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PROPERTY AND EQUIPMENT (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
PROPERTY AND EQUIPMENT
Subtotal	$ 22,122us-gaap_PropertyPlantAndEquipmentGross	$ 18,443us-gaap_PropertyPlantAndEquipmentGross
Less: accumulated depreciation	(4,226)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	(3,300)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Total	17,896us-gaap_PropertyPlantAndEquipmentNet	15,143us-gaap_PropertyPlantAndEquipmentNet
Depreciation expense	979us-gaap_DepreciationDepletionAndAmortization	942us-gaap_DepreciationDepletionAndAmortization	1,033us-gaap_DepreciationDepletionAndAmortization
Trucks and trailers
PROPERTY AND EQUIPMENT
Subtotal	1,012us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_TrucksMember	1,041us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_TrucksMember
Office furniture and equipment
PROPERTY AND EQUIPMENT
Subtotal	1,404us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_FurnitureAndFixturesMember	1,163us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_FurnitureAndFixturesMember
Leasehold Improvements
PROPERTY AND EQUIPMENT
Subtotal	661us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_LeaseholdImprovementsMember
Drill rigs
PROPERTY AND EQUIPMENT
Subtotal	998us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_WellsAndRelatedEquipmentAndFacilitiesMember	998us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_WellsAndRelatedEquipmentAndFacilitiesMember
Building
PROPERTY AND EQUIPMENT
Subtotal	1,514us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_BuildingMember	1,469us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_BuildingMember
Land
PROPERTY AND EQUIPMENT
Subtotal	8,699us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_LandMember	8,672us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_LandMember
Mining equipment
PROPERTY AND EQUIPMENT
Subtotal	1,548us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_ExplorationAndProductionEquipmentMember	1,206us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_ExplorationAndProductionEquipmentMember
Construction in process
PROPERTY AND EQUIPMENT
Subtotal	$ 6,286us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_ConstructionInProgressMember	$ 3,894us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_ConstructionInProgressMember

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

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-Section S99

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

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- Definition

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229



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