Quarterly report pursuant to Section 13 or 15(d)

STOCK OPTIONS - Summary of Stock Option Activity (Details)

v3.19.1
STOCK OPTIONS - Summary of Stock Option Activity (Details) - Common Stock - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Beginning Balance, number of shares 3,496,250  
Options Issued, number of shares 150,000  
Options Exercised, number of shares (98,333)  
Ending Balance, number of shares 3,547,917 3,496,250
Ending Balance, Options Exercisable 2,317,917  
Beginning Balance, Weighted-average exercise price $ 0.66  
Options Issued, Weighted-average exercise price 1.90  
Options Exercised, Weighted-average exercise price 0.37  
Ending Balance, Weighted-average exercise price 0.72 $ 0.66
Ending Balance, Options Exercisable, Weighted-average exercise price $ 0.54  
Options Outstanding, Aggregate intrinsic value $ 3,105,642 $ 2,608,329
Options Exercisable, Aggregate intrinsic value $ 2,451,150  
Weighted-average remaining contractual term (years) 2 years 11 months 4 days 3 years 14 days
Weighted-average remaining contractual term (years), Exercisable 2 years 3 months 29 days