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ACQUISITION OF OIL AND NATURAL GAS PROPERTIES (Detail) (Oil and natural gas properties, Progress area of Alberta, USD $)
In Thousands, unless otherwise specified
0 Months Ended
Nov. 13, 2014
Nov. 13, 2014
Oil and natural gas properties | Progress area of Alberta
   
Oil and natural gas properties    
Purchase or sales price $ 526us-gaap_SignificantAcquisitionsAndDisposalsAcquisitionCostsOrSaleProceeds
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_OilAndGasPropertiesMember
/ us-gaap_StatementGeographicalAxis
= brn_ProgressAreaOfAlbertaMember
$ 526us-gaap_SignificantAcquisitionsAndDisposalsAcquisitionCostsOrSaleProceeds
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_OilAndGasPropertiesMember
/ us-gaap_StatementGeographicalAxis
= brn_ProgressAreaOfAlbertaMember
Period after closing of agreement for final determination of the customary adjustments to the purchase price 180 days  
Allocation of the purchase price to the assets acquired and liabilities assumed    
Property and equipment 751us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_OilAndGasPropertiesMember
/ us-gaap_StatementGeographicalAxis
= brn_ProgressAreaOfAlbertaMember
751us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_OilAndGasPropertiesMember
/ us-gaap_StatementGeographicalAxis
= brn_ProgressAreaOfAlbertaMember
Asset retirement obligation (225)brn_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetRetirementObligation
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_OilAndGasPropertiesMember
/ us-gaap_StatementGeographicalAxis
= brn_ProgressAreaOfAlbertaMember
(225)brn_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetRetirementObligation
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_OilAndGasPropertiesMember
/ us-gaap_StatementGeographicalAxis
= brn_ProgressAreaOfAlbertaMember
Net identifiable assets acquired $ 526us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_OilAndGasPropertiesMember
/ us-gaap_StatementGeographicalAxis
= brn_ProgressAreaOfAlbertaMember
$ 526us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_OilAndGasPropertiesMember
/ us-gaap_StatementGeographicalAxis
= brn_ProgressAreaOfAlbertaMember