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INCOME TAXES (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2015
Mar. 31, 2014
Components of income (loss) before income taxes, after adjusting the income (loss) for non-controlling interests        
United States $ (179)brn_IncomeLossFromContinuingOperationsBeforeIncomeTaxesAndAfterAdjustingIncomeLossForNoncontrollingInterestsDomestic $ (1,389)brn_IncomeLossFromContinuingOperationsBeforeIncomeTaxesAndAfterAdjustingIncomeLossForNoncontrollingInterestsDomestic $ (415)brn_IncomeLossFromContinuingOperationsBeforeIncomeTaxesAndAfterAdjustingIncomeLossForNoncontrollingInterestsDomestic $ (2,239)brn_IncomeLossFromContinuingOperationsBeforeIncomeTaxesAndAfterAdjustingIncomeLossForNoncontrollingInterestsDomestic
Canada (1,449)brn_IncomeLossFromContinuingOperationsBeforeIncomeTaxesAndAfterAdjustingIncomeLossForNoncontrollingInterestsForeign 1,617brn_IncomeLossFromContinuingOperationsBeforeIncomeTaxesAndAfterAdjustingIncomeLossForNoncontrollingInterestsForeign (1,769)brn_IncomeLossFromContinuingOperationsBeforeIncomeTaxesAndAfterAdjustingIncomeLossForNoncontrollingInterestsForeign 1,416brn_IncomeLossFromContinuingOperationsBeforeIncomeTaxesAndAfterAdjustingIncomeLossForNoncontrollingInterestsForeign
Total (1,628)brn_IncomeLossFromContinuingOperationsBeforeIncomeTaxesAndAfterAdjustingIncomeLossForNoncontrollingInterests 228brn_IncomeLossFromContinuingOperationsBeforeIncomeTaxesAndAfterAdjustingIncomeLossForNoncontrollingInterests (2,184)brn_IncomeLossFromContinuingOperationsBeforeIncomeTaxesAndAfterAdjustingIncomeLossForNoncontrollingInterests (823)brn_IncomeLossFromContinuingOperationsBeforeIncomeTaxesAndAfterAdjustingIncomeLossForNoncontrollingInterests
Components of the income tax provision (benefit)        
Current (350)us-gaap_CurrentIncomeTaxExpenseBenefit 672us-gaap_CurrentIncomeTaxExpenseBenefit (347)us-gaap_CurrentIncomeTaxExpenseBenefit 543us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred 739us-gaap_DeferredIncomeTaxExpenseBenefit (159)us-gaap_DeferredIncomeTaxExpenseBenefit 647us-gaap_DeferredIncomeTaxExpenseBenefit (92)us-gaap_DeferredIncomeTaxExpenseBenefit
Total 389us-gaap_IncomeTaxExpenseBenefit 513us-gaap_IncomeTaxExpenseBenefit 300us-gaap_IncomeTaxExpenseBenefit 451us-gaap_IncomeTaxExpenseBenefit
Foreign Tax Authority        
Components of the income tax provision (benefit)        
Increase in valuation allowance, amount $ 785us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_ForeignCountryMember