$SBCF
Seacoast Banking Corporation of Florida Stock $sbcf

$sbcf Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-K Financial Statement

#000073070820000015 Filed on February 27, 2020

Income Statement

Concept	2019 Q4	2019	2018 Q4
Revenue		$289.8M
YoY Change		20.06%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$1.500M	$6.421M	$1.700M
YoY Change	-11.76%	1.07%	6.25%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense		$46.21M
YoY Change		54.62%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$35.28M	$128.6M	$20.89M
YoY Change	68.88%	46.93%	-37.49%
Income Tax	$8.100M	$29.87M	$4.930M
% Of Pretax Income	22.96%	23.23%	23.6%
Net Earnings	$27.18M	$98.74M	$15.96M
YoY Change	70.3%	46.77%	22.3%
Net Earnings / Revenue		34.07%
Basic Earnings Per Share		$1.92
Diluted Earnings Per Share	$521.4K	$1.90	$311.2K
COMMON SHARES
Basic Shares Outstanding		51.45M shares
Diluted Shares Outstanding		52.03M shares

Balance Sheet

Concept	2019 Q4	2019	2018 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$124.5M		$116.0M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$66.62M	$92.80M	$71.02M
YoY Change	-6.21%	30.7%	6.19%
Goodwill	$205.3M		$204.8M
YoY Change	0.26%		38.74%
Intangibles	$20.07M		$25.98M
YoY Change	-22.75%		36.01%
Long-Term Investments
YoY Change
Other Assets	$141.7M	$16.50M	$128.1M
YoY Change	10.63%	-43.1%	9.89%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$7.109B	$7.109B	$6.748B
YoY Change	5.35%	5.35%	16.14%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses		$30.10M
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$86.10M	$86.10M	$214.3M
YoY Change	-59.82%	-59.82%	-0.83%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$86.10M	$30.10M	$214.3M
YoY Change	-59.82%	-85.95%	-0.83%
LONG-TERM LIABILITIES
Long-Term Debt	$71.10M	$71.10M	$70.80M
YoY Change	0.42%	0.42%	0.43%
Other Long-Term Liabilities	$65.91M	$35.80M	$41.03M
YoY Change	60.67%	-12.68%	36.16%
Total Long-Term Liabilities	$65.91M	$106.9M	$41.03M
YoY Change	60.67%	-4.38%	36.16%
TOTAL LIABILITIES
Total Short-Term Liabilities	$86.10M	$30.10M	$214.3M
Total Long-Term Liabilities	$65.91M	$106.9M	$41.03M
Total Liabilities	$6.123B	$6.123B	$5.883B
YoY Change	4.07%	4.07%	14.9%
SHAREHOLDERS EQUITY
Retained Earnings	$195.8M		$97.07M
YoY Change	101.72%		224.51%
Common Stock	$5.151M		$5.136M
YoY Change	0.29%		9.44%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$6.032M		$3.384M
YoY Change	78.25%		43.45%
Treasury Stock Shares	246.9K shares		153.7K shares
Shareholders Equity	$985.6M	$985.6M	$864.3M
YoY Change
Total Liabilities & Shareholders Equity	$7.109B	$7.109B	$6.748B
YoY Change	5.35%	5.35%	16.14%

Cashflow Statement

Concept	2019 Q4	2019	2018 Q4
OPERATING ACTIVITIES
Net Income	$27.18M	$98.74M	$15.96M
YoY Change	70.3%	46.77%	22.3%
Depreciation, Depletion And Amortization	$1.500M	$6.421M	$1.700M
YoY Change	-11.76%	1.07%	6.25%
Cash From Operating Activities	$42.40M	$117.7M	$44.70M
YoY Change	-5.15%	-9.15%	8840.0%
INVESTING ACTIVITIES
Capital Expenditures	-$200.0K	-$2.500M	-$400.0K
YoY Change	-50.0%	-37.5%	-73.33%
Acquisitions
YoY Change
Other Investing Activities	-$242.4M	-$318.8M	-$10.10M
YoY Change	2300.0%	86.87%	-116.61%
Cash From Investing Activities	-$242.6M	-$321.3M	-$10.60M
YoY Change	2188.68%	84.04%	-117.85%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$0.00
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	192.5M	$212.2M	-23.30M
YoY Change	-926.18%	312.48%	-69.22%
NET CHANGE
Cash From Operating Activities	42.40M	$117.7M	44.70M
Cash From Investing Activities	-242.6M	-$321.3M	-10.60M
Cash From Financing Activities	192.5M	$212.2M	-23.30M
Net Change In Cash	-7.700M	$8.580M	10.80M
YoY Change	-171.3%	33.09%	-168.35%
FREE CASH FLOW
Cash From Operating Activities	$42.40M	$117.7M	$44.70M
Capital Expenditures	-$200.0K	-$2.500M	-$400.0K
Free Cash Flow	$42.60M	$120.2M	$45.10M
YoY Change	-5.54%	-10.0%	2155.0%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2019	dei	Amendment Flag AmendmentFlag	false
CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0000730708
CY2018Q4	sbcf	Capital Conservation Buffer Rate CapitalConservationBufferRate	0.01875
CY2019Q4	sbcf	Capital Conservation Buffer Rate CapitalConservationBufferRate	0.025
CY2019Q4	sbcf	Loans And Leases Receivable Ratio Of Allowance To Total Loans Percentage LoansAndLeasesReceivableRatioOfAllowanceToTotalLoansPercentage	0.0068
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.10
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.10
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	120000000	shares
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	120000000	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	51514734	shares
CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	51760617	shares
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	51361079	shares
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	51513733	shares
CY2019Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	5600000	USD
CY2018Q4	us-gaap	Deferred Costs DeferredCosts	16900000	USD
CY2019Q4	us-gaap	Deferred Costs DeferredCosts	19900000	USD
CY2018Q4	us-gaap	Due From Affiliates DueFromAffiliates	0	USD
CY2018Q4	us-gaap	Land Land	18269000	USD
CY2019Q4	us-gaap	Land Land	18546000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	2000000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-96000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	6200000	USD
CY2018	us-gaap	Stock Issued During Period Shares Treasury Stock Reissued StockIssuedDuringPeriodSharesTreasuryStockReissued	0	shares
CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity File Number EntityFileNumber	0-13660
CY2018Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	153655	shares
CY2019Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	246884	shares
CY2019	dei	Document Annual Report DocumentAnnualReport	true
CY2019	dei	Entity Registrant Name EntityRegistrantName	Seacoast Banking Corporation of Florida
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	FL
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	59-2260678
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	815 Colorado Avenue,
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	Stuart
CY2019	dei	Entity Address State Or Province EntityAddressStateOrProvince	FL
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	34994
CY2019	dei	City Area Code CityAreaCode	(772)
CY2019	dei	Local Phone Number LocalPhoneNumber	287-4000
CY2019	dei	Security12b Title Security12bTitle	Common Stock
CY2019	dei	Trading Symbol TradingSymbol	SBCF
CY2019	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2019	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2019	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2019	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2019	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2019	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2019	dei	Entity Small Business EntitySmallBusiness	false
CY2019	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2019	dei	Entity Shell Company EntityShellCompany	false
CY2019Q2	dei	Entity Public Float EntityPublicFloat	1309158096	USD
CY2020Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	51523499	shares
CY2019	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	35354000	USD
CY2018	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	37860000	USD
CY2017	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	34442000	USD
CY2019	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	555000	USD
CY2018	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	884000	USD
CY2017	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	913000	USD
CY2019	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	250535000	USD
CY2018	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	199984000	USD
CY2017	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	153825000	USD
CY2019	sbcf	Interest On Federal Funds Sold And Other Investments InterestOnFederalFundsSoldAndOtherInvestments	3379000	USD
CY2018	sbcf	Interest On Federal Funds Sold And Other Investments InterestOnFederalFundsSoldAndOtherInvestments	2670000	USD
CY2017	sbcf	Interest On Federal Funds Sold And Other Investments InterestOnFederalFundsSoldAndOtherInvestments	2416000	USD
CY2019	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	289823000	USD
CY2018	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	241398000	USD
CY2017	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	191596000	USD
CY2019	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	16621000	USD
CY2018	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	8763000	USD
CY2017	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	3654000	USD
CY2019	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	21776000	USD
CY2018	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	11684000	USD
CY2017	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	4678000	USD
CY2019	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	1431000	USD
CY2018	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	1804000	USD
CY2017	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	781000	USD
CY2019	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	3010000	USD
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CY2017	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	3744000	USD
CY2019	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	3367000	USD
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CY2019	us-gaap	Interest Expense InterestExpense	46205000	USD
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CY2017	us-gaap	Interest Expense InterestExpense	15300000	USD
CY2019	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	243618000	USD
CY2018	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	211515000	USD
CY2017	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	176296000	USD
CY2019	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	10999000	USD
CY2018	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	11730000	USD
CY2017	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	5648000	USD
CY2019	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	232619000	USD
CY2018	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	199785000	USD
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CY2019	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	0	USD
CY2018	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	0	USD
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CY2019	us-gaap	Gain Loss On Investments GainLossOnInvestments	1217000	USD
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CY2017	us-gaap	Gain Loss On Investments GainLossOnInvestments	86000	USD
CY2019	sbcf	Non Interest Income Excluding Gain Loss On Loans Sale And Investments NonInterestIncomeExcludingGainLossOnLoansSaleAndInvestments	55515000	USD
CY2018	sbcf	Non Interest Income Excluding Gain Loss On Loans Sale And Investments NonInterestIncomeExcludingGainLossOnLoansSaleAndInvestments	50645000	USD
CY2017	sbcf	Non Interest Income Excluding Gain Loss On Loans Sale And Investments NonInterestIncomeExcludingGainLossOnLoansSaleAndInvestments	43230000	USD
CY2019	us-gaap	Noninterest Income NoninterestIncome	56732000	USD
CY2018	us-gaap	Noninterest Income NoninterestIncome	50022000	USD
CY2017	us-gaap	Noninterest Income NoninterestIncome	58469000	USD
CY2019	us-gaap	Noninterest Expense NoninterestExpense	160739000	USD
CY2018	us-gaap	Noninterest Expense NoninterestExpense	162273000	USD
CY2017	us-gaap	Noninterest Expense NoninterestExpense	149916000	USD
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CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	87534000	USD
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CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	36336000	USD
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CY2017	us-gaap	Net Income Loss NetIncomeLoss	42865000	USD
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.90
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CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52029000	shares
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CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	116264000	USD
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CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	46868000	USD
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CY2018Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	23709000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	124531000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	115951000	USD
CY2019Q4	sbcf	Time Deposits With Other Banks TimeDepositsWithOtherBanks	3742000	USD
CY2018Q4	sbcf	Time Deposits With Other Banks TimeDepositsWithOtherBanks	8243000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	946855000	USD
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CY2018Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	357949000	USD
CY2019Q4	us-gaap	Investments Investments	1208224000	USD
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CY2019Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	20029000	USD
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CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	35154000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	32423000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	5163250000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	4792791000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	66615000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	71024000	USD
CY2019Q4	us-gaap	Other Real Estate OtherRealEstate	12390000	USD
CY2018Q4	us-gaap	Other Real Estate OtherRealEstate	12802000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	205286000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	204753000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	20066000	USD
CY2018Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	25977000	USD
CY2019Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	126181000	USD
CY2018Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	123394000	USD
CY2019Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	16457000	USD
CY2018Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	28954000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	141740000	USD
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	128117000	USD
CY2019Q4	us-gaap	Assets Assets	7108511000	USD
CY2018Q4	us-gaap	Assets Assets	6747659000	USD
CY2019Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	1590493000	USD
CY2018Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	1569602000	USD
CY2019Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	1181732000	USD
CY2018Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	1014032000	USD
CY2019Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	519152000	USD
CY2018Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	493807000	USD
CY2019Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	1108363000	USD
CY2018Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	1173950000	USD
CY2019Q4	us-gaap	Time Deposits Less Than100000 TimeDepositsLessThan100000	504837000	USD
CY2018Q4	us-gaap	Time Deposits Less Than100000 TimeDepositsLessThan100000	513312000	USD
CY2019Q4	sbcf	Brokered Time Certificates BrokeredTimeCertificates	472857000	USD
CY2018Q4	sbcf	Brokered Time Certificates BrokeredTimeCertificates	220594000	USD
CY2019Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	207319000	USD
CY2018Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	191943000	USD
CY2019Q4	us-gaap	Deposits Deposits	5584753000	USD
CY2018Q4	us-gaap	Deposits Deposits	5177240000	USD
CY2019Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	86121000	USD
CY2018Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	214323000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Consolidated Obligations FederalHomeLoanBankConsolidatedObligations	315000000	USD
CY2018Q4	us-gaap	Federal Home Loan Bank Consolidated Obligations FederalHomeLoanBankConsolidatedObligations	380000000	USD
CY2019Q4	us-gaap	Subordinated Debt SubordinatedDebt	71085000	USD
CY2018Q4	us-gaap	Subordinated Debt SubordinatedDebt	70804000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	65913000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	41025000	USD
CY2019Q4	us-gaap	Liabilities Liabilities	6122872000	USD
CY2018Q4	us-gaap	Liabilities Liabilities	5883392000	USD
CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2018Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	5151000	USD
CY2018Q4	us-gaap	Common Stock Value CommonStockValue	5136000	USD
CY2019Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	786242000	USD
CY2018Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	778501000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	195813000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	97074000	USD
CY2019Q4	us-gaap	Treasury Stock Value TreasuryStockValue	6032000	USD
CY2018Q4	us-gaap	Treasury Stock Value TreasuryStockValue	3384000	USD
CY2019Q4	sbcf	Stockholders Equity Before Accumulated Other Comprehensive Income StockholdersEquityBeforeAccumulatedOtherComprehensiveIncome	981174000	USD
CY2018Q4	sbcf	Stockholders Equity Before Accumulated Other Comprehensive Income StockholdersEquityBeforeAccumulatedOtherComprehensiveIncome	877327000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	4465000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-13060000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	985639000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	459000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	35827000	USD
CY2019	us-gaap	Marketable Securities Realized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairments	1031000	USD
CY2018	us-gaap	Marketable Securities Realized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairments	-485000	USD
CY2017	us-gaap	Marketable Securities Realized Gain Loss Excluding Other Than Temporary Impairments MarketableSecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairments	86000	USD
CY2019	us-gaap	Depreciation Depreciation	6421000	USD
CY2019	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	0	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	42865000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	6791000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	864267000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	7108511000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	6747659000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	98739000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	67275000	USD
CY2018	us-gaap	Depreciation Depreciation	6353000	USD
CY2017	us-gaap	Depreciation Depreciation	5614000	USD
CY2019	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-2548000	USD
CY2018	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-3196000	USD
CY2017	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-3977000	USD
CY2019	sbcf	Operating Lease Right Of Use Asset Amortization OperatingLeaseRightOfUseAssetAmortization	4117000	USD
CY2019	sbcf	Other Accretion Amortization Net OtherAccretionAmortizationNet	2005000	USD
CY2018	sbcf	Other Accretion Amortization Net OtherAccretionAmortizationNet	1158000	USD
CY2017	sbcf	Other Accretion Amortization Net OtherAccretionAmortizationNet	697000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	7243000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	7823000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	5267000	USD
CY2019	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	329177000	USD
CY2018	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	303928000	USD
CY2017	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	213027000	USD
CY2019	sbcf	Sale Of Loans Designated Held For Sale SaleOfLoansDesignatedHeldForSale	333591000	USD
CY2018	sbcf	Sale Of Loans Designated Held For Sale SaleOfLoansDesignatedHeldForSale	326328000	USD
CY2017	sbcf	Sale Of Loans Designated Held For Sale SaleOfLoansDesignatedHeldForSale	211091000	USD
CY2019	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	10999000	USD
CY2018	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	11730000	USD
CY2017	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	5648000	USD
CY2018	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	0	USD
CY2017	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	15153000	USD
CY2019	us-gaap	Gain Loss On Sales Of Consumer Loans GainLossOnSalesOfConsumerLoans	9794000	USD
CY2018	us-gaap	Gain Loss On Sales Of Consumer Loans GainLossOnSalesOfConsumerLoans	8961000	USD
CY2017	us-gaap	Gain Loss On Sales Of Consumer Loans GainLossOnSalesOfConsumerLoans	7038000	USD
CY2019	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	432000	USD
CY2018	sbcf	Bank Owned Life Insurance Benefits BankOwnedLifeInsuranceBenefits	280000	USD
CY2018	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	107000	USD
CY2019	us-gaap	Proceeds From Sale And Maturity Of Held To Maturity Securities ProceedsFromSaleAndMaturityOfHeldToMaturitySecurities	4501000	USD
CY2018	us-gaap	Proceeds From Sale And Maturity Of Held To Maturity Securities ProceedsFromSaleAndMaturityOfHeldToMaturitySecurities	4310000	USD
CY2017	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	711000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-511000	USD
CY2018	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-1235000	USD
CY2017	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-2270000	USD
CY2019	sbcf	Bank Owned Life Insurance Benefits BankOwnedLifeInsuranceBenefits	956000	USD
CY2017	sbcf	Bank Owned Life Insurance Benefits BankOwnedLifeInsuranceBenefits	0	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	5614000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-10331000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	5506000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-4206000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	8827000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-21432000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	117745000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	129608000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	48909000	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	101674000	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	141223000	USD
CY2017	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	211173000	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	42495000	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	58315000	USD
CY2017	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	86460000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	202724000	USD
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	64366000	USD
CY2017	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	235613000	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	309461000	USD
CY2018	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	104650000	USD
CY2017	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	371926000	USD
CY2019	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	0	USD
CY2018	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	0	USD
CY2017	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	131439000	USD
CY2017	us-gaap	Proceeds From Sale And Maturity Of Held To Maturity Securities ProceedsFromSaleAndMaturityOfHeldToMaturitySecurities	4720000	USD
CY2019	us-gaap	Payments For Proceeds From Other Loans And Leases PaymentsForProceedsFromOtherLoansAndLeases	109614000	USD
CY2018	us-gaap	Payments For Proceeds From Other Loans And Leases PaymentsForProceedsFromOtherLoansAndLeases	365816000	USD
CY2017	us-gaap	Payments For Proceeds From Other Loans And Leases PaymentsForProceedsFromOtherLoansAndLeases	328868000	USD
CY2019	us-gaap	Proceeds From Sale Of Loans Held For Investment ProceedsFromSaleOfLoansHeldForInvestment	0	USD
CY2018	us-gaap	Proceeds From Sale Of Loans Held For Investment ProceedsFromSaleOfLoansHeldForInvestment	0	USD
CY2017	us-gaap	Proceeds From Sale Of Loans Held For Investment ProceedsFromSaleOfLoansHeldForInvestment	106815000	USD
CY2019	us-gaap	Payments To Acquire Loans Held For Investment PaymentsToAcquireLoansHeldForInvestment	270791000	USD
CY2018	us-gaap	Payments To Acquire Loans Held For Investment PaymentsToAcquireLoansHeldForInvestment	19541000	USD
CY2017	us-gaap	Payments To Acquire Loans Held For Investment PaymentsToAcquireLoansHeldForInvestment	55352000	USD
CY2019	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	6509000	USD
CY2018	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	10072000	USD
CY2017	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	6069000	USD
CY2019	us-gaap	Proceeds From Sale Of Federal Reserve Stock ProceedsFromSaleOfFederalReserveStock	74120000	USD
CY2018	us-gaap	Proceeds From Sale Of Federal Reserve Stock ProceedsFromSaleOfFederalReserveStock	44731000	USD
CY2017	us-gaap	Proceeds From Sale Of Federal Reserve Stock ProceedsFromSaleOfFederalReserveStock	48295000	USD
CY2019	us-gaap	Payments To Acquire Federal Reserve Stock PaymentsToAcquireFederalReserveStock	75193000	USD
CY2018	us-gaap	Payments To Acquire Federal Reserve Stock PaymentsToAcquireFederalReserveStock	51505000	USD
CY2017	us-gaap	Payments To Acquire Federal Reserve Stock PaymentsToAcquireFederalReserveStock	42680000	USD
CY2019	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	0	USD
CY2018	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	0	USD
CY2017	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	6180000	USD
CY2019	sbcf	Proceeds From Sale Of Marketable Securities ProceedsFromSaleOfMarketableSecurities	0	USD
CY2018	sbcf	Proceeds From Sale Of Marketable Securities ProceedsFromSaleOfMarketableSecurities	21333000	USD
CY2017	sbcf	Proceeds From Sale Of Marketable Securities ProceedsFromSaleOfMarketableSecurities	0	USD
CY2019	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	14218000	USD
CY2018	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	4232000	USD
CY2017	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	3609000	USD
CY2019	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	0	USD
CY2018	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	0	USD
CY2017	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	30000000	USD
CY2019	sbcf	Net Cash From Acquition Net Of Paid For Prefrred Stock NetCashFromAcquitionNetOfPaidForPrefrredStock	0	USD
CY2018	sbcf	Net Cash From Acquition Net Of Paid For Prefrred Stock NetCashFromAcquitionNetOfPaidForPrefrredStock	22349000	USD
CY2017	sbcf	Net Cash From Acquition Net Of Paid For Prefrred Stock NetCashFromAcquitionNetOfPaidForPrefrredStock	23825000	USD
CY2019	sbcf	Additions To Bank Premises And Equipment AdditionsToBankPremisesAndEquipment	2523000	USD
CY2018	sbcf	Additions To Bank Premises And Equipment AdditionsToBankPremisesAndEquipment	4019000	USD
CY2017	sbcf	Additions To Bank Premises And Equipment AdditionsToBankPremisesAndEquipment	5710000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-321341000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-174600000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-245576000	USD
CY2019	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	407513000	USD
CY2018	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-39769000	USD
CY2017	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	333049000	USD
CY2019	us-gaap	Increase Decrease In Federal Funds Purchased And Securities Sold Under Agreements To Repurchase Net IncreaseDecreaseInFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseNet	-128202000	USD
CY2018	us-gaap	Increase Decrease In Federal Funds Purchased And Securities Sold Under Agreements To Repurchase Net IncreaseDecreaseInFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseNet	-1771000	USD
CY2017	us-gaap	Increase Decrease In Federal Funds Purchased And Securities Sold Under Agreements To Repurchase Net IncreaseDecreaseInFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseNet	11892000	USD
CY2019	us-gaap	Increase Decrease In Loans From Other Federal Home Loan Banks IncreaseDecreaseInLoansFromOtherFederalHomeLoanBanks	-67000000	USD
CY2018	us-gaap	Increase Decrease In Loans From Other Federal Home Loan Banks IncreaseDecreaseInLoansFromOtherFederalHomeLoanBanks	32000000	USD
CY2017	us-gaap	Increase Decrease In Loans From Other Federal Home Loan Banks IncreaseDecreaseInLoansFromOtherFederalHomeLoanBanks	-204000000	USD
CY2019	sbcf	Repayments Of Loans Federal Home Loan Banks Maturities Greater Than Three Months RepaymentsOfLoansFederalHomeLoanBanksMaturitiesGreaterThanThreeMonths	63000000	USD
CY2018	sbcf	Repayments Of Loans Federal Home Loan Banks Maturities Greater Than Three Months RepaymentsOfLoansFederalHomeLoanBanksMaturitiesGreaterThanThreeMonths	0	USD
CY2017	sbcf	Repayments Of Loans Federal Home Loan Banks Maturities Greater Than Three Months RepaymentsOfLoansFederalHomeLoanBanksMaturitiesGreaterThanThreeMonths	0	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	13200000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	400000	USD
CY2019	sbcf	Operating Lease Right Of Use Assets Initial Recognition OperatingLeaseRightOfUseAssetsInitialRecognition	30301000	USD
CY2019	sbcf	Operating Lease Liability Initial Recognition OperatingLeaseLiabilityInitialRecognition	34627000	USD
CY2017	sbcf	Increase Decreasein Loansfrom Federal Home Loan Banks Maturities Greater Than Three Months IncreaseDecreaseinLoansfromFederalHomeLoanBanksMaturitiesGreaterThanThreeMonths	0	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	2135000	USD
CY2019	sbcf	Increase Decreasein Loansfrom Federal Home Loan Banks Maturities Greater Than Three Months IncreaseDecreaseinLoansfromFederalHomeLