Name:	ssb_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssuedExchangeRatio
Namespace Prefix:	ssb_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

The amount of credit deficiencies that were identified as Purchased Credit Deteriorated ("PCD") loans recognized as of the acquisition date.

No definition available.

Name:	ssb_BusinessCombinationCreditDeficienciesIdentifiedAsPurchasedCreditDeterioratedPcdLoans.
Namespace Prefix:	ssb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The percentage of loans acquired as a percentage of total loans.

No definition available.

Name:	ssb_BusinessCombinationLoansAcquiredAsPercentageOfTotalLoans
Namespace Prefix:	ssb_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The amount of estimated discount on loans as of the acquisition date.

No definition available.

Name:	ssb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEstimatedDiscountOnLoans
Namespace Prefix:	ssb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The percentage of estimated discount on loans as of the acquisition date.

No definition available.

Name:	ssb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEstimatedDiscountOnLoansPercentage
Namespace Prefix:	ssb_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The amount of loans receivable recognized as of the acquisition date.

No definition available.

Name:	ssb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLoansReceivable
Namespace Prefix:	ssb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of consideration transferred, consisting of acquisition-date fair value of the conversion of outstanding stock options and restricted stock.

No definition available.

Name:	ssb_BusinessCombinationValueOfConversionOfOutstandingStockOptionsAndRestrictedStock
Namespace Prefix:	ssb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

Name:	us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife
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Data Type:	xbrli:durationItemType
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Number of shares of equity interests issued or issuable to acquire entity.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(4)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Name:	us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

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.

No definition available.

Name:	us-gaap_BusinessAcquisitionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
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Name:	us-gaap_BusinessCombinationAcquisitionRelatedCosts
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Data Type:	xbrli:monetaryItemType
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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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-Publisher FASB
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-SubTopic 30
-Section 30
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Name:	us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The amount of identifiable intangible assets recognized as of the acquisition date.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
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