Quarterly report pursuant to Section 13 or 15(d)

Warrants - Additional Information (Detail)

v3.4.0.3
Warrants - Additional Information (Detail) - $ / shares
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Class of Warrant or Right [Line Items]    
Issuance of common stock shares 1,967,375  
Weighted average exercise price of warrants $ 0.97  
Weighted average remaining life of warrants 3 years 1 month 6 days  
Number of warrants issued 0 0
Number of warrants cancelled 0 0
Warrant Agreement [Member]    
Class of Warrant or Right [Line Items]    
Issuance of common stock shares 693  
Number of shares purchased for warrants exercised 1,875 62,129