Quarterly report pursuant to Section 13 or 15(d)

EMPLOYEE STOCK OPTIONS AND RESTRICTED STOCK AWARD PLAN (Details Textual)

v3.8.0.1
EMPLOYEE STOCK OPTIONS AND RESTRICTED STOCK AWARD PLAN (Details Textual) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2013
Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 1,040,200      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options $ 3,257,518      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 2 years 3 months 18 days      
Share-based Compensation Arrangement by Share-based Payment Award, Per Share Weighted Average Price of Shares Purchased $ 14.35      
Compensation Expenses Charged Against Income For Share Based Awards Included In General And Administrative Expenses $ 1,081,199 $ 991,210    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized       2,500,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized     5,000,000  
Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options $ 3,879,748      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 1 year 7 months 6 days