Quarterly report pursuant to Section 13 or 15(d)

Stock Option Plans (Additional Information) (Detail)

v3.7.0.1
Stock Option Plans (Additional Information) (Detail) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]    
Exercisable Options Outstanding Shares 624,032  
Weighted average exercise price per share $ 4.75  
Unvested Options Outstanding, Shares 417,647  
Unvested Options Outstanding, Weighted average exercise price $ 4.73  
Unvested Options Outstanding Weighted average remaining life (yrs) 8 years 2 months 12 days  
Weighted average remaining contractual term on unvested options 6 years 10 months 24 days  
Unrecognized stock compensation expense $ 1,870,106  
Weighted average recognition period 2 years 4 months 24 days  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term 7 years 4 months 24 days 7 years 7 months 6 days