XML 71 R59.htm IDEA: XBRL DOCUMENT
v3.22.4

Loans and Allowance for Credit Losses (Details) - Schedule of outstanding loans by credit quality indicators by year of origination $ in Thousands | Dec. 31, 2022 USD ($)
--- | ---
Owner occupied RE |
2022 | $ 955,802
2021 | 735,661
2020 | 447,470
2019 | 257,328
2018 | 195,538
Prior | 344,363
Revolving | 335,274
Revolving Converted to Term | 1,927
Total | 3,273,363
Commercial [Member] |
Owner occupied RE |
2022 | 657,731
2021 | 417,810
2020 | 245,037
2019 | 178,049
2018 | 154,207
Prior | 257,246
Revolving | 141,311
Revolving Converted to Term | 1,927
Total | 2,053,318
Commercial [Member] | Construction [Member] |
Owner occupied RE |
2022 | 49,539
2021 | 55,129
2020 | 4,811
2019 | 247
2018 |
Prior |
Revolving |
Revolving Converted to Term |
Total | 109,726
Commercial [Member] | Construction [Member] | Pass [Member] |
Owner occupied RE |
2022 | 48,420
2021 | 55,129
2020 | 4,811
2019 | 247
2018 |
Prior |
Revolving |
Revolving Converted to Term |
Total | 108,607
Commercial [Member] | Construction [Member] | Watch [Member] |
Owner occupied RE |
2022 | 1,119
2021 |
2020 |
2019 |
2018 |
Prior |
Revolving |
Revolving Converted to Term |
Total | 1,119
Commercial [Member] | Construction [Member] | Special Mention [Member] |
Owner occupied RE |
2022 |
2021 |
2020 |
2019 |
2018 |
Prior |
Revolving |
Revolving Converted to Term |
Total |
Commercial [Member] | Construction [Member] | Substandard [Member] |
Owner occupied RE |
2022 |
2021 |
2020 |
2019 |
2018 |
Prior |
Revolving |
Revolving Converted to Term |
Total |
Commercial [Member] | Business [Member] |
Owner occupied RE |
2022 | 141,310
2021 | 60,122
2020 | 31,756
2019 | 23,533
2018 | 35,743
Prior | 33,151
Revolving | 140,707
Revolving Converted to Term | 1,790
Total | 468,112
Commercial [Member] | Business [Member] | Pass [Member] |
Owner occupied RE |
2022 | 136,489
2021 | 57,804
2020 | 29,864
2019 | 21,807
2018 | 35,249
Prior | 28,914
Revolving | 136,337
Revolving Converted to Term | 709
Total | 447,174
Commercial [Member] | Business [Member] | Watch [Member] |
Owner occupied RE |
2022 | 3,186
2021 | 2,058
2020 | 1,318
2019 | 1,282
2018 | 179
Prior | 3,074
Revolving | 3,783
Revolving Converted to Term | 439
Total | 15,319
Commercial [Member] | Business [Member] | Special Mention [Member] |
Owner occupied RE |
2022 | 1,137
2021 | 260
2020 | 386
2019 | 210
2018 |
Prior | 252
Revolving | 115
Revolving Converted to Term | 642
Total | 3,002
Commercial [Member] | Business [Member] | Substandard [Member] |
Owner occupied RE |
2022 | 498
2021 |
2020 | 188
2019 | 233
2018 | 315
Prior | 911
Revolving | 472
Revolving Converted to Term |
Total | 2,617
Consumer [Member] |
Owner occupied RE |
2022 | 298,071
2021 | 317,851
2020 | 202,433
2019 | 79,279
2018 | 41,331
Prior | 87,117
Revolving | 193,963
Revolving Converted to Term |
Total | 1,220,045
Consumer [Member] | Construction [Member] |
Owner occupied RE |
2022 | 41,138
2021 | 34,039
2020 | 4,923
2019 | 315
2018 |
Prior |
Revolving |
Revolving Converted to Term |
Total | 80,415
Consumer [Member] | Construction [Member] | Pass [Member] |
Owner occupied RE |
2022 | 41,138
2021 | 34,039
2020 | 4,923
2019 |
2018 |
Prior |
Revolving |
Revolving Converted to Term |
Total | 80,100
Consumer [Member] | Construction [Member] | Watch [Member] |
Owner occupied RE |
2022 |
2021 |
2019 |
2018 |
Prior |
Revolving |
Revolving Converted to Term |
Consumer [Member] | Construction [Member] | Special Mention [Member] |
Owner occupied RE |
2022 |
2021 |
2020 |
2019 | 315
2018 |
Prior |
Revolving |
Revolving Converted to Term |
Total | 315
Consumer [Member] | Construction [Member] | Substandard [Member] |
Owner occupied RE |
2022 |
2021 |
2020 |
2019 |
2018 |
Prior |
Revolving |
Revolving Converted to Term |
Total |
Consumer [Member] | Real estate [Member] |
Owner occupied RE |
2022 | 252,899
2021 | 280,407
2020 | 195,793
2019 | 77,376
2018 | 40,899
Prior | 83,904
Revolving |
Revolving Converted to Term |
Total | 931,278
Consumer [Member] | Real estate [Member] | Pass [Member] |
Owner occupied RE |
2022 | 243,589
2021 | 269,565
2020 | 189,075
2019 | 72,499
2018 | 39,042
Prior | 76,172
Revolving |
Revolving Converted to Term |
Total | 889,942
Consumer [Member] | Real estate [Member] | Watch [Member] |
Owner occupied RE |
2022 | 6,196
2021 | 8,256
2020 | 3,847
2019 | 2,278
2018 | 494
Prior | 3,671
Revolving |
Revolving Converted to Term |
Total | 24,742
Consumer [Member] | Real estate [Member] | Special Mention [Member] |
Owner occupied RE |
2022 | 3,114
2021 | 1,938
2020 | 2,644
2019 | 2,258
2018 | 955
Prior | 2,639
Revolving |
Revolving Converted to Term |
Total | 13,548
Consumer [Member] | Real estate [Member] | Substandard [Member] |
Owner occupied RE |
2022 |
2021 | 648
2020 | 227
2019 | 341
2018 | 408
Prior | 1,422
Revolving |
Revolving Converted to Term |
Total | 3,046
Consumer [Member] | Home equity [Member] |
Owner occupied RE |
2022 |
2021 |
2020 |
2019 |
2018 |
Prior |
Revolving | 179,300
Revolving Converted to Term |
Total | 179,300
Consumer [Member] | Home equity [Member] | Pass [Member] |
Owner occupied RE |
2022 |
2021 |
2020 |
2019 |
2018 |
Prior |
Revolving | 165,847
Revolving Converted to Term |
Total | 165,847
Consumer [Member] | Home equity [Member] | Watch [Member] |
Owner occupied RE |
2022 |
2021 |
2020 |
2019 |
2018 |
Prior |
Revolving | 7,226
Revolving Converted to Term |
Total | 7,226
Consumer [Member] | Home equity [Member] | Special Mention [Member] |
Owner occupied RE |
2022 |
2021 |
2020 |
2019 |
2018 |
Prior |
Revolving | 4,055
Revolving Converted to Term |
Total | 4,055
Consumer [Member] | Home equity [Member] | Substandard [Member] |
Owner occupied RE |
2022 |
2021 |
2020 |
2019 |
2018 |
Prior |
Revolving | 2,172
Revolving Converted to Term |
Total | 2,172
Consumer [Member] | Other [Member] |
Owner occupied RE |
2022 | 4,034
2021 | 3,405
2020 | 1,717
2019 | 1,588
2018 | 432
Prior | 3,213
Revolving | 14,663
Revolving Converted to Term |
Total | 29,052
Consumer [Member] | Other [Member] | Pass [Member] |
Owner occupied RE |
2022 | 3,894
2021 | 3,038
2020 | 1,702
2019 | 1,534
2018 | 341
Prior | 3,015
Revolving | 14,465
Revolving Converted to Term |
Total | 27,989
Consumer [Member] | Other [Member] | Watch [Member] |
Owner occupied RE |
2022 | 46
2021 | 367
2020 | 15
2019 | 5
2018 | 16
Prior | 175
Revolving | 93
Revolving Converted to Term |
Total | 717
Consumer [Member] | Other [Member] | Special Mention [Member] |
Owner occupied RE |
2022 | 94
2021 |
2020 |
2019 | 44
2018 | 75
Prior | 23
Revolving | 97
Revolving Converted to Term |
Total | 332
Consumer [Member] | Other [Member] | Substandard [Member] |
Owner occupied RE |
2022 |
2020 |
2019 | 5
2018 |
Prior |
Revolving | 9
Revolving Converted to Term |
Total | 14
Owner occupied RE [Member] | Commercial [Member] |
Owner occupied RE |
2022 | 183,931
2021 | 123,133
2020 | 95,206
2019 | 69,957
2018 | 37,007
Prior | 103,667
Revolving |
Revolving Converted to Term |
Total | 612,901
Owner occupied RE [Member] | Commercial [Member] | Pass [Member] |
Owner occupied RE |
2022 | 169,083
2021 | 122,654
2020 | 85,867
2019 | 66,299
2018 | 36,718
Prior | 93,915
Revolving |
Revolving Converted to Term |
Total | 574,536
Owner occupied RE [Member] | Commercial [Member] | Watch [Member] |
Owner occupied RE |
2022 | 14,648
2021 | 479
2020 | 9,339
2019 | 3,658
2018 |
Prior | 6,792
Revolving |
Revolving Converted to Term |
Total | 34,916
Owner occupied RE [Member] | Commercial [Member] | Special Mention [Member] |
Owner occupied RE |
2022 | 200
2021 |
2020 |
2019 |
2018 |
Prior | 2,960
Revolving |
Revolving Converted to Term |
Total | 3,160
Owner occupied RE [Member] | Commercial [Member] | Substandard [Member] |
Owner occupied RE |
