XML 41 R28.htm IDEA: XBRL DOCUMENT
v3.23.2

Mortgage Loans Held for Sale (Details Narrative) - USD ($) $ in Thousands | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Mortgage Loans Held For Sale |  |
Mortgage loans held for sale, fair value | $ 15,800 | $ 3,900

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

X
- Definition Fair value portion of mortgage loans held-for-sale. + References No definition available. + Details
Name: | us-gaap_MortgagesHeldForSaleFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant