Loans - Additional Information (Detail) (USD $)	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans to directors and executive officers	$ 4,771,000	$ 4,891,000
New loans to directors and executive officers	2,194,000
Reduction in loans receivable from directors and executive officers	2,314,000
Loans pledged as collateral	50,000,000	50,000,000
Loan Portfolio consist of commercial loan and Commercial Real Estate Loans	50.00%
Loan Portfolio consist of Consumer and residential real estate loans	50.00%
Minimum source of repayment from third party	50.00%
Nonaccrual loans and loans past due ninety days	27,672,000	40,955,000	28,526,000
Reduction in interest income	$ 1,000,000	$ 1,900,000	$ 1,200,000
Maximum [Member] \| Substandard [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Specific allowance on substandard loans, maximum percentage	30.00%

Financing receivable recorded investment nonaccrual status reduction in interest income.

No definition available.

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- Definition

Loans and leases receivable allowance percentage of principal balance.

+ References

No definition available.

+ Details

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- Definition

Minimum percentage of loan repayment from third party.

+ References

No definition available.

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- Definition

Proportion of commercial loan and commercial real estate loans.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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- Definition

Proportion of consumer and residential real estate loans in portfolio.

+ References

No definition available.

+ Details

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Namespace Prefix:	sbcf_
Data Type:	num:percentItemType
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- Definition

Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 7

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5111-111524

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- Definition

For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(e))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Subparagraph e

-Article 9

+ Details

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- Definition

Reflects the amount of new advances made to related parties in the form of loan and lease receivables.

+ References

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- Definition

Reflects the amount of collections received from related parties to reduce the carrying amounts of loans and leases receivable due from them.

+ References

+ Details

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- Definition

Carrying amount as of the balance sheet date of loans that have been pledged as collateral for borrowings. If the secured party has the right by contract or custom to sell or re-pledge the collateral, then the debtor reclassifies that asset and report that asset in its statement of financial position separately from other assets not so encumbered.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5086-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 30

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6467456&loc=d3e113888-111728

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