XML 119 R115.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Condensed Financial Information (Parent Company Only) (Details Textual) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 Affiliate | Dec. 31, 2011
Condensed Financial Information (Parent Company Only) (Textual) |  |
Number of affiliates whose transaction offset in the Parent Company financial statements | 2 |
Related party transaction, amounts of transaction |  | $ 0.31
Reduction in income due to transfer of asset between two affiliates | $ 0.14 |

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

X
- Definition Number of affiliates. + References No definition available. + Details
Name: | rbnf_NumberOfAffiliates
Namespace Prefix: | rbnf_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Reduction in income due to transfer of asset between two affiliates. + References No definition available. + Details
Name: | rbnf_ReductionInIncomeDueToTransferOfAssetBetweenTwoAffiliates
Namespace Prefix: | rbnf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of transactions with related party during the financial reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39622-107864 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 57 -Paragraph 2 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_RelatedPartyTransactionAmountsOfTransaction
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration