SUBSEQUENT EVENTS (Details) - shares		1 Months Ended	3 Months Ended		6 Months Ended
	Jul. 20, 2019	Jul. 31, 2019	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Subsequent Event [Line Items]
Exercise of options to common (in shares)					75,925	241
Subsequent event | Series B Preferred Stock
Subsequent Event [Line Items]
Paid-in-kind dividends, preferred stock (in shares)		55,711
Number of common shares issued for each convertible share (in shares)		55,711
Subsequent event | Common Stock
Subsequent Event [Line Items]
Paid-in-kind dividends, common stock (in shares)		153,956
Subsequent event | Series B1 Preferred Stock | Affiliated Entity
Subsequent Event [Line Items]
Paid-in-kind dividends, preferred stock (in shares)		153,956
Number of common shares issued for each convertible share (in shares)		153,956
Common Stock
Subsequent Event [Line Items]
Exercise of options to common (in shares)			75,925	241
Common Stock | Subsequent event
Subsequent Event [Line Items]
Exercise of options to common (in shares)	2,500