XML 48 R36.htm IDEA: XBRL DOCUMENT v3.19.2

Loans and Allowance for Loan Losses (Schedule of Breakdown of Outstanding Loans by Risk Category) (Details) - Commercial Loan [Member] - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	$ 1,223,702	$ 1,128,705
Pass [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	1,205,682	1,115,196
Special Mention [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	8,080	3,385
Substandard [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	9,940	10,124
Doubtful [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans
Owner Occupied Re [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	390,727	367,018
Owner Occupied Re [Member] | Pass [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	386,489	363,621
Owner Occupied Re [Member] | Special Mention [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	1,850	296
Owner Occupied Re [Member] | Substandard [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	2,388	3,101
Owner Occupied Re [Member] | Doubtful [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans
Non Owner Occupied Re [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	455,346	404,296
Non Owner Occupied Re [Member] | Pass [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	447,808	400,266
Non Owner Occupied Re [Member] | Special Mention [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	4,194	118
Non Owner Occupied Re [Member] | Substandard [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	3,344	3,912
Non Owner Occupied Re [Member] | Doubtful [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans
Construction Loans [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	85,065	84,411
Construction Loans [Member] | Pass [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	84,998	84,411
Construction Loans [Member] | Special Mention [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	67
Construction Loans [Member] | Substandard [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans
Construction Loans [Member] | Doubtful [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans
Business Loan [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	292,564	272,980
Business Loan [Member] | Pass [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	286,387	266,898
Business Loan [Member] | Special Mention [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	1,969	2,971
Business Loan [Member] | Substandard [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans	4,208	3,111
Business Loan [Member] | Doubtful [Member]
Outstanding commercial and consumer loans by risk category
Outstanding commercial loans

X

- References

No definition available.

+ Details

Name:	sfst_OutstandingLoansByRiskCategoryAbstract
Namespace Prefix:	sfst_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount, before allowance and fees, of loans and leases receivable. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522

+ Details

Name:	us-gaap_LoansAndLeasesReceivableBeforeFeesGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_CommercialLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=us-gaap_PassMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=us-gaap_SpecialMentionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=us-gaap_SubstandardMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=us-gaap_DoubtfulMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=sfst_OwnerOccupiedReMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=sfst_NonOwnerOccupiedReMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConstructionLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=sfst_BusinessLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: