XML 45 R32.htm IDEA: XBRL DOCUMENT
v3.24.2

Loans and Allowance for Credit Losses (Details) - Schedule of composition of our loan portfolio - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2024 | Dec. 31, 2023
Consumer |  |
Total gross loans, net of deferred fees | $ 3,622,521 | $ 3,602,627
Total gross loans, net of deferred fees percentage | 100.00% | 100.00%
Less - allowance for credit losses | $ (40,157) | $ (40,682)
Total loans, net | 3,582,364 | 3,561,945
Commercial [Member] |  |
Commercial |  |
Total commercial loans | $ 2,231,027 | $ 2,225,027
Total commercial loans percentage | 61.50% | 61.80%
Commercial [Member] | Construction [Member] |  |
Commercial |  |
Total commercial loans | $ 144,968 | $ 150,680
Total commercial loans percentage | 4.00% | 4.20%
Commercial [Member] | Business [Member] |  |
Commercial |  |
Total commercial loans | $ 527,017 | $ 500,161
Total commercial loans percentage | 14.50% | 13.90%
Commercial [Member] | Owner occupied RE [Member] |  |
Commercial |  |
Total commercial loans | $ 642,008 | $ 631,657
Total commercial loans percentage | 17.70% | 17.50%
Commercial [Member] | Non-owner occupied RE [Member] |  |
Commercial |  |
Total commercial loans | $ 917,034 | $ 942,529
Total commercial loans percentage | 25.30% | 26.20%
Consumer [Member] |  |
Consumer |  |
Total consumer loans | $ 1,391,494 | $ 1,377,600
Total consumer loans percentage | 38.50% | 38.20%
Consumer [Member] | Construction [Member] |  |
Consumer |  |
Total consumer loans | $ 32,936 | $ 63,348
Total consumer loans percentage | 0.90% | 1.70%
Consumer [Member] | Real estate [Member] |  |
Consumer |  |
Total consumer loans | $ 1,126,155 | $ 1,082,429
Total consumer loans percentage | 31.10% | 30.00%
Consumer [Member] | Home equity [Member] |  |
Consumer |  |
Total consumer loans | $ 189,294 | $ 183,004
Total consumer loans percentage | 5.30% | 5.10%
Consumer [Member] | Other [Member] |  |
Consumer |  |
Total consumer loans | $ 43,109 | $ 48,819
Total consumer loans percentage | 1.20% | 1.40%

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

X
- Definition Carrying amount of commercial loans, whether secured or unsecured, to a company for purposes such as seasonal working capital needs, inventory financing, equipment purchases and acquisitions. + References No definition available. + Details
Name: | SFST_CommercialLoansReceivableCarryingAmount
Namespace Prefix: | SFST_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Total percentage of deferred loan fees and costs of commercial loans. + References No definition available. + Details
Name: | SFST_CommercialLoansReceivablePercentage
Namespace Prefix: | SFST_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Carrying amount of borrowing arrangement which provides the entity constructing a facility (such as a building and a landfill) with funds to effect construction, generally on a draw down, or as needed, basis. + References No definition available. + Details
Name: | SFST_ConsumerLoansReceivableCarryingAmount
Namespace Prefix: | SFST_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Total percentage of deferred loan fees and costs of consumer loans. + References No definition available. + Details
Name: | SFST_ConsumerLoansReceivablePercentage
Namespace Prefix: | SFST_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Loans and leases receivable net of deferred income percentage. + References No definition available. + Details
Name: | SFST_LoansAndLeasesReceivableNetOfDeferredIncomePercentage
Namespace Prefix: | SFST_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-11B Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-11B Reference 3: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481696/310-30-50-2 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480418/310-10-S99-4 + Details
Name: | us-gaap_LoansAndLeasesReceivableAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-4 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481990/310-10-45-2 + Details
Name: | us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481990/310-10-45-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 + Details
Name: | us-gaap_LoansAndLeasesReceivableNetReportedAmount
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_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: |

X
- Details
Name: | us-gaap_CollateralAxis=us-gaap_ResidentialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CollateralAxis=us-gaap_CommercialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_ConsumerLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_RealEstateLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_HomeEquityLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=SFST_OtherConsumerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |