Quarterly report pursuant to Section 13 or 15(d)

STOCK-BASED COMPENSATION (Details Textual)

v3.19.1
STOCK-BASED COMPENSATION (Details Textual) - USD ($)
1 Months Ended 3 Months Ended 12 Months Ended
Oct. 12, 2018
Jan. 17, 2019
Mar. 31, 2019
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 167,430 118,750    
Employee Service Share Based Compensation Nonvested Total Compensation In Current Year     $ 367,853  
Employee Service Share Based Compensation Nonvested Total Compensation In Year Two     54,689  
Employee Service Share Based Compensation Nonvested Total Compensation In Year Three     3,171  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized     $ 425,713  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value     $ 31.74  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number     4.12  
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price $ 2.61 $ 1.99    
Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value     $ 0  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period     0  
Restricted Stock [Member] | Stock Incentive Plan 2015 [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value     $ 20.96  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period       46,000
Employee [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Annual Forfeiture Rate Percentage     2.00%