XML 74 R63.htm IDEA: XBRL DOCUMENT v3.26.1

Loans - Changes in Status of Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost	$ 270,545	$ 42,110
Converted to Nonaccrual - Amortized Cost	2,000
Foreclosures and Defaults - Amortized Cost	3,680	6,434
90 days past due
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost	2,864	6,106
Commercial loans | 90 days past due | Commercial owner-occupied real estate
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost	1,801	962
Commercial loans | 90 days past due | Commercial and industrial
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost	425	5,144
Consumer loans | 90 days past due | Consumer owner-occupied
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost	638
Interest rate reduction
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost	3,860	16,362
Interest rate reduction | Commercial loans | Commercial non-owner-occupied
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost	2,848	15,088
Interest rate reduction | Commercial loans | Commercial owner-occupied real estate
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost	723
Interest rate reduction | Commercial loans | Commercial and industrial
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost	289	390
Interest rate reduction | Consumer loans | Consumer owner-occupied
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost		884
Term extension
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost	112,989	23,005
Foreclosures and Defaults - Amortized Cost	1,544	6,434
Term extension | Commercial loans | Construction and land development
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost	7,237	295
Term extension | Commercial loans | Commercial non-owner-occupied
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost	64,982
Term extension | Commercial loans | Commercial owner-occupied real estate
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost	4,563	7,716
Foreclosures and Defaults - Amortized Cost		962
Term extension | Consumer loans | Consumer owner-occupied
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost	8,016	2,642
Foreclosures and Defaults - Amortized Cost	1,119	328
Term extension | Consumer loans | Commercial and industrial
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost	27,979	12,352
Foreclosures and Defaults - Amortized Cost	425	5,144
Term extension | Consumer loans | Other income producing property
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost	212
Term Extension and Interest Rate Reduction
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost	3,876	857
Foreclosures and Defaults - Amortized Cost	335
Term Extension and Interest Rate Reduction | Commercial loans | Construction and land development
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost	1,813
Term Extension and Interest Rate Reduction | Consumer loans | Consumer owner-occupied
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost	2,063	857
Foreclosures and Defaults - Amortized Cost	335
Other-than-insignificant payment delay
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost	117,374	693
Foreclosures and Defaults - Amortized Cost	1,801
Other-than-insignificant payment delay | Commercial loans | Commercial non-owner-occupied
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost	105,010
Other-than-insignificant payment delay | Commercial loans | Commercial owner-occupied real estate
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost	3,575	693
Foreclosures and Defaults - Amortized Cost	1,801
Other-than-insignificant payment delay | Commercial loans | Commercial and industrial
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost	8,789
Term Extension and Payment Delay
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost	2,706	1,193
Converted to Nonaccrual - Amortized Cost	2,000
Term Extension and Payment Delay | Commercial loans | Commercial non-owner-occupied
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost	2,520
Term Extension and Payment Delay | Commercial loans | Commercial and industrial
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost	186	$ 1,193
Converted to Nonaccrual - Amortized Cost	2,000
Interest Rate Reduction and Payment Delay
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost	29,740
Interest Rate Reduction and Payment Delay | Commercial loans | Commercial non-owner-occupied
Allowance for Credit Losses
Paying Under Restructured Terms - Amortized Cost	$ 29,740

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

Amount, after troubled debt restructuring, of modified financing receivable converted to nonaccrual.

+ References

No definition available.

+ Details

Name:	ssb_FinancingReceivableTroubledDebtRestructuringPostmodificationAmortizedCostConvertedToNonaccrual
Namespace Prefix:	ssb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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_CommercialPortfolioSegmentMember
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_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_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ssb_OtherCommercialNonOwnerOccupiedRealEstateMember
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_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ssb_OtherIncomeProducingPropertyLoansMember
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: