XML 81 R65.htm IDEA: XBRL DOCUMENT
v3.20.4

Loans and Allowance for Loan Losses (Details) - Summary of credit risk profile of the Company's loan portfolio based on rating category - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | $ 874,144 | $ 824,790
Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 856,149 | 814,267
Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 7,830 | 1,140
Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 7,215 | 6,401
Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 2,950 | 2,982
Commercial & industrial [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 204,767 | 151,047
Commercial & industrial [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 202,543 | 147,667
Commercial & industrial [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 1,485 | 597
Commercial & industrial [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 151 | 1,444
Commercial & industrial [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 588 | 1,339
Commercial real estate - owner occupied [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 113,169 | 98,488
Commercial real estate - owner occupied [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 108,726 | 96,836
Commercial real estate - owner occupied [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 2,993 |
Commercial real estate - owner occupied [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans |  | 290
Commercial real estate - owner occupied [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 1,450 | 1,362
Commercial real estate - nonowner occupied [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 257,651 | 268,294
Commercial real estate - nonowner occupied [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 250,405 | 265,839
Commercial real estate - nonowner occupied [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 3,338 | 543
Commercial real estate - nonowner occupied [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 3,026 | 1,663
Commercial real estate - nonowner occupied [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 882 | 249
Agricultural [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 55,235 | 50,994
Agricultural [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 55,227 | 50,994
Agricultural [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans |  |
Agricultural [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 8 |
Agricultural [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans |  |
Residential real estate [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 182,165 | 193,159
Residential real estate [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 178,575 | 190,438
Residential real estate [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans |  |
Residential real estate [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 3,560 | 2,689
Residential real estate [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 30 | 32
HELOC [Memeber] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 46,310 | 48,070
HELOC [Memeber] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 45,866 | 47,787
HELOC [Memeber] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans |  |
HELOC [Memeber] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 444 | 283
HELOC [Memeber] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans |  |
Consumer [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 14,847 | 14,738
Consumer [Member] | Pass [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 14,807 | 14,706
Consumer [Member] | Special Mention [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 14 |
Consumer [Member] | Substandard [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans | 26 | 32
Consumer [Member] | Doubtful [Member] |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total Loans |  |

X
- Definition Loans and Lease Receivable, Gross. + References No definition available. + Details
Name: | sbfg_LoansAndLeasReceivableGrossCarryingAmount
Namespace Prefix: | sbfg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

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

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

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

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

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=sbfg_AgriculturalMember
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_HomeEquityLoanMember
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: |