Quarterly report pursuant to Section 13 or 15(d)

STOCK-BASED COMPENSATION - Stock Option Activity (Details)

v3.19.3
STOCK-BASED COMPENSATION - Stock Option Activity (Details) - USD ($)
1 Months Ended 9 Months Ended 12 Months Ended
Oct. 12, 2018
Jan. 17, 2019
Sep. 30, 2019
Dec. 31, 2018
Share-based Compensation, Stock Options, Activity [Line Items]        
Granted - Weighted Average Exercise Price (in dollars per share) $ 2.61 $ 1.99    
Stock Option Activity [Member]        
Share-based Compensation, Stock Options, Activity [Line Items]        
Outstanding - Number of Shares Issuable Upon Exercise of Outstanding Options   232,343 232,343  
Granted - Number of Shares Issuable Upon Exercise of Outstanding Options     411,930  
Expired- Number of Shares Issuable Upon Exercise of Outstanding Options     0  
Forfeited - Number of Shares Issuable Upon Exercise of Outstanding Options     (33,559)  
Outstanding - Number of Shares Issuable Upon Exercise of Outstanding Options     610,714 232,343
Exercisable - Number of Shares Issuable Upon Exercise of Outstanding Options     118,515  
Unvested - Number of Shares Issuable Upon Exercise of Outstanding Options     492,199  
Outstanding - Weighted Average Exercise Price (in dollars per share)   $ 14.37 $ 14.37  
Granted - Weighted Average Exercise Price (in dollars per share)     2.33  
Expired- Weighted Average Exercise Price (in dollars per share)     0  
Forfeited - Weighted Average Exercise Price (in dollars per share)     4.78  
Outstanding - Weighted Average Exercise Price (in dollars per share)     6.78 $ 14.37
Exercisable - Weighted Average Exercise Price (in dollars per share)     24.72  
Unvested - Weighted Average Exercise Price (in dollars per share)     $ 2.45  
Outstanding - Weighted Average Remaining Contracted Term in Years     9 years 29 days 9 years 3 months 18 days
Exercisable - Weighted Average Remaining Contracted Term in Years     8 years 1 month 21 days  
Unvested - Weighted Average Remaining Contracted Term in Years     9 years 3 months 22 days  
Outstanding - Aggregate Intrinsic Value     $ 0 $ 0
Exercisable - Aggregate Intrinsic Value (in dollars)     0  
Unvested - Aggregate Intrinsic Value (in dollars)     $ 1,188