Quarterly report pursuant to Section 13 or 15(d)

Stock Options - Additional Information (Detail)

v3.4.0.3
Stock Options - Additional Information (Detail) - USD ($)
3 Months Ended
Jan. 01, 2016
Mar. 31, 2016
Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense   $ 311,238 $ 301,958
Weighted average grant-date fair value, options granted   $ 1.40  
Total unrecognized compensation expense   $ 2,128,624  
Share-based compensation expense, not yet recognized period of recognition   3 years 1 month 2 days  
2014 Incentive Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Increase in number of shares of common stock available for issuance 1,250,000    
Shares available for grant   4,624,513  
Stock Options [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense   $ 311,238 $ 301,958
Expected term in years   6 years 3 months 11 days 9 years 10 months 13 days
Stock Options [Member] | 2014 Incentive Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Aggregate common stock available for stock options granted, shares   9,916,017  
Stock option expiration period   10 years  
Expected term in years   6 years 3 months  
Condition One [Member] | 2014 Incentive Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Increases in number of shares of common stock available for issuance, minimum percentage of outstanding common stock   7.00%  
Condition Two [Member] | 2014 Incentive Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Increases in number of shares of common stock available for issuance, minimum percentage of outstanding common stock   20.00%