Annual report pursuant to Section 13 and 15(d)

Warrants - Additional Information (Detail)

v3.3.1.900
Warrants - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 17, 2014
Equity [Abstract]      
Number of common stock purchased 542,360    
Exercise price of warrants $ 2.00   $ 2.00
Warrant exercisable period 5 years    
Warrant expense recognized $ 0 $ 700,000