IMPAIRED LOANS AND ALLOWANCE FOR LOAN LOSSES - Modified Loans (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015 Number
Financing Receivable, Modifications [Line Items]
Number of Contracts	2
Pre-Modification Outstanding Recorded Investment	$ 911
Post-Modification Outstanding Recorded Investment	859
Specific Reserve Recorded	0
Valuation Allowance Recorded	52
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts	2
Pre-Modification Outstanding Recorded Investment	911
Post-Modification Outstanding Recorded Investment	859
Specific Reserve Recorded	0
Valuation Allowance Recorded	$ 52

Financing receivable modified specific reserve recorded troubled debt restructuring.

No definition available.

Name:	sbcf_FinancingReceivableModifiedSpecificReserveRecordedTroubledDebtRestructuring
Namespace Prefix:	sbcf_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Financing receivable modified valuation allowance recorded trouble debt restructuring.

+ References

No definition available.

+ Details

Name:	sbcf_Financingreceivablemodifiedvaluationallowancerecordedtroubledebtrestructuring
Namespace Prefix:	sbcf_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_FinancingReceivableModificationsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 33

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953676-111524

+ Details

Name:	us-gaap_FinancingReceivableModificationsNumberOfContracts2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

+ Details

Name:	us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

+ Details

Name:	us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_FinancingReceivableTroubledDebtRestructuringAxis=us-gaap_CommercialRealEstateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: