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CONSOLIDATED VARIABLE INTEREST ENTITY NARRATIVE (Details) | Dec. 31, 2022
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Variable Interest Entity [Line Items] |
Percentage of capital contributions to variable interest entity | 100.00%
Gros Ventre Partners, LLC |
Variable Interest Entity [Line Items] |
Profit sharing ratio of variable interest entity | 2.00%
Asset management fee, percent fee of cumulative capital contributions | 1.00%
BOK Drilling, LLC |
Variable Interest Entity [Line Items] |
Profit sharing ratio of variable interest entity | 98.00%

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- Definition Asset Management Fee, Percent Fee of Cumulative Capital Contributions + References No definition available. + Details
Name: | brn_AssetManagementFeePercentFeeOfCumulativeCapitalContributions
Namespace Prefix: | brn_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Percentage of Capital Contributions to Variable Interest Entity + References No definition available. + Details
Name: | brn_PercentageOfCapitalContributionsToVariableInterestEntity
Namespace Prefix: | brn_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Represents the profit sharing percentage between BOK and Gros Ventre + References No definition available. + Details
Name: | brn_ProfitSharingRatioOfVariableInterestEntity
Namespace Prefix: | brn_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_VariableInterestEntityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=brn_GrosVentrePartnersLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | dei_LegalEntityAxis=brn_BOKDrillingLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |