Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Additional Information (Details)

v3.7.0.1
Stock-Based Compensation - Additional Information (Details)
1 Months Ended 3 Months Ended 6 Months Ended
May 31, 2014
$ / shares
shares
Jun. 30, 2017
USD ($)
shares
Jun. 30, 2016
Jun. 30, 2017
USD ($)
stock_plan
shares
Jun. 30, 2016
USD ($)
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  
Proceeds from stock options exercised   $ 4,000   $ 4,000 $ 0
Employees          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unrecognized compensation cost related to non-vested stock options granted   2,807,360   $ 2,807,360  
Unrecognized compensation cost related to non-vested stock options granted expect to recognize, period (in years)       2 years 5 months 1 day  
Non-Employee          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unrecognized compensation cost related to non-vested stock options granted   $ 47,750   $ 47,750  
Unrecognized compensation cost related to non-vested stock options granted expect to recognize, period (in years)       6 months 4 days  
Dividend yield   0.00% 0.00% 0.00% 0.00%
Director          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Issuance of shares under stock options issued (in shares) | shares 200,000        
Exercise price of options exchanged (usd per share) | $ / shares $ 15.89        
2011 Equity Incentive Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares available for future awards (in shares) | shares   681,179   681,179  
2008 Stock Option Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares available for future awards (in shares) | shares   133,214   133,214  
Stock options          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Dividend yield   0.00%   0.00%  
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)       1 year 6 months 11 days  
Unrecognized compensation cost   $ 331,076   $ 331,076