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v2.4.1.9

INCENTIVE COMPENSATION PLAN (Details) (USD $) | 12 Months Ended
--- | ---
Sep. 30, 2014 | Sep. 30, 2013
INCENTIVE COMPENSATION PLAN |  |
Costs recognized pursuant to plan | $ 0 brn_IncentiveCompensationPlanCompensationExpense | $ 30,000 brn_IncentiveCompensationPlanCompensationExpense
Amounts accrued under the plan | $ 68,000 brn_IncentiveCompensationPlanRecordedLiability | $ 404,000 brn_IncentiveCompensationPlanRecordedLiability

X
- Definition The compensation expense recognized during the period under an incentive compensation arrangement. + References No definition available. + Details
Name: | brn_IncentiveCompensationPlanCompensationExpense
Namespace Prefix: | brn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | brn_IncentiveCompensationPlanDisclosureAbstract
Namespace Prefix: | brn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The carrying amount of the liability as of the balance sheet date under an incentive compensation arrangement. + References No definition available. + Details
Name: | brn_IncentiveCompensationPlanRecordedLiability
Namespace Prefix: | brn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant