EARNINGS PER SHARE - Narrative (Details) - shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Options to purchase (in shares)	4,418,250	3,460,750
Warrants to purchase (in shares)	8,633,188	7,353,056
Series B Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Conversion of stock, common shares issued if converted (in shares)	3,826,055	3,604,827
Series B1 Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Conversion of stock, common shares issued if converted (in shares)	9,028,085	10,057,597
Series A Preferred
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Conversion of stock, common shares issued if converted (in shares)	419,859