INVESTMENT IN OIL AND GAS PROPERTIES (Details) (USD $)	0 Months Ended			1 Months Ended	3 Months Ended	12 Months Ended			0 Months Ended	12 Months Ended	0 Months Ended		0 Months Ended	9 Months Ended		1 Months Ended	0 Months Ended			12 Months Ended		29 Months Ended			0 Months Ended	12 Months Ended
	Dec. 31, 2012	Nov. 15, 2011	Sep. 20, 2011	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2014 bbl	May 16, 2014 AGR Lawsuit	Jun. 30, 2014 AGR Lawsuit	May 16, 2014 AGR Peak Well Management Ltd AGR Lawsuit	Jun. 30, 2014 Dana	Dec. 31, 2012 Tullow Guinea Ltd	Jun. 30, 2014 Tullow Guinea Ltd	Nov. 20, 2012 Tullow Guinea Ltd	Dec. 31, 2012 Minimum Tullow Guinea Ltd m	Sep. 21, 2010 Guinea concession	Mar. 25, 2010 Guinea concession sqmi sqkm	Dec. 31, 2009 Guinea concession	Jun. 30, 2014 Guinea concession bbl	Jun. 30, 2013 Guinea concession	Jun. 30, 2014 Guinea concession bbl	Dec. 30, 2012 Guinea concession	Jun. 30, 2014 Guinea concession Dana	Mar. 25, 2010 Guinea concession Minimum m sqkm	Jun. 30, 2014 Guinea concession Minimum	Jun. 30, 2014 Guinea concession Maximum	Jun. 30, 2014 Guinea concession From 0 to 2,000	Jun. 30, 2014 Guinea concession From 0 to 2,000 Minimum	Jun. 30, 2014 Guinea concession From 0 to 2,000 Maximum	Jun. 30, 2014 Guinea concession From 2,001 to 5,000	Jun. 30, 2014 Guinea concession From 2,001 to 5,000 Minimum	Jun. 30, 2014 Guinea concession From 2,001 to 5,000 Maximum	Jun. 30, 2014 Guinea concession From 5,001 to 100,000	Jun. 30, 2014 Guinea concession From 5,001 to 100,000 Minimum	Jun. 30, 2014 Guinea concession From 5,001 to 100,000 Maximum	Jun. 30, 2014 Guinea concession Over 100,001	Jun. 30, 2014 Guinea concession Over 100,001 Minimum
Investments in oil and gas properties
Ownership interest in Guinea Concession (as a percent)												23.00%		40.00%						37.00%		37.00%	77.00%	23.00%
Contract area retained (in square kilometers/square miles)																		25,000
Contract area retained as percentage of original contract area																		30.00%
Relinquishment of contract area retained as percentage of original contract area																			70.00%
Contract area retained as percentage of original contract area, required to be relinquished under PSC																		25.00%
Extension of exploration period allowable to allow the completion of a well in process																	1 year
Extension of exploration period allowable to allow the completion of appraisal of discovery made																	2 years
Depth below seabed required to be drilled of an exploration well (in meters)																									2,500
Expenditure required on each exploration well																									$ 15,000,000
Aggregate expenditure required on exploration wells																									30,000,000
Area of 3D seismic required to be acquired (in square kilometers)																									2,000
Expenditure on acquisition of 3D seismic required to be acquired																									12,000,000
Guinea's participating interest in development of discovery as percentage of costs																									15.00%
Guinea's share of cost and profit oil (as a percent)																		62.50%
Annual training budget to be established, for the benefit of Guinea's oil industry personnel																		200,000
Annual surface tax, obligated to pay (in dollars per square kilometers)																		2.00
Royalty interest to Guinea as percentage of production																				10.00%
Percentage of revenue after royalty																				90.00%
Daily production (in barrels per day)																													0	2,000		2,001	5,000		5,001	100,000		100,001
Guinea's share in revenue, after recovery cost of operations (as a percent)																												25.00%			30.00%			41.00%			60.00%
Contractor share in revenue, after recovery cost of operations (as a percent)																												75.00%			70.00%			59.00%			40.00%
Ownership interest sold (as a percent)				40.00%									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 ultra-deepwater exploration well to be paid by Tullow as additional consideration	100,000,000													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%
Threshold gross expenditure cap for well to be paid by the entity	100,000,000
Period through which additional consideration is to be paid by Tullow													90 days
Transaction costs						3,332,000							3,300,000
Capitalized costs																					2,700,000
Reserves								0												0		0
Properties subject to the Full-Cost Ceiling Test and written-down, amount					441,000	441,000	116,312,000															116,800,000
Oil and Gas Properties:
Unproved Oil and Gas Properties						21,174,000	39,278,000	14,259,000												14,259,000	14,365,000	14,259,000
Other Equipment Costs																					6,809,000
Unproved properties not subject to amortization						21,174,000		14,259,000												14,259,000	21,174,000	14,259,000
Decrease in property balance resulting from capitalized cost adjustment																				100,000
Decrease in oil and gas property balance after reaching a lawsuit settlement									(6,800,000)	(6,800,000)	(6,800,000)
Release of previously escrowed cash									17,700,000	17,700,000
Period over which evaluation activities of unproved properties are expected to be completed																										1 year	3 years
Write-off of Prospective Investment Deposit
Payments in connection with a prospective oil and gas investment		5,000,000	5,000,000				10,000,000
Write off of investment							$ 10,000,000