Annual report pursuant to Section 13 and 15(d)

Stock Compensation Plan - Additional Information (Detail)

v3.3.1.900
Stock Compensation Plan - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares authorized under the incentive plan 4,000,000    
Shares available for future stock option 651,507    
Shares issued under incentive plan 1,877,462    
Number of stock options outstanding 1,471,031 820,865 633,840
Shares available for future issuance 2,122,538    
Expiration period 10 years    
Shares withheld to cover tax payments 0 0  
Stock-based compensation expense $ 770,704 $ 184,532  
Unrecognized compensation costs $ 563,222    
Weighted average period of stock options 1 year 3 months 18 days    
Total grant date fair value of options vested $ 325,361 $ 257,007  
Employees [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock awards to employees 0 0  
Maximum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares vesting period 3 years    
Minimum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares vesting period 2 years    
Stock Options [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense $ 770,704 $ 184,532  
Long Term Performance Based Incentive Program [Member] | 2012 Equity Incentive Plan [Member] | Non-employee Directors [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares awarded under plan   0  
Long Term Performance Based Incentive Program [Member] | 2012 Equity Incentive Plan [Member] | Executive Officer [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares awarded under plan   0