ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES (Details) $ in Thousands	3 Months Ended
	Sep. 30, 2015 USD ($) item	Sep. 30, 2014 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES
Number of wholly-owned subsidiaries | item	2
Operating revenue	$ 0	$ 0
Costs and expenses	1,905	4,048
Cash	15,748	$ 27,255	$ 18,374	$ 35,270
Current liabilities	600
Other commitments	$ 0