XML 79 R68.htm IDEA: XBRL DOCUMENT
v3.25.2

SUBSEQUENT EVENTS (Details) - USD ($) $ in Thousands |  |  |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | --- | ---
Aug. 13, 2025 | Aug. 08, 2025 | Mar. 14, 2025 | Sep. 30, 2025 | Jun. 30, 2025 | Jun. 30, 2024
Subsequent Event [Line Items] |  |  |  |  |  |
Proceeds from the sale of oil and natural gas assets |  |  |  |  | $ 282 | $ 451
Discontinued Operations, Disposed of by Sale | Water Resources | Promissory Note |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Promissory note, interest rate |  |  | 0.00% |  |  |
Discontinued Operations, Disposed of by Sale | Water Resources | Promissory Note | Triggering Event Due August 15, 2025 |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Principal payments on promissory note |  |  | $ 150 |  |  |
Discontinued Operations, Disposed of by Sale | Water Resources | Promissory Note | Triggering Event Due September 15, 2025 |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Principal payments on promissory note |  |  | $ 150 |  |  |
United States | Forecast |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Loss on sale of oil and natural gas assets |  |  |  | $ 700 |  |
Subsequent Event | Discontinued Operations, Disposed of by Sale | Water Resources | Promissory Note | Triggering Event Due August 15, 2025 |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Promissory note, interest rate | 12.00% |  |  |  |  |
Subsequent Event | Discontinued Operations, Disposed of by Sale | Water Resources | Promissory Note | Triggering Event Due December 15, 2025 |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Principal payments on promissory note | $ 100 |  |  |  |  |
Promissory note, interest rate | 18.00% |  |  |  |  |
Subsequent Event | Discontinued Operations, Disposed of by Sale | Water Resources | Promissory Note | Triggering Event Due February 15, 2026 |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Principal payments on promissory note | $ 50 |  |  |  |  |
Subsequent Event | Discontinued Operations, Disposed of by Sale | Water Resources | Promissory Note | Triggering Event Due March 15, 2026 |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Principal payments on promissory note | $ 150 |  |  |  |  |
Subsequent Event | United States |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Proceeds from the sale of oil and natural gas assets |  | $ 2,300 |  |  |  |

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)(a)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of the required periodic payments applied to principal. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_DebtInstrumentPeriodicPaymentPrincipal
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of gain (loss) on sale or disposal of proven and unproven oil and gas properties. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_GainLossOnSaleOfOilAndGasProperty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash inflow to dispose of long-lived, physical assets and mineral interests in oil and gas properties used for normal oil and gas operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 12 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-12 + Details
Name: | us-gaap_ProceedsFromSaleOfOilAndGasPropertyAndEquipment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481674/830-30-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 855 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483399/855-10-50-2 + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DisposalGroupClassificationAxis=us-gaap_DiscontinuedOperationsDisposedOfBySaleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=brn_WaterResourcesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShortTermDebtTypeAxis=brn_PromissoryNoteMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | brn_TriggeringEventAxis=brn_TriggeringEventDueAugust152025Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | brn_TriggeringEventAxis=brn_TriggeringEventDueSeptember152025Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | brn_TriggeringEventAxis=brn_TriggeringEventDueDecember152025Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | brn_TriggeringEventAxis=brn_TriggeringEventDueFebruary152026Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | brn_TriggeringEventAxis=brn_TriggeringEventDueMarch152026Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |