INVESTMENT IN OIL AND GAS PROPERTIES (Details) (USD $)	0 Months Ended	3 Months Ended						1 Months Ended		3 Months Ended		12 Months Ended			3 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Sep. 30, 2013	Jun. 30, 2013	Jun. 30, 2013 Dana	Sep. 30, 2013 Tullow Guinea Ltd	Nov. 21, 2012 Tullow Guinea Ltd	Dec. 31, 2012 SCS	Dec. 31, 2012 Minimum SCS m	Sep. 30, 2013 Guinea concession bbl	Sep. 30, 2012 Guinea concession	Jun. 30, 2012 Guinea concession	Jun. 30, 2013 Guinea concession	Dec. 30, 2012 Guinea concession	Sep. 30, 2013 Guinea concession Maximum	Sep. 30, 2013 Guinea concession Minimum
Investments in oil and gas properties
Ownership interest in Guinea Concession (as a percent)					23.00%	40.00%				37.00%				77.00%
Capitalized costs											$ 1,100,000
Reserves										0
Oil and Gas Properties:
Proved Oil and Gas Properties			116,753,000	116,753,000						116,753,000			116,753,000
Unproved Oil and Gas Properties										14,076,000			14,365,000
Other Equipment Costs										6,809,000			6,809,000
Total oil and gas properties			137,638,000	137,927,000						137,638,000			137,927,000
Less- accumulated depreciation, depletion and amortization			(116,753,000)	(116,753,000)						(116,753,000)			(116,753,000)
Unevaluated properties excluded from amortization			20,885,000	21,174,000						20,885,000			21,174,000
Period over which evaluation activities of unproved properties are expected to be completed															3 years	1 year
Full amortization of proved oil and gas properties		441,000										116,300,000
Decrease in property balance resulting from capitalized cost adjustment										300,000
Ownership interest sold (as a percent)								40.00%
Consideration of sale of interest in PSC								27,000,000
Depth of exploration well to be drilled									2,000
Gross expenditure for an exploration well to be paid by Tullow as additional consideration								100,000,000
Gross expenditure for an appraisal well to be paid by Tullow as additional consideration								100,000,000
Percentage of participating interest share of costs associated with the concession obligated to be paid							40.00%
Period through which additional consideration is to be paid by Tullow								90 days
Threshold gross expenditure cap for well to be paid by the entity	100,000,000
Transaction costs								$ 3,300,000