XML 65 R55.htm IDEA: XBRL DOCUMENT
v3.23.2

Loans and Allowance for Credit Losses (Details) - Schedule of Credit Losses for Unfunded Loan Commitments - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2023
Loans and Allowance for Credit Losses (Details) - Schedule of Credit Losses for Unfunded Loan Commitments [Line Items] |  |
Balance, beginning of period |  |
Adjustment for adoption of ASU 2016-13 |  | 1,149
Provision for unfunded commitments |  | (293)
Balance, end of period | $ 856 | 856
Allowance for Credit Losses - Unfunded Commitments [Member] |  |
Loans and Allowance for Credit Losses (Details) - Schedule of Credit Losses for Unfunded Loan Commitments [Line Items] |  |
Balance, beginning of period | 1,086 |
Adjustment for adoption of ASU 2016-13 |  |
Provision for unfunded commitments | (230) |
Balance, end of period | $ 856 | $ 856

X
- Definition The amount of adjustment for adoption. + References No definition available. + Details
Name: | sbfg_AdjustmentForAdoptionOfASU201613
Namespace Prefix: | sbfg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement. + References No definition available. + Details
Name: | sbfg_FinancingReceivableAllowanceForCreditLosse
Namespace Prefix: | sbfg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | sbfg_LoansandAllowanceforCreditLossesDetailsScheduleofCreditLossesforUnfundedLoanCommitmentsLineItems
Namespace Prefix: | sbfg_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Provision for unfunded commitments. + References No definition available. + Details
Name: | sbfg_ProvisionForUnfundedCommitments
Namespace Prefix: | sbfg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_FairValueByLiabilityClassAxis=sbfg_AllowanceForCreditLossesUnfundedCommitmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |