XML 81 R70.htm IDEA: XBRL DOCUMENT
v3.25.3

Loans - Changes in Status of Loans (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024
Allowance for Credit Losses |  |
Paying Under Restructured Terms - Amortized Cost | $ 158,571 | $ 35,521
Foreclosures and Defaults - Amortized Cost | 1,839 |
90 days past due |  |
Allowance for Credit Losses |  |
Paying Under Restructured Terms - Amortized Cost | 353 |
Consumer loans | 90 days past due | Consumer owner-occupied |  |
Allowance for Credit Losses |  |
Paying Under Restructured Terms - Amortized Cost | 353 |
Interest rate reduction |  |
Allowance for Credit Losses |  |
Paying Under Restructured Terms - Amortized Cost | 15,673 | 896
Interest rate reduction | Commercial loans | Commercial non-owner-occupied |  |
Allowance for Credit Losses |  |
Paying Under Restructured Terms - Amortized Cost | 14,981 |
Interest rate reduction | Commercial loans | Commercial owner-occupied real estate |  |
Allowance for Credit Losses |  |
Paying Under Restructured Terms - Amortized Cost | 325 |
Interest rate reduction | Commercial loans | Commercial and industrial |  |
Allowance for Credit Losses |  |
Paying Under Restructured Terms - Amortized Cost | 367 |
Interest rate reduction | Consumer loans | Consumer owner-occupied |  |
Allowance for Credit Losses |  |
Paying Under Restructured Terms - Amortized Cost |  | 896
Term extension |  |
Allowance for Credit Losses |  |
Paying Under Restructured Terms - Amortized Cost | 53,392 | 34,359
Foreclosures and Defaults - Amortized Cost | 1,502 |
Term extension | Commercial loans | Construction and land development |  |
Allowance for Credit Losses |  |
Paying Under Restructured Terms - Amortized Cost | 310 |
Foreclosures and Defaults - Amortized Cost | 282 |
Term extension | Commercial loans | Commercial non-owner-occupied |  |
Allowance for Credit Losses |  |
Paying Under Restructured Terms - Amortized Cost | 30,697 |
Term extension | Commercial loans | Commercial owner-occupied real estate |  |
Allowance for Credit Losses |  |
Paying Under Restructured Terms - Amortized Cost | 7,563 | 13,461
Term extension | Commercial loans | Commercial and industrial |  |
Allowance for Credit Losses |  |
Paying Under Restructured Terms - Amortized Cost | 8,801 | 19,553
Foreclosures and Defaults - Amortized Cost | 285 |
Term extension | Consumer loans | Consumer owner-occupied |  |
Allowance for Credit Losses |  |
Paying Under Restructured Terms - Amortized Cost | 6,021 | 1,345
Foreclosures and Defaults - Amortized Cost | 935 |
Term Extension and Interest Rate Reduction |  |
Allowance for Credit Losses |  |
Paying Under Restructured Terms - Amortized Cost | 1,799 |
Foreclosures and Defaults - Amortized Cost | 337 |
Term Extension and Interest Rate Reduction | Consumer loans | Consumer owner-occupied |  |
Allowance for Credit Losses |  |
Paying Under Restructured Terms - Amortized Cost | 1,799 |
Foreclosures and Defaults - Amortized Cost | 337 |
Other-than-insignificant payment delay |  |
Allowance for Credit Losses |  |
Paying Under Restructured Terms - Amortized Cost | 56,733 |
Other-than-insignificant payment delay | Commercial loans | Construction and land development |  |
Allowance for Credit Losses |  |
Paying Under Restructured Terms - Amortized Cost | 26,218 |
Other-than-insignificant payment delay | Commercial loans | Commercial non-owner-occupied |  |
Allowance for Credit Losses |  |
Paying Under Restructured Terms - Amortized Cost | 22,833 |
Other-than-insignificant payment delay | Commercial loans | Commercial owner-occupied real estate |  |
Allowance for Credit Losses |  |
Paying Under Restructured Terms - Amortized Cost | 6,072 |
Other-than-insignificant payment delay | Commercial loans | Commercial and industrial |  |
Allowance for Credit Losses |  |
Paying Under Restructured Terms - Amortized Cost | 1,610 |
Term Extension and Payment Delay |  |
Allowance for Credit Losses |  |
Paying Under Restructured Terms - Amortized Cost |  | 266
Term Extension and Payment Delay | Commercial loans | Commercial and industrial |  |
Allowance for Credit Losses |  |
Paying Under Restructured Terms - Amortized Cost |  | 266
Interest Rate Reduction and Payment Delay |  |
Allowance for Credit Losses |  |
Paying Under Restructured Terms - Amortized Cost | 30,974 | $ 266
Interest Rate Reduction and Payment Delay | Commercial loans | Commercial non-owner-occupied |  |
Allowance for Credit Losses |  |
Paying Under Restructured Terms - Amortized Cost | 29,802 |
Interest Rate Reduction and Payment Delay | Commercial loans | Commercial and industrial |  |
Allowance for Credit Losses |  |
Paying Under Restructured Terms - Amortized Cost | $ 1,172 |

X
- Definition Amount of modified financing receivable under restructured terms. + References No definition available. + Details
Name: | ssb_FinancingReceivableModificationAmortizedCostUnderRestructuredTerms
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of financing receivable with payment default in current period and modified within previous 12 months preceding payment default for debtor experiencing financial difficulty. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 12A -Publisher FASB -URI https://asc.fasb.org/1943274/2147481933/310-10-55-12A Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 34 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-34 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 44 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-44 + Details
Name: | us-gaap_FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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 Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (d)(4) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (d)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (d)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (d)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 8: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 9: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 10: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-14 Reference 12: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (e)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 13: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (e)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 14: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (b)(4) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 15: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (b)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 16: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-12 Reference 17: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 80 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-80 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentPastDueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=us-gaap_ContractualInterestRateReductionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=us-gaap_ExtendedMaturityMember
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_LoanRestructuringModificationAxis=us-gaap_ExtendedMaturityAndInterestRateReductionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=us-gaap_PaymentDeferralMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=ssb_TermExtensionAndPaymentDelayMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=ssb_InterestRateReductionAndPaymentDelayMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |