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.

No definition available.

+ Details

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

- Definition

Fair value at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 15
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82894507&loc=d3e13503-111538

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and allowance for loan losses). This relates to loans not accounted for debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 15
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82894507&loc=d3e13503-111538

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_BusinessAcquisitionAxis=sbcf_GulfShoreBancSharesIncMember
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_CommercialLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=sbcf_SingleFamilyResidentialRealEstateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=sbcf_ConstructionDevelopmentLandMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=sbcf_ConsumerAndOtherLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=sbcf_PurchasedCreditImpairedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=sbcf_NorthstarBankMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=sbcf_PalmBeachCommunityBankMember
Namespace Prefix:
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Period Type:

Business Combinations - Fair Value of Acquired Loans (Details) - USD ($) $ in Thousands	Nov. 03, 2017	Oct. 20, 2017	Apr. 07, 2017
Gulf Shore Banc shares Inc
Business Acquisition [Line Items]
Book Balance			$ 256,876
Fair Value			250,876
Gulf Shore Banc shares Inc \| Commercial real estate
Business Acquisition [Line Items]
Book Balance			106,729
Fair Value			103,905
Gulf Shore Banc shares Inc \| Commercial loans
Business Acquisition [Line Items]
Book Balance			32,137
Fair Value			32,247
Gulf Shore Banc shares Inc \| Single family residential real estate
Business Acquisition [Line Items]
Book Balance			101,281
Fair Value			99,598
Gulf Shore Banc shares Inc \| Construction/development/land
Business Acquisition [Line Items]
Book Balance			13,175
Fair Value			11,653
Gulf Shore Banc shares Inc \| Consumer and other loans
Business Acquisition [Line Items]
Book Balance			3,554
Fair Value			3,473
Gulf Shore Banc shares Inc \| Purchased credit-impaired
Business Acquisition [Line Items]
Book Balance			0
Fair Value			$ 0
NorthStar Bank
Business Acquisition [Line Items]
Book Balance		$ 143,444
Fair Value		136,832
NorthStar Bank \| Commercial real estate
Business Acquisition [Line Items]
Book Balance		73,139
Fair Value		69,554
NorthStar Bank \| Commercial loans
Business Acquisition [Line Items]
Book Balance		31,200
Fair Value		30,854
NorthStar Bank \| Single family residential real estate
Business Acquisition [Line Items]
Book Balance		15,111
Fair Value		15,096
NorthStar Bank \| Construction/development/land
Business Acquisition [Line Items]
Book Balance		11,706
Fair Value		10,390
NorthStar Bank \| Consumer and other loans
Business Acquisition [Line Items]
Book Balance		6,761
Fair Value		6,645
NorthStar Bank \| Purchased credit-impaired
Business Acquisition [Line Items]
Book Balance		5,527
Fair Value		$ 4,293
Palm Beach Community Bank
Business Acquisition [Line Items]
Book Balance	$ 275,567
Fair Value	270,318
Palm Beach Community Bank \| Commercial real estate
Business Acquisition [Line Items]
Book Balance	134,705
Fair Value	132,089
Palm Beach Community Bank \| Commercial loans
Business Acquisition [Line Items]
Book Balance	36,076
Fair Value	35,876
Palm Beach Community Bank \| Single family residential real estate
Business Acquisition [Line Items]
Book Balance	30,153
Fair Value	30,990
Palm Beach Community Bank \| Construction/development/land
Business Acquisition [Line Items]
Book Balance	69,686
Fair Value	67,425
Palm Beach Community Bank \| Consumer and other loans
Business Acquisition [Line Items]
Book Balance	179
Fair Value	172
Palm Beach Community Bank \| Purchased credit-impaired
Business Acquisition [Line Items]
Book Balance	4,768
Fair Value	$ 3,766