IMPAIRED LOANS AND ALLOWANCE FOR LOAN LOSSES - Modified Loans (Details) $ in Thousands	6 Months Ended
Jun. 30, 2015 USD ($) Number	Jun. 30, 2014 USD ($) Number
Financing Receivable, Modifications [Line Items]
Number of Contracts \| Number	4	4
Pre-Modification Outstanding Recorded Investment	$ 985	$ 4,901
Post-Modification Outstanding Recorded Investment	929	4,539
Specific Reserve Recorded	0	0
Valuation Allowance Recorded	$ 56	$ 362
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts \| Number	1	3
Pre-Modification Outstanding Recorded Investment	$ 26	$ 601
Post-Modification Outstanding Recorded Investment	25	564
Specific Reserve Recorded	0	0
Valuation Allowance Recorded	$ 1	$ 37
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts \| Number	2	1
Pre-Modification Outstanding Recorded Investment	$ 911	$ 4,300
Post-Modification Outstanding Recorded Investment	859	3,975
Specific Reserve Recorded	0	0
Valuation Allowance Recorded	$ 52	$ 325
Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts \| Number	1
Pre-Modification Outstanding Recorded Investment	$ 48
Post-Modification Outstanding Recorded Investment	45
Specific Reserve Recorded	0
Valuation Allowance Recorded	$ 3

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

- 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_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=49124121&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_FinancialInstrumentAxis=us-gaap_ResidentialRealEstateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: