XML 49 R42.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Fair Value of Assets and Liabilities (Details 2) (USD $) In Thousands, unless otherwise specified | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2013 | Dec. 31, 2012
Collateral-dependent impaired loans [Member] |  |
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | $ 1,632 | $ 2,227
Fair Value Measurements, Valuation Technique | Market comparable properties | Market comparable properties
Fair Value Measurements, Unobservable Inputs | Comparability adjustments (%) | Comparability adjustments (%)
Collateral-dependent impaired loans [Member] | Comparability adjustments (%) [Member] |  |
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements |  |
Fair Value Measurements, Range (Weighted Average) |  |
Mortgage servicing rights [Member] |  |
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 2,112 | 2,667
Fair Value Measurements, Valuation Technique | Discounted cash flow | Discounted cash flow
Fair Value Measurements, Unobservable Inputs | Discount Rate Constant prepayment rate P&I earnings credit T&I earnings credit Inflation for cost of servicing | Discount Rate Constant prepayment rate P&I earnings credit T&I earnings credit Inflation for cost of servicing
Mortgage servicing rights [Member] | Discount Rate [Member] |  |
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements |  |
Fair Value Measurements, Range (Weighted Average) | 9.75% | 8.50%
Mortgage servicing rights [Member] | Constant prepayment rate [Member] |  |
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements |  |
Fair Value Measurements, Range (Weighted Average) | 8.50% | 15.60%
Mortgage servicing rights [Member] | P&I earnings credit [Member] |  |
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements |  |
Fair Value Measurements, Range (Weighted Average) | 0.18% | 0.21%
Mortgage servicing rights [Member] | T&I earnings credit [Member] |  |
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements |  |
Fair Value Measurements, Range (Weighted Average) | 1.67% | 0.81%
Mortgage servicing rights [Member] | Inflation for cost of servicing [Member] |  |
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements |  |
Fair Value Measurements, Range (Weighted Average) | 1.50% | 1.50%
Foreclosed assets [Member] |  |
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | $ 84 | $ 950
Fair Value Measurements, Valuation Technique | Market comparable properties | Market comparable properties
Fair Value Measurements, Unobservable Inputs | Marketability discount | Marketability discount
Foreclosed assets [Member] | Marketability discount [Member] |  |
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements |  |
Fair Value Measurements, Range (Weighted Average) | 10.00% | 10.00%

X
- Definition Reflects the interest rate percentage. + References No definition available. + Details
Name: | rbnf_FairValueInputInterestRate
Namespace Prefix: | rbnf_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Description of the unobservable inputs used in the valuation of investment assets by the entity. + References No definition available. + Details
Name: | rbnf_FairValueMeasurementsUnobservableInputDescription
Namespace Prefix: | rbnf_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Description of the inputs and valuation technique(s) used to measure fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementsValuationTechniques
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant