XML 112 R49.htm IDEA: XBRL DOCUMENT v2.4.1.9
Securities - Additional Information (Details) (USD $)
 1 Months Ended 12 Months Ended
May 31, 2014
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Schedule of Available-for-sale Securities [Line Items]        
Proceeds from Sale of Available-for-sale Securities, Debt   $ 21,527,000us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt $ 67,330,000us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt $ 256,102,000us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt
Available-for-sale Securities, Gross Realized Gains   456,000us-gaap_AvailableForSaleSecuritiesGrossRealizedGains 792,000us-gaap_AvailableForSaleSecuritiesGrossRealizedGains 7,833,000us-gaap_AvailableForSaleSecuritiesGrossRealizedGains
Available-for-sale Securities, Gross Realized Losses   0us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses 373,000us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses 214,000us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses
Collateral Underlying Mortgage Investments Terms   30- and 15-year fixed and 10/1 adjustable rate mortgage    
Federal Home Loan Bank Stock and Federal Reserve Bank Stock   16,300,000us-gaap_FederalHomeLoanBankStockAndFederalReserveBankStock    
Cost Method Investments, Fair Value Disclosure   16,300,000us-gaap_CostMethodInvestmentsFairValueDisclosure    
Fair Value, Total   527,782,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue 511,470,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue  
Available-for-sale Securities 158,800,000us-gaap_AvailableForSaleSecurities      
Trading Securities, Unrealized Holding Loss 3,100,000us-gaap_TradingSecuritiesUnrealizedHoldingLoss      
United States Treasury Deposits and Other Public and Trust Deposits [Member] | Carrying Amount [Member]        
Schedule of Available-for-sale Securities [Line Items]        
Security Owned and Pledged as Collateral, Fair Value   107,660,000us-gaap_SecurityOwnedAndPledgedAsCollateralFairValue
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_FinancialInstrumentAxis
= sbcf_UnitedStatesTreasuryDepositsAndOtherPublicAndTrustDepositsMember		    
United States Treasury Deposits and Other Public and Trust Deposits [Member] | Fair Value [Member]        
Schedule of Available-for-sale Securities [Line Items]        
Security Owned and Pledged as Collateral, Fair Value   107,500,000us-gaap_SecurityOwnedAndPledgedAsCollateralFairValue
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
/ us-gaap_FinancialInstrumentAxis
= sbcf_UnitedStatesTreasuryDepositsAndOtherPublicAndTrustDepositsMember		    
Repurchase Agreements [Member] | Carrying Amount [Member]        
Schedule of Available-for-sale Securities [Line Items]        
Security Owned and Pledged as Collateral, Fair Value   232,677,000us-gaap_SecurityOwnedAndPledgedAsCollateralFairValue
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_RepurchaseAgreementsMember		    
Repurchase Agreements [Member] | Fair Value [Member]        
Schedule of Available-for-sale Securities [Line Items]        
Security Owned and Pledged as Collateral, Fair Value   227,620,000us-gaap_SecurityOwnedAndPledgedAsCollateralFairValue
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
/ us-gaap_FinancialInstrumentAxis
= us-gaap_RepurchaseAgreementsMember		    
Mortgage-backed Securities, Issued by Private Enterprises [Member]        
Schedule of Available-for-sale Securities [Line Items]        
Fair Value, Total   71,600,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue
/ us-gaap_DebtSecurityAxis
= us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember		 47,653,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue
/ us-gaap_DebtSecurityAxis
= us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember		  
Mortgage Backed Securities And Collateralized Mortgage Obligations Of Us Government Sponsored Entities [Member]        
Schedule of Available-for-sale Securities [Line Items]        
Fair Value, Total   329,100,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue
/ us-gaap_DebtSecurityAxis
= sbcf_MortgageBackedSecuritiesAndCollateralizedMortgageObligationsOfUsGovernmentSponsoredEntitiesMember		    
Collateralized Loan Obligations [Member]        
Schedule of Available-for-sale Securities [Line Items]        
Fair Value, Total   $ 125,200,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue
/ us-gaap_DebtSecurityAxis
= us-gaap_CollateralizedLoanObligationsMember		 $ 32,179,000us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue
/ us-gaap_DebtSecurityAxis
= us-gaap_CollateralizedLoanObligationsMember