PREFERRED STOCK - Preferred stock liquidation preference (Details) - Series A Preferred Stock - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Dec. 31, 2015	Jun. 30, 2015
Class Of Stock [Line Items]
Shares outstanding at $10.00 per share	$ 4,430	$ 4,430
Cumulative unpaid dividends	13,257	12,925
Preferred Stock liquidation preference	$ 17,687	$ 17,355