XML 91 R73.htm IDEA: XBRL DOCUMENT v3.25.0.1

Mortgage Banking and Servicing Rights (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Mortgage Banking and Servicing Rights [Line Items]
Contractually specified servicing fees	$ 3.5	$ 3.4
Mortgage-Backed Securities, Other [Member]
Mortgage Banking and Servicing Rights [Line Items]
Unpaid principal balance of mortgage loans	$ 1,400.0	$ 1,400.0

X

- Definition

Contractually specified servicing fees .

+ References

No definition available.

+ Details

Name:	sbfg_ContractuallySpecifiedServicingFees
Namespace Prefix:	sbfg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of unpaid principal balance of mortgage loans serviced for others.

+ References

No definition available.

+ Details

Name:	sbfg_UnpaidPrincipalBalanceOfMortgageLoansServicedForOthers
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_ParticipatingMortgageLoansLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_UnderlyingAssetClassAxis=us-gaap_MortgageBackedSecuritiesOtherMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: