NET LOSS PER SHARE - Antidilutive Securities (Details) - shares	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total shares	388,534	307,881
Restricted stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total shares	317,502	174,541
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total shares	70,628	114,774
Warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total shares	404	18,566