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INCOME TAXES (Details 2) (USD $)	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Changes in uncertain tax positions
Balance at the beginning of the period	$ 704,000us-gaap_UnrecognizedTaxBenefits	$ 722,000us-gaap_UnrecognizedTaxBenefits
Accrued interest related to tax positions taken	14,000brn_UnrecognizedTaxBenefitsDecreasesResultingFromAccruedInterestRelatedToTaxPositionsTaken	14,000brn_UnrecognizedTaxBenefitsDecreasesResultingFromAccruedInterestRelatedToTaxPositionsTaken
Translation adjustments	(58,000)us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromForeignCurrencyTranslation	(32,000)us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromForeignCurrencyTranslation
Balance at the end of the period	660,000us-gaap_UnrecognizedTaxBenefits	704,000us-gaap_UnrecognizedTaxBenefits
Amount of unrecognized tax benefits that if recognized, would impact effective tax rate	660,000us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
Accrued interest	$ 92,000us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	$ 86,000us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued

X

- Definition

Represents the amount of decrease in unrecognized tax benefits resulting from accrued interest related to tax positions taken.

+ References

No definition available.

+ Details

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- Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Unrecognized Tax Benefit

-URI http://asc.fasb.org/extlink&oid=6527854



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15A

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

+ Details

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X

- Definition

Amount of increase in unrecognized tax benefits resulting from foreign currency translation.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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X

- Definition

Amount of interest expense accrued for an underpayment of income taxes.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

+ Details

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X

- Definition

The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

+ Details

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Namespace Prefix:	us-gaap_
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