XML 44 R33.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Loans and Allowance for Loan Losses (Details 2) - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | $ 706,706 | $ 696,128
Loan Grade 1-2 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 857 | 942
Loan Grade 3 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 287,861 | 292,519
Loan Grade 4 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 408,904 | 396,822
Total Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 697,622 | 690,283
Special Mention [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 5,391 | 1,810
Substandard [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 2,793 | 2,367
Doubtful [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 900 | 1,668
Loss [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans |  |
Commercial & Industrial [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 107,078 | 101,554
Commercial & Industrial [Member] | Loan Grade 1-2 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 19 | 96
Commercial & Industrial [Member] | Loan Grade 3 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 18,237 | 19,883
Commercial & Industrial [Member] | Loan Grade 4 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 84,804 | 80,448
Commercial & Industrial [Member] | Total Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 103,060 | 100,427
Commercial & Industrial [Member] | Special Mention [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 3,395 | 512
Commercial & Industrial [Member] | Substandard [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 88 | 7
Commercial & Industrial [Member] | Doubtful [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 535 | 608
Commercial & Industrial [Member] | Loss [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans |  |
Commercial RE & Construction [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 338,586 | 332,154
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 |  |
Total Loans | 9 | 13
Commercial RE & Construction [Member] | Loan Grade 3 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 92,736 | 93,222
Commercial RE & Construction [Member] | Loan Grade 4 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 243,601 | 236,217
Commercial RE & Construction [Member] | Total Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 336,346 | 329,452
Commercial RE & Construction [Member] | Special Mention [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 1,474 | 1,100
Commercial RE & Construction [Member] | Substandard [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 438 | 580
Commercial RE & Construction [Member] | Doubtful [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 328 | 1,022
Commercial RE & Construction [Member] | Loss [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans |  |
Agricultural & Farmland [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 50,266 | 51,947
Agricultural & Farmland [Member] | Loan Grade 1-2 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans |  |
Agricultural & Farmland [Member] | Loan Grade 3 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 7,741 | 8,080
Agricultural & Farmland [Member] | Loan Grade 4 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 42,064 | 43,735
Agricultural & Farmland [Member] | Total Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 49,805 | 51,815
Agricultural & Farmland [Member] | Special Mention [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 461 | 132
Agricultural & Farmland [Member] | Substandard [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans |  |
Agricultural & Farmland [Member] | Doubtful [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans |  |
Agricultural & Farmland [Member] | Loss [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans |  |
Residential Real Estate [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 151,820 | 150,854
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 |  |
Total Loans | 828 | 832
Residential Real Estate [Member] | Loan Grade 3 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 112,491 | 114,130
Residential Real Estate [Member] | Loan Grade 4 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 36,370 | 34,271
Residential Real Estate [Member] | Total Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 149,689 | 149,233
Residential Real Estate [Member] | Special Mention [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans |  |
Residential Real Estate [Member] | Substandard [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 2,094 | 1,583
Residential Real Estate [Member] | Doubtful [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 37 | 38
Residential Real Estate [Member] | Loss [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans |  |
Consumer & Other [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 58,956 | 59,619
Consumer & Other [Member] | Loan Grade 1-2 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 1 | 1
Consumer & Other [Member] | Loan Grade 3 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 56,656 | 57,204
Consumer & Other [Member] | Loan Grade 4 Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 2,065 | 2,151
Consumer & Other [Member] | Total Pass [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 58,722 | 59,356
Consumer & Other [Member] | Special Mention [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 61 | 66
Consumer & Other [Member] | Substandard [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans | 173 | 197
Consumer & Other [Member] | Doubtful [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans |  |
Consumer & Other [Member] | Loss [Member] |  |
Summary of credit risk profile of the Company's loan portfolio based on rating category |  |
Total Loans |  |

X
- Definition Credit risk profile of the Company's loan portfolio based on rating category. + References No definition available. + Details
Name: | sbfg_CreditRiskProfileOfCompanyLoanPortfolioBasedOnRatingCategoryAbstract
Namespace Prefix: | sbfg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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=82891408&loc=d3e4428-111522 + Details
Name: | us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | sbfg_CreditRatingCategoryAxis=sbfg_LoanGradeOneToTwoPassMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | sbfg_CreditRatingCategoryAxis=sbfg_LoanGradeThreePassMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | sbfg_CreditRatingCategoryAxis=sbfg_LoanGradeFourPassMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | sbfg_CreditRatingCategoryAxis=us-gaap_PassMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | sbfg_CreditRatingCategoryAxis=us-gaap_SpecialMentionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | sbfg_CreditRatingCategoryAxis=us-gaap_SubstandardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | sbfg_CreditRatingCategoryAxis=us-gaap_DoubtfulMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | sbfg_CreditRatingCategoryAxis=sbfg_LossMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=sbfg_CommercialAndIndustrialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=sbfg_CommercialReConstructionPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=sbfg_AgriculturalFarmlandPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ResidentialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |