Quarterly report pursuant to Section 13 or 15(d)

Common Stock - Additional Information (Detail)

v3.4.0.3
Common Stock - Additional Information (Detail) - 2012 Equity Incentive Plan [Member] - Restricted Stock [Member] - USD ($)
 1 Months Ended 3 Months Ended
Feb. 15, 2016
Mar. 31, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Class of Stock [Line Items]              
Unrecognized compensation expense   $ 126,000 $ 126,000        
Non-employee Directors [Member]              
Class of Stock [Line Items]              
Restricted shares awarded to each non-employee director 40,000 40,000          
Restricted shares vested for each non-employee director     10,000 10,000 10,000 10,000 10,000