No definition available.

Name:	brn_LineOfCreditFacilityConversionRepaymentPercentageAbstract
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- Definition

Represents the percentage of outstanding loan balance to be repaid in final quarter of second year of the term period if the facility is converted to a two-year term loan subject to annual review under the financing agreement.

+ References

No definition available.

+ Details

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- Definition

Represents the percentage of outstanding loan balance to be repaid per quarter for first three quarters in second year of the term period if the facility is converted to a two-year term loan subject to annual review under the financing agreement.

+ References

No definition available.

+ Details

Name:	brn_LineOfCreditFacilityConversionRepaymentPercentagePerQuarterForFirstThreeQuartersOfYearTwo
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- Definition

Represents the percentage of outstanding loan balance to be repaid per quarter in first year of the term period if the facility is converted to a two-year term loan subject to annual review under the financing agreement.

+ References

No definition available.

+ Details

Name:	brn_LineOfCreditFacilityConversionRepaymentPercentagePerQuarterYearOne
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- Definition

Represents the percentage of outstanding loan balance to be repaid in first year of the term period if the facility is converted to a two-year term loan subject to annual review under the financing agreement.

+ References

No definition available.

+ Details

Name:	brn_LineOfCreditFacilityConversionRepaymentPercentageYearOne
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- Definition

Represents the percentage of outstanding loan balance to be repaid in second year of the term period if the facility is converted to a two-year term loan subject to annual review under the financing agreement.

+ References

No definition available.

+ Details

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- Definition

Represents the term loan period into which the line of credit facility will be converted if term date is not extended upon annual review.

+ References

No definition available.

+ Details

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- Definition

Represents the period for which no debt repayments are required if the facility is renewed subject to annual review under the financing agreement.

+ References

No definition available.

+ Details

Name:	brn_LineOfCreditFacilityRenewalPeriodWithNoRequiredDebtRepayments
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- Definition

Line of Credit Facility, Standby Fee, Percentage

+ References

No definition available.

+ Details

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

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- References

No definition available.

+ Details

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.16)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 20, 22
-Article 5

+ Details

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Balance Type:	credit
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- Definition

Cash and investments whose use in whole or in part is restricted for the long-term, generally by contractual agreements or regulatory requirements. For use in an unclassified balance sheet.

+ References

No definition available.

+ Details

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LONG-TERM DEBT (Details) CAD in Thousands, $ in Thousands	3 Months Ended
LONG-TERM DEBT (Details) CAD in Thousands, $ in Thousands	Dec. 31, 2015 CAD	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)
Canadian revolving credit facility
Long-term debt, additional disclosures
Long-term debt		$ 0	$ 0
Maximum borrowing capacity	CAD 1,000	723
Letters of Credit Outstanding, Amount		33
Standby fee (as a percent)	0.625%
Renewal period with no required debt repayments	1 year
Period of term loan if credit facility term date is not extended	2 years
Repayment schedule if the facility is converted to a two-year term loan
Percentage of outstanding loan balance to be repaid in first year of the term period	20.00%
Percentage of outstanding loan balance to be repaid per quarter in first year of the term period	5.00%
Percentage of outstanding loan balance to be repaid in second year of the term period	80.00%
Percentage of outstanding loan balance to be repaid per quarter for first three quarters in second year of the term period	5.00%
Percentage of outstanding loan balance to be repaid in the final quarter of the second year of the term period	65.00%
Canadian revolving credit facility \| London Interbank Offered Rate (LIBOR)
Long-term debt, additional disclosures
Basis spread on variable rate (as a percent)	2.50%
Canadian revolving credit facility \| Base Rate
Long-term debt, additional disclosures
Basis spread on variable rate (as a percent)	1.50%
Canadian revolving credit facility \| Prime Rate
Long-term debt, additional disclosures
Basis spread on variable rate (as a percent)	1.50%
Real estate loan
Long-term debt, additional disclosures
Long-term debt		$ 3,440	3,440
Interest rate (as a percent)	3.59%	3.59%
Restricted Cash and Investments		$ 212	$ 242