Allowance for Possible Losses	3 Months Ended
Dec. 31, 2011
Allowance for Possible Losses
Allowance for Possible Losses	Note 6 - Allowance for Possible Losses

Includes an analysis of the loan loss allowance and a description as to how loans are evaluated for impairment.

No definition available.

Name:	brt_AllowanceForPossibleLoanLossesDisclosureTextBlock
Namespace Prefix:	brt_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration