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Loans and Allowance for Loan Losses (Details 2) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2015 | Dec. 31, 2014
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Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | $ 511,863us-gaap_LoansAndLeasesReceivableGrossCarryingAmount | $ 516,492us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Loan Grade 1-2 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 1,043us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeOneToTwoPassMember | 1,275us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeOneToTwoPassMember
Loan Grade 3 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 250,660us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeThreePassMember | 253,808us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeThreePassMember
Loan Grade 4 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 243,739us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeFourPassMember | 243,845us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeFourPassMember
Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 495,442us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_PassMember | 498,928us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_PassMember
Special Mention [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 7,326us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_SpecialMentionMember | 7,551us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_SpecialMentionMember
Substandard [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 4,746us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_SubstandardMember | 5,541us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_SubstandardMember
Doubtful [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 4,349us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_DoubtfulMember | 4,472us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_DoubtfulMember
Loss [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross |  |
Commercial & Industrial [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 85,100us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialAndIndustrialPortfolioSegmentMember | 88,485us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialAndIndustrialPortfolioSegmentMember
Commercial & Industrial [Member] | Loan Grade 1-2 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 921us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeOneToTwoPassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialAndIndustrialPortfolioSegmentMember | 1,148us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeOneToTwoPassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialAndIndustrialPortfolioSegmentMember
Commercial & Industrial [Member] | Loan Grade 3 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 23,043us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeThreePassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialAndIndustrialPortfolioSegmentMember | 23,580us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeThreePassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialAndIndustrialPortfolioSegmentMember
Commercial & Industrial [Member] | Loan Grade 4 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 59,479us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeFourPassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialAndIndustrialPortfolioSegmentMember | 61,691us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeFourPassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialAndIndustrialPortfolioSegmentMember
Commercial & Industrial [Member] | Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 83,443us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_PassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialAndIndustrialPortfolioSegmentMember | 86,419us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_PassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialAndIndustrialPortfolioSegmentMember
Commercial & Industrial [Member] | Special Mention [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 50us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_SpecialMentionMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialAndIndustrialPortfolioSegmentMember | 83us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_SpecialMentionMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialAndIndustrialPortfolioSegmentMember
Commercial & Industrial [Member] | Substandard [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 323us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_SubstandardMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialAndIndustrialPortfolioSegmentMember | 752us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_SubstandardMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialAndIndustrialPortfolioSegmentMember
Commercial & Industrial [Member] | Doubtful [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 1,284us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_DoubtfulMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialAndIndustrialPortfolioSegmentMember | 1,231us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_DoubtfulMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialAndIndustrialPortfolioSegmentMember
Commercial & Industrial [Member] | Loss [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross |  |
Commercial RE & Construction [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 217,610us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialReConstructionPortfolioSegmentMember | 217,030us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialReConstructionPortfolioSegmentMember
Commercial RE & Construction [Member] | Loan Grade 1-2 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 63us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeOneToTwoPassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialReConstructionPortfolioSegmentMember | 66us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeOneToTwoPassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialReConstructionPortfolioSegmentMember
Commercial RE & Construction [Member] | Loan Grade 3 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 64,940us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeThreePassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialReConstructionPortfolioSegmentMember | 67,779us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeThreePassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialReConstructionPortfolioSegmentMember
Commercial RE & Construction [Member] | Loan Grade 4 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 140,533us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeFourPassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialReConstructionPortfolioSegmentMember | 136,427us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeFourPassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialReConstructionPortfolioSegmentMember
Commercial RE & Construction [Member] | Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 205,536us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_PassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialReConstructionPortfolioSegmentMember | 204,272us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_PassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialReConstructionPortfolioSegmentMember
Commercial RE & Construction [Member] | Special Mention [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 6,054us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_SpecialMentionMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialReConstructionPortfolioSegmentMember | 6,224us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_SpecialMentionMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialReConstructionPortfolioSegmentMember
Commercial RE & Construction [Member] | Substandard [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 4,060us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_SubstandardMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialReConstructionPortfolioSegmentMember | 4,422us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_SubstandardMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialReConstructionPortfolioSegmentMember
Commercial RE & Construction [Member] | Doubtful [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 1,960us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_DoubtfulMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialReConstructionPortfolioSegmentMember | 2,112us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_DoubtfulMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_CommercialReConstructionPortfolioSegmentMember
Commercial RE & Construction [Member] | Loss [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross |  |
Agricultural & Farmland [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 44,266us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_AgriculturalFarmlandPortfolioSegmentMember | 46,217us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_AgriculturalFarmlandPortfolioSegmentMember
Agricultural & Farmland [Member] | Loan Grade 1-2 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 59us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeOneToTwoPassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_AgriculturalFarmlandPortfolioSegmentMember | 61us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeOneToTwoPassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_AgriculturalFarmlandPortfolioSegmentMember
Agricultural & Farmland [Member] | Loan Grade 3 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 8,723us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeThreePassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_AgriculturalFarmlandPortfolioSegmentMember | 9,505us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeThreePassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_AgriculturalFarmlandPortfolioSegmentMember
Agricultural & Farmland [Member] | Loan Grade 4 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 35,484us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeFourPassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_AgriculturalFarmlandPortfolioSegmentMember | 36,651us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeFourPassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_AgriculturalFarmlandPortfolioSegmentMember
Agricultural & Farmland [Member] | Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 44,266us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_PassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_AgriculturalFarmlandPortfolioSegmentMember | 46,217us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_PassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = rbnf_AgriculturalFarmlandPortfolioSegmentMember
Agricultural & Farmland [Member] | Special Mention [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross |  |
Agricultural & Farmland [Member] | Substandard [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross |  |
Agricultural & Farmland [Member] | Doubtful [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross |  |
Agricultural & Farmland [Member] | Loss [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross |  |
Residential Real Estate [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 114,703us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialRealEstateMember | 113,214us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialRealEstateMember
Residential Real Estate [Member] | Loan Grade 1-2 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross |  |
Residential Real Estate [Member] | Loan Grade 3 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 107,291us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeThreePassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialRealEstateMember | 105,149us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeThreePassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialRealEstateMember
Residential Real Estate [Member] | Loan Grade 4 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 4,987us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeFourPassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialRealEstateMember | 5,611us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeFourPassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialRealEstateMember
Residential Real Estate [Member] | Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 112,278us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_PassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialRealEstateMember | 110,760us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_PassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialRealEstateMember
Residential Real Estate [Member] | Special Mention [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 1,149us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_SpecialMentionMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialRealEstateMember | 1,160us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_SpecialMentionMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialRealEstateMember
Residential Real Estate [Member] | Substandard [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 309us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_SubstandardMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialRealEstateMember | 312us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_SubstandardMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialRealEstateMember
Residential Real Estate [Member] | Doubtful [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 967us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_DoubtfulMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialRealEstateMember | 982us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_DoubtfulMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ResidentialRealEstateMember
Residential Real Estate [Member] | Loss [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross |  |
Consumer & Other [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 50,184us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember | 51,546us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember
Consumer & Other [Member] | Loan Grade 1-2 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross |  |
Consumer & Other [Member] | Loan Grade 3 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 46,663us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeThreePassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember | 47,795us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeThreePassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember
Consumer & Other [Member] | Loan Grade 4 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 3,256us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeFourPassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember | 3,465us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = rbnf_LoanGradeFourPassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember
Consumer & Other [Member] | Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 49,919us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_PassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember | 51,260us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_PassMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember
Consumer & Other [Member] | Special Mention [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 73us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_SpecialMentionMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember | 84us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_SpecialMentionMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember
Consumer & Other [Member] | Substandard [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
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Consumer & Other [Member] | Doubtful [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross | 138us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_DoubtfulMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember | 147us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / rbnf_CreditRatingCategoryAxis = us-gaap_DoubtfulMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = us-gaap_ConsumerPortfolioSegmentMember
Consumer & Other [Member] | Loss [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Loans and leases receivable, gross |  |

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- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522 + Details
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