XML 63 R53.htm IDEA: XBRL DOCUMENT
v3.22.2.2

Derivative Financial Instruments (Details) - Schedule of consolidated statements of income for non-hedging derivative financial instruments - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Interest rate swap contracts [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Statement of income classification |  |  | Other income |
Amount of gain (loss) |  |  | $ 3 | $ 133
IRLCs [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Statement of income classification |  |  | Gain on sale of mortgage loans & OMSR |
Amount of gain (loss) | (201) | (239) | $ (169) | (397)
Forward contracts [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Statement of income classification |  |  | Gain on sale of mortgage loans & OMSR |
Amount of gain (loss) | $ 309 | $ 393 | $ 297 | $ 550

X
- Definition Statement of income classification. + References No definition available. + Details
Name: | sbfg_DescriptionOfLocationOfGainLossOnInterestRateDerivativeOnStatementOfIncomeClassification
Namespace Prefix: | sbfg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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: | srt_CondensedFinancialStatementsCaptionsLineItems
Namespace Prefix: | srt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(1) -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959 + Details
Name: | us-gaap_DerivativeGainLossOnDerivativeNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=sbfg_InterestRateSwapContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=sbfg_IRLCsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForwardContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |