Name:	ssb_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssuedExchangeRatio
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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.
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Data Type:	xbrli:monetaryItemType
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The percentage of loans acquired as a percentage of total loans.

No definition available.

Name:	ssb_BusinessCombinationLoansAcquiredAsPercentageOfTotalLoans
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Data Type:	num:percentItemType
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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
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The percentage of estimated discount on loans as of the acquisition date.

No definition available.

Name:	ssb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEstimatedDiscountOnLoansPercentage
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Data Type:	num:percentItemType
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The amount of fair value adjustment on loans acquired.

No definition available.

Name:	ssb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFairValueAdjustment
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Data Type:	xbrli:monetaryItemType
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The amount of loans receivable recognized as of the acquisition date.

No definition available.

Name:	ssb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLoansReceivable
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Data Type:	xbrli:monetaryItemType
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The amount of loans receivable recognized as of the acquisition date after initial adjustment.

No definition available.

Name:	ssb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLoansReceivableNetInitialAdjustment
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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
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Data Type:	xbrli:monetaryItemType
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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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Number of shares of equity interests issued or issuable to acquire entity.

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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.

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

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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