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LOANS - Additional Information (Details) (Maximum [Member], Substandard [Member])
3 Months Ended
Mar. 31, 2015
Maximum [Member] | Substandard [Member]
 
Financing Receivable, Recorded Investment, Past Due [Line Items]  
Specific allowance on substandard loans, maximum percentage 30.00%sbcf_LoansAndLeasesReceivableAllowancePercentageOfPrincipalBalance
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember