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REAL ESTATE HELD FOR SALE (Details) (Kaupulehu 2007, LLLP) | Dec. 31, 2014 home
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Kaupulehu 2007, LLLP |
Real estate held for sale |
Number of luxury residences owned | 1 brn_NumberOfResidentialUnitsOwned / dei_LegalEntityAxis = brn_Kaupulehu2007LLLPMember

X
- Definition Represents the number of residential units owned. + References No definition available. + Details
Name: | brn_NumberOfResidentialUnitsOwned
Namespace Prefix: | brn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Details
Name: | us-gaap_RealEstatePropertiesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration