Quarterly report pursuant to Section 13 or 15(d)

STOCK-BASED COMPENSATION - Stock Option Activity (Details)

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STOCK-BASED COMPENSATION - Stock Option Activity (Details) - Stock Option Activity [Member] - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2020
Dec. 31, 2019
Jun. 30, 2020
Jun. 30, 2020
Share-based Compensation, Stock Options, Activity [Line Items]        
Outstanding - Number of Shares Issuable Upon Exercise of Outstanding Options       610,714
Granted - Number of Shares Issuable Upon Exercise of Outstanding Options       553,750
Forfeited - Number of Shares Issuable Upon Exercise of Outstanding Options     (80,000)  
Outstanding - Number of Shares Issuable Upon Exercise of Outstanding Options 1,084,464 610,714 1,084,464 1,084,464
Exercisable - Number of Shares Issuable Upon Exercise of Outstanding Options 375,658   375,658 375,658
Unvested - Number of Shares Issuable Upon Exercise of Outstanding Options 708,806   708,806 708,806
Outstanding - Weighted Average Exercise Price (in dollars per share)       $ 6.78
Granted - Weighted Average Exercise Price (in dollars per share)       1.92
Forfeited - Weighted Average Exercise Price (in dollars per share)     $ 2.46  
Outstanding - Weighted Average Exercise Price (in dollars per share) $ 4.62 $ 6.78 4.62 4.62
Exercisable - Weighted Average Exercise Price (in dollars per share) 9.55   9.55 9.55
Unvested - Weighted Average Exercise Price (in dollars per share) $ 2.00   $ 2.00 $ 2.00
Outstanding - Weighted Average Remaining Contracted Term in Years 8 years 11 months 27 days 8 years 9 months 29 days    
Exercisable - Weighted Average Remaining Contracted Term in Years 8 years 1 month 6 days      
Unvested - Weighted Average Remaining Contracted Term in Years 9 years 5 months 16 days      
Outstanding - Aggregate Intrinsic Value $ 0 $ 34,750 $ 0 $ 0
Exercisable - Aggregate Intrinsic Value (in dollars) $ 0   $ 0 $ 0