SUBSEQUENT EVENTS - Preferred Stock shares in-Kind (Details) - shares		1 Months Ended	12 Months Ended
	Dec. 31, 2016	Jan. 31, 2017	Dec. 31, 2016
Series B-1 Preferred Stock
Subsequent Event [Line Items]
Conversion of stock, shares issued if converted (shares)	12,285,875
Series B-1 Preferred Stock | Subsequent event
Subsequent Event [Line Items]
Conversion of stock, shares issued if converted (shares)		184,297
Series B Preferred Stock
Subsequent Event [Line Items]
Conversion of stock, shares issued if converted (shares)	3,229,409
Series B Preferred Stock | Subsequent event
Subsequent Event [Line Items]
Conversion of stock, shares issued if converted (shares)		48,447
Restricted stock | Series B-1 Preferred Stock
Subsequent Event [Line Items]
Preferred stock dividends, shares			282,172
Restricted stock | Series B-1 Preferred Stock | Subsequent event
Subsequent Event [Line Items]
Preferred stock dividends, shares		184,297
Restricted stock | Series B Preferred Stock
Subsequent Event [Line Items]
Preferred stock dividends, shares			263,087
Restricted stock | Series B Preferred Stock | Subsequent event
Subsequent Event [Line Items]
Preferred stock dividends, shares		48,447