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FAIR VALUE - Additional Information (Details) (USD $)
3 Months Ended
Mar. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Valuation Write Downs $ 1,800,000sbcf_ValuationWriteDowns
Capitalization Rates Utilized To Determine Fair Value Of Underlying Collateral Averaged Percentage 8.10%sbcf_CapitalizationRatesUtilizedToDetermineFairValueOfUnderlyingCollateralAveragedPercentage
Loans Receivable [Member]  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 0us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= us-gaap_LoansReceivableMember
FairValue Measurement With Unobservable Inputs Reconciliation Liability Transfers Charge Offs 0sbcf_FairvalueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersChargeOffs
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= us-gaap_LoansReceivableMember
Other Real Estate Owned And Other Reductions 0sbcf_OtherRealEstateOwnedAndOtherReductions
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= us-gaap_LoansReceivableMember
Valuation Write Downs 0sbcf_ValuationWriteDowns
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= us-gaap_LoansReceivableMember
Fair Value, Measurements, Nonrecurring [Member]  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Other Real Estate Owned And Other Reductions 0sbcf_OtherRealEstateOwnedAndOtherReductions
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsNonrecurringMember
Other Real Estate Owned [Member]  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 0.5us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= sbcf_OtherRealEstateOwnedMember
Other Real Estate Owned And Other Reductions $ 0sbcf_OtherRealEstateOwnedAndOtherReductions
/ us-gaap_ValuationAllowancesAndReservesTypeAxis
= sbcf_OtherRealEstateOwnedMember