,778 27,839       301,778
Warrants exercise price per share $ 1.00 $ 0.66 $ 0.60        
Warrants, fair value adjustment       $ 28,448 $ 28,448 $ 21,910  
Estimated Fair value of warrants 55,000            
Additional warrants issued   48,222          
2014 Private Placement [Member]
             
Class of Warrant or Right [Line Items]              
Warrant exercise term         5 years    
Number of common stock called by warrants         10,260,000    
Placement Agent Member | 2014 Private Placement [Member]
             
Class of Warrant or Right [Line Items]              
Warrant exercise term         5 years    
Number of common stock called by warrants         2,047,000    
Warrants exercise price per share         $ 1.00    
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]              
Warrant exercise term         5 years    
Number of common stock called by warrants         11,177,612    
Warrants exercise price per share         $ 1.00    
Interest Expense [Member]
             
Class of Warrant or Right [Line Items]              
Warrants, fair value adjustment     1,005        
General and Administrative Expense [Member]
             
Class of Warrant or Right [Line Items]              
Estimated Fair value of warrants   $ 21,910