2022 |
2021 |
2019 |
2018 | 289
Prior |
Revolving |
Revolving Converted to Term |
Total | 289
Non-owner occupied RE [Member] | Commercial [Member] |
Owner occupied RE |
2022 | 282,951
2021 | 179,426
2020 | 113,264
2019 | 84,312
2018 | 81,457
Prior | 120,428
Revolving | 604
Revolving Converted to Term | 137
Total | 862,579
Non-owner occupied RE [Member] | Commercial [Member] | Pass [Member] |
Owner occupied RE |
2022 | 281,890
2021 | 169,599
2020 | 113,264
2019 | 59,550
2018 | 79,722
Prior | 106,967
Revolving | 604
Revolving Converted to Term | 137
Total | 811,733
Non-owner occupied RE [Member] | Commercial [Member] | Watch [Member] |
Owner occupied RE |
2022 | 1,061
2021 | 9,491
2020 |
2019 | 10,683
2018 | 1,408
Prior | 11,660
Revolving |
Revolving Converted to Term |
Total | 34,303
Non-owner occupied RE [Member] | Commercial [Member] | Special Mention [Member] |
Owner occupied RE |
2022 |
2021 | 202
2020 |
2019 | 6,087
2018 |
Prior | 930
Revolving |
Revolving Converted to Term |
Total | 7,219
Non-owner occupied RE [Member] | Commercial [Member] | Substandard [Member] |
Owner occupied RE |
2022 |
2021 | 134
2020 |
2019 | 7,992
2018 | 327
Prior | 871
Revolving |
Revolving Converted to Term |
Total | $ 9,324

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

X
- Definition Amortized cost of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447 + Details
Name: | us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable originated four years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447 + Details
Name: | us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable originated in current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447 + Details
Name: | us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable originated in fiscal year prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 + Details
Name: | us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable originated three years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447 + Details
Name: | us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable originated two years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447 + Details
Name: | us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable that can be withdrawn, repaid, and redrawn. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919232-210447 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 + Details
Name: | us-gaap_FinancingReceivableRevolving
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of revolving financing receivable converted to term loan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6A -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL120270059-210447 + Details
Name: | us-gaap_FinancingReceivableRevolvingConvertedToTermLoan
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953401-111524 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)(b)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 14 -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919253-210447 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919230-210447 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 80 -URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922355-210448 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (1) Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (2) Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1404 -Paragraph (a) + Details
Name: | us-gaap_NotesReceivableGross
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_InternalCreditAssessmentAxis=us-gaap_PassMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=sfst_WatchMember
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_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=sfst_BusinessLoansMember
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_OtherLoansMember
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: |