XML 63 R50.htm IDEA: XBRL DOCUMENT
v3.22.2.2

Mergers and Acquisitions - Atlantic Capital (Details) |  | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
Mar. 01, 2022 USD ($) $ / shares shares | Sep. 30, 2022 USD ($) | Sep. 30, 2021 USD ($) | Sep. 30, 2022 USD ($) | Sep. 30, 2021 USD ($) | Mar. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Mergers and Acquisitions |  |  |  |  |  |  |
Goodwill |  | $ 1,922,525,000 |  | $ 1,922,525,000 |  |  | $ 1,581,085,000
Deposits: |  |  |  |  |  |  |
Goodwill |  | 1,922,525,000 |  | 1,922,525,000 |  |  | $ 1,581,085,000
Consideration: |  |  |  |  |  |  |
Reversal of CSFL's ending allowance for credit losses |  | 7,126,000 | $ 3,847,000 | 18,779,000 | $ 12,883,000 |  |
Atlantic Capital |  |  |  |  |  |  |
Mergers and Acquisitions |  |  |  |  |  |  |
Shares of the common stock in exchange for each share | 0.36 |  |  |  |  |  |
Purchase price | $ 657,810,000 |  |  |  |  |  |
Loans at fair value acquired after initial fair value adjustment | 2,400,000,000 |  |  |  |  |  |
Estimated discount on loans | $ 54,300,000 |  |  |  |  |  |
Estimated discount on loans (as a percent) | 2.24% |  |  |  |  |  |
Loans acquired as a percentage of total loans | 10.00% |  |  |  |  |  |
Credit deficiencies that were identified as Purchased Credit Deteriorated ("PCD") loans. | $ 137,900,000 |  |  |  |  |  |
Goodwill | 341,440,000 |  |  |  |  | $ 342,900,000 |
Acquisition costs |  | $ 7,100,000 | $ 925,000 | $ 15,000,000.0 | $ 925,000 |  |
Assets |  |  |  |  |  |  |
Cash and cash equivalents | 250,158,000 |  |  |  |  |  |
Investment securities | 703,710,000 |  |  |  |  |  |
Loans, net of allowance and mark | 2,369,678,000 |  |  |  |  |  |
Premises and equipment | 19,500,000 |  |  |  |  |  |
Intangible assets | 20,791,000 |  |  |  |  |  |
Bank owned life insurance | 74,613,000 |  |  |  |  |  |
Deferred tax asset | 32,060,000 |  |  |  |  |  |
Other assets | 51,554,000 |  |  |  |  |  |
Total assets | 3,522,064,000 |  |  |  |  |  |
Deposits: |  |  |  |  |  |  |
Noninterest-bearing | 1,411,671,000 |  |  |  |  |  |
Interest-bearing | 1,616,970,000 |  |  |  |  |  |
Total deposits | 3,028,641,000 |  |  |  |  |  |
Federal funds purchased and securities sold under agreements to repurchase | 50,000,000 |  |  |  |  |  |
Other borrowings | 78,417,000 |  |  |  |  |  |
Other liabilities | 48,636,000 |  |  |  |  |  |
Total liabilities | 3,205,694,000 |  |  |  |  |  |
Net identifiable assets acquired over (under) liabilities assumed | 316,370,000 |  |  |  |  |  |
Goodwill | 341,440,000 |  |  |  |  | $ 342,900,000 |
Net assets acquired over liabilities assumed | $ 657,810,000 |  |  |  |  |  |
Consideration: |  |  |  |  |  |  |
Number of shares issued as consideration | shares | 7,330,803 |  |  |  |  |  |
Purchase price per share of the Company's common stock | $ / shares | $ 90.00 |  |  |  |  |  |
Company common stock issued and cash exchanged for fractional shares. | $ 659,791,000 |  |  |  |  |  |
Value of shares issued | 659,772,000 |  |  |  |  |  |
Value of common stock issued for fractional shares | 19,000 |  |  |  |  |  |
Stock option conversion | 1,135,000 |  |  |  |  |  |
Restricted stock unit conversion | 2,870,000 |  |  |  |  |  |
Restricted stock awards conversion (unvested awards) | (5,986,000) |  |  |  |  |  |
Fair value of total consideration transferred | 657,810,000 |  |  |  |  |  |
Reversal of fair value adjustments | 17,200,000 |  |  |  |  |  |
Securities and time deposits at fair value (discount) | 30,900,000 |  |  |  |  |  |
HTM reclassified to AFS | $ 237,600,000 |  |  |  |  |  |
