Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Additional Information (Detail)

v3.5.0.2
Stock-Based Compensation - Additional Information (Detail)
1 Months Ended 6 Months Ended
May 31, 2014
$ / shares
shares
Jun. 30, 2016
USD ($)
stock_plan
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of equity incentive plans | stock_plan   2
Options granted maximum exercisable period (up to)   10 years
Stock appreciation rights   0
Restricted stock awarded   275,500
Employees    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Unrecognized compensation cost related to non-vested stock options granted | $   $ 3,639,078
Unrecognized compensation cost related to non-vested stock options granted expect to recognize, period (in years)   2 years 7 months 10 days
Non-Employee    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Unrecognized compensation cost related to non-vested stock options granted | $   $ 57,000
Unrecognized compensation cost related to non-vested stock options granted expect to recognize, period (in years)   1 year 6 months 4 days
Director    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Issuance of shares under stock options issued 200,000  
Exercise price of options exchanged | $ / shares $ 15.89  
2011 Equity Incentive Plan    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares available for future awards   921,276
2008 Stock Option Plan    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares available for future awards   112,055
Restricted shares of common stock    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Unrecognized compensation cost related to non-vested stock options granted expect to recognize, period (in years)   2 years 1 month 13 days
Unrecognized compensation cost | $   $ 543,734