INVESTMENT IN OIL AND GAS PROPERTIES (Details)			3 Months Ended
	Aug. 19, 2016 USD ($) km² item m	Mar. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016	Jun. 30, 2013 bbl	Jun. 30, 2010
Oil and Gas Properties:
Unproved properties excluded from amortization			$ 4,733,000
Guinea concession
Investments in oil and gas properties
Ownership interest in Guinea Concession (as a percent)	100.00%		100.00%	37.00%
Extension period for second exploration (in years)	1 year
Number of exploratory well in extension period | item	1
Depth below seabed required to be drilled of an exploration well (in meters) | m	2,500
Amount receivable, if extension well not drilled	$ 46,000,000
Eligible appraisal period	2 years
Contract area retained (in square kilometers/square miles) | km²	5,000
Notice period for termination (in days)	30 days
Mutually acceptable security	$ 5,000,000
Estimated amount to limit cost recovery to share of expenditures	150,000,000
Agreed amount in training budget	250,000
Estimated amount of unused portion of training program	$ 500,000
Capitalized costs			$ 170,000
Reserves | bbl					0
Oil and Gas Properties:
Unproved properties excluded from amortization			4,733,000
Increase in property balance resulting from capitalized cost adjustment			4,733,000
Fair value of well construction material			$ 4,400,000
Full Impairment of unproved oil and gas properties		$ 14,300,000
Guinea concession | Tullow Guinea Ltd
Investments in oil and gas properties
Ownership interest sold (as a percent)			40.00%
Guinea concession | Dana
Investments in oil and gas properties
Ownership interest in Guinea Concession (as a percent)						23.00%
Ownership interest sold (as a percent)			23.00%