Credit mark of the loan portfolio (as a percent) | 1.40% |  |  |  |  |  |
Credit mark of the loan portfolio | $ 34,000,000.0 |  |  |  |  |  |
Net credit discount of the loan portfolio (as a percent) | 2.24% |  |  |  |  |  |
Net non-credit discount of the loan portfolio | $ 54,300,000 |  |  |  |  |  |
Reversal of CSFL's ending allowance for credit losses | 22,100,000 |  |  |  |  |  |
Fair value adjustment for reversal of deferred fees and costs | 7,600,000 |  |  |  |  |  |
Fair value adjustment for fixed assets and leased assets | 2,600,000 |  |  |  |  |  |
Core deposit intangible from a third party valuation | $ 17,500,000 |  |  |  |  |  |
Core deposit intangible from a third party valuation (as a percent) | 0.63 |  |  |  |  |  |
Serving assets from third party valuation | $ 3,200,000 |  |  |  |  |  |
Servicing assets written off | 19,900,000 |  |  |  |  |  |
Goodwill written off | $ 2,600,000 |  |  |  |  |  |
Deferred tax assets related to fair value adjustments with effective tax rate | 24.60% |  |  |  |  |  |
Fair value negative adjustment for investment in low income housing | $ 1,100,000 |  |  |  |  |  |
Fair value adjustment (decrease) on write-off of prepaid assets | 233,000 |  |  |  |  |  |
Fair value adjustment for receivables | 154,000 |  |  |  |  |  |
Fair value adjustment for Small Business Investment Company ("SBIC') Investments | 7,400,000 |  |  |  |  |  |
Issuance costs on subordinated debt | 900,000 |  |  |  |  |  |
Fair value adjustment on reversal of debt issuance costs | 3,400,000 |  |  |  |  |  |
Reversal of an existing unfunded commitment reserve at purchase date | 2,800,000 |  |  |  |  |  |
Fair value adjustment to increase lease liabilities associated with rental facilities | 1,400,000 |  |  |  |  |  |
Fair value adjustment for reversal of uncertain tax liability | 700,000 |  |  |  |  |  |
Atlantic Capital | As Recorded by Atlantic Capital |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |
Cash and cash equivalents | 250,134,000 |  |  |  |  |  |
Investment securities | 717,332,000 |  |  |  |  |  |
Loans, net of allowance and mark | 2,394,256,000 |  |  |  |  |  |
Premises and equipment | 16,892,000 |  |  |  |  |  |
Intangible assets | 22,572,000 |  |  |  |  |  |
Bank owned life insurance | 74,613,000 |  |  |  |  |  |
Deferred tax asset | 30,231,000 |  |  |  |  |  |
Other assets | 45,274,000 |  |  |  |  |  |
Total assets | 3,551,304,000 |  |  |  |  |  |
Deposits: |  |  |  |  |  |  |
Noninterest-bearing | 1,411,671,000 |  |  |  |  |  |
Interest-bearing | 1,616,970,000 |  |  |  |  |  |
Total deposits | 3,028,641,000 |  |  |  |  |  |
Federal funds purchased and securities sold under agreements to repurchase | 50,000,000 |  |  |  |  |  |
Other borrowings | 74,131,000 |  |  |  |  |  |
Other liabilities | 50,711,000 |  |  |  |  |  |
Total liabilities | 3,203,483,000 |  |  |  |  |  |
Net identifiable assets acquired over (under) liabilities assumed | 347,821,000 |  |  |  |  |  |
Net assets acquired over liabilities assumed | 347,821,000 |  |  |  |  |  |
Atlantic Capital | Initial Fair Value Adjustments |  |  |  |  |  |  |
Mergers and Acquisitions |  |  |  |  |  |  |
Goodwill | 342,939,000 |  |  |  |  |  |
Assets |  |  |  |  |  |  |
Cash and cash equivalents | 24,000 |  |  |  |  |  |
Investment securities | (13,622,000) |  |  |  |  |  |
Loans, net of allowance and mark | (18,964,000) |  |  |  |  |  |
Premises and equipment | 2,608,000 |  |  |  |  |  |
Intangible assets | (1,781,000) |  |  |  |  |  |
Deferred tax asset | 2,273,000 |  |  |  |  |  |
Other assets | (1,277,000) |  |  |  |  |  |
Total assets | (30,739,000) |  |  |  |  |  |
Deposits: |  |  |  |  |  |  |
Other borrowings | 4,286,000 |  |  |  |  |  |
Other liabilities | (2,075,000) |  |  |  |  |  |
Total liabilities | 2,211,000 |  |  |  |  |  |
Net identifiable assets acquired over (under) liabilities assumed | (32,950,000) |  |  |  |  |  |
Goodwill | 342,939,000 |  |  |  |  |  |
Net assets acquired over liabilities assumed | 309,989,000 |  |  |  |  |  |
Atlantic Capital | Subsequent Fair Value Adjustments |  |  |  |  |  |  |
Mergers and Acquisitions |  |  |  |  |  |  |
Goodwill | (1,499,000) |  |  |  |  |  |
Assets |  |  |  |  |  |  |
Loans, net of allowance and mark | (5,614,000) |  |  |  |  |  |
Deferred tax asset | (444,000) |  |  |  |  |  |
Other assets | 7,557,000 |  |  |  |  |  |
Total assets | 1,499,000 |  |  |  |  |  |
Deposits: |  |  |  |  |  |  |
Net identifiable assets acquired over (under) liabilities assumed | 1,499,000 |  |  |  |  |  |
Goodwill | $ (1,499,000) |  |  |  |  |  |

X
- Definition Represents the amount of adjustment to loans receivable on account of credit mark. + References No definition available. + Details
Name: | ssb_AdjustmentToLoansReceivableOnAccountOfCreditMark
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of adjustment to loans receivable on account of fair value mark. + References No definition available. + Details
Name: | ssb_AdjustmentToLoansReceivableOnAccountOfFairValueMark
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents the percentage of adjustment to loans receivable on account of credit mark. + References No definition available. + Details
Name: | ssb_AdjustmentToPercentageOfLoansReceivableOnAccountOfCreditMark
Namespace Prefix: | ssb_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the percentage of adjustment to loans receivable on account of fair value mark. + References No definition available. + Details
Name: | ssb_AdjustmentToPercentageOfLoansReceivableOnAccountOfFairValueMark
Namespace Prefix: | ssb_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the value of restricted stock of the acquired entity converted as a part of consideration for acquisition. + References No definition available. + Details
Name: | ssb_BusinessAcquisitionCostOfAcquiredEntityConversionOfRestrictedStock
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the value of restricted stock units of the acquired entity converted as a part of consideration for acquisition. + References No definition available. + Details
Name: | ssb_BusinessAcquisitionCostOfAcquiredEntityConversionOfRestrictedStockUnits
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the value of stock options of the acquired entity converted as a part of consideration for acquisition. + References No definition available. + Details
Name: | ssb_BusinessAcquisitionCostOfAcquiredEntityConversionOfStockOptions
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the fixed exchange ratio per share of acquirer's shares to be received in exchange for shares of acquiree entity. + References No definition available. + Details
Name: | ssb_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssuedExchangeRatio
Namespace Prefix: | ssb_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of credit deficiencies that were identified as Purchased Credit Deteriorated ("PCD") loans recognized as of the acquisition date. + References No definition available. + Details
Name: | ssb_BusinessCombinationCreditDeficienciesIdentifiedAsPurchasedCreditDeterioratedPcdLoans.
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The percentage of loans acquired as a percentage of total loans. + References No definition available. + Details
Name: | ssb_BusinessCombinationLoansAcquiredAsPercentageOfTotalLoans
Namespace Prefix: | ssb_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of bank owned life insurance on an officer, executive or employee for which the reporting entity (a bank) is entitled to proceeds from the policy upon death of the insured or surrender of the insurance policy, as of acquisition date. + References No definition available. + Details
Name: | ssb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBankOwnedLifeInsurance
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investments in debt and equity securities reclassified from held-to-maturity to available-for-sale . + References No definition available. + Details
Name: | ssb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReclassificationOfHeldToMaturitySecuritiesToAvailableForSalesSecurities
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of deposit liabilities assumed which have been recognized as of the acquisition date. + References No definition available. + Details
Name: | ssb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDepositLiabilities
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Definition The amount of estimated discount on loans as of the acquisition date. + References No definition available. + Details
Name: | ssb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEstimatedDiscountOnLoans
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The percentage of estimated discount on loans as of the acquisition date. + References No definition available. + Details
Name: | ssb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEstimatedDiscountOnLoansPercentage
Namespace Prefix: | ssb_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of interest bearing deposit liabilities assumed which have been recognized as of the acquisition date. + References No definition available. + Details
Name: | ssb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInterestBearingDepositLiabilities
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of investment securities recognized as of the acquisition date. + References No definition available. + Details
Name: | ssb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInvestmentSecurities
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of fair value discount adjustments of investment securities recognized as of the acquisition date. + References No definition available. + Details
Name: | ssb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInvestmentSecuritiesFairValueDiscount
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of reversal of existing fair value adjustments of investment securities recognized as of the acquisition date. + References No definition available. + Details
Name: | ssb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInvestmentSecuritiesReversalOfFairValueAdjustments
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of loans receivable recognized as of the acquisition date. + References No definition available. + Details
Name: | ssb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLoansReceivable
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of loans receivable recognized as of the acquisition date after initial adjustment. + References No definition available. + Details
Name: | ssb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLoansReceivableNetInitialAdjustment
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of noninterest-bearing deposit liabilities assumed which have been recognized as of the acquisition date. + References No definition available. + Details
Name: | ssb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoninterestBearingDepositLiabilities
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of other borrowings assumed which have been recognized as of the acquisition date. + References No definition available. + Details
Name: | ssb_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherBorrowings
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents the value of stock issued for fractional shares in a business combination. + References No definition available. + Details
Name: | ssb_BusinessCombinationValueStockIssuedForFractionalShares
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the fair value adjustment (decrease) for write-off of prepaid assets. + References No definition available. + Details
Name: | ssb_FairValueAdjustmentDecreaseForWriteOffOfPrepaidAssets
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of fair value adjustment for fixed assets and leased assets. + References No definition available. + Details
Name: | ssb_FairValueAdjustmentFixedAssetsAndLeasedAssets
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the fair value adjustment (decrease) for receivables. + References No definition available. + Details
Name: | ssb_FairValueAdjustmentForReceivables
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the fair value adjustment for Small Business Investment Company ("SBIC") investments. + References No definition available. + Details
Name: | ssb_FairValueAdjustmentForSmallBusinessInvestmentCompanyInvestments
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The fair value adjustment on reversal of debt issuance costs. + References No definition available. + Details
Name: | ssb_FairValueAdjustmentOnReversalOfDebtIssuanceCosts
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The fair value adjustment for reversal of deferred fees and costs. + References No definition available. + Details
Name: | ssb_FairValueAdjustmentReversalOfDeferredFeesAndCosts
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The fair value adjustment for reversal of uncertain tax liability. + References No definition available. + Details
Name: | ssb_FairValueAdjustmentReversalOfUncertainTaxLiability
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the fair value adjustment to increase lease liabilities associated with rental facilities. + References No definition available. + Details
Name: | ssb_FairValueAdjustmentToIncreaseLeaseLiabilitiesAssociatedWithRentalFacilities
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the fair value negative adjustment for investment in low income housing. + References No definition available. + Details
Name: | ssb_FairValueNegativeAdjustmentInvestmentInLowIncomeHousing
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of goodwill that was written off. + References No definition available. + Details
Name: | ssb_GoodwillWrittenOff
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Core deposit intangible from a third party valuation. + References No definition available. + Details
Name: | ssb_IntangibleAssetsFromThirdPartyValuation
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Percentages of core deposit intangible from a third party valuation. + References No definition available. + Details
Name: | ssb_PercentagesOfIntangibleAssetsFromThirdPartyValuation
Namespace Prefix: | ssb_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the reversal of an existing unfunded commitment reserve at purchase date. + References No definition available. + Details
Name: | ssb_ReversalOfExistingUnfundedCommitmentReserveAtPurchaseDate
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount serving assets from third party valuation. + References No definition available. + Details
Name: | ssb_ServicingAssetsThirdPartyValuation
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of servicing assets that was written off. + References No definition available. + Details
Name: | ssb_ServicingAssetsWrittenOff
Namespace Prefix: | ssb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Value of equity interests (such as common shares, preferred shares, or partnership interest) issued or issuable to acquire the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(4) -URI https://asc.fasb.org/extlink&oid=126975305&loc=d3e6927-128479 + Details
Name: | us-gaap_BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Number of shares of equity interests issued or issuable to acquire entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(4) -URI https://asc.fasb.org/extlink&oid=126975305&loc=d3e6927-128479 + Details
Name: | us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
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 No definition available. + Details
Name: | us-gaap_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination. + References No definition available. + Details
Name: | us-gaap_BusinessAcquisitionSharePrice
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI https://asc.fasb.org/extlink&oid=123586518&loc=d3e1043-128460 + Details
Name: | us-gaap_BusinessCombinationAcquisitionRelatedCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=126966197&loc=d3e6613-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126975305&loc=d3e6927-128479 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126966197&loc=d3e6578-128477 + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Definition Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=126966197&loc=d3e6613-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126966197&loc=d3e6578-128477 + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of assets acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=128092470&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=128092470&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of deferred tax asset attributable to deductible temporary differences and carryforwards acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=128092470&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of identifiable intangible assets recognized as of the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI https://asc.fasb.org/extlink&oid=123455525&loc=d3e2207-128464 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=128092470&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of liabilities assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=128092470&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI https://asc.fasb.org/extlink&oid=123455525&loc=d3e2207-128464 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=128092470&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=128092470&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=128092470&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of property, plant, and equipment recognized as of the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI https://asc.fasb.org/extlink&oid=123455525&loc=d3e2207-128464 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=128092470&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=128092470&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.Fact.4) -URI https://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(2)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
Name: | us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount after offset of short term borrowing where a bank borrows, at the federal funds rate, from another bank and securities that an entity sells and agrees to repurchase at a specified date for a specified price. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13(1)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 + Details
Name: | us-gaap_FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of writeoff of financing receivable, charged against allowance for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 Reference 3: 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_FinancingReceivableAllowanceForCreditLossesWriteOffs
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition 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. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)(1)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI https://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 55 -Paragraph 24 -URI https://asc.fasb.org/extlink&oid=122137925&loc=d3e14258-109268 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 Reference 7: 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(15)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_Goodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585 + Details
Name: | us-gaap_PaymentsOfDebtIssuanceCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=ssb_AtlanticCapitalBancsharesIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementScenarioAxis=ssb_AsRecordedByCsflMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementScenarioAxis=ssb_InitialFairValueAdjustmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementScenarioAxis=ssb_SubsequentFairValueAdjustmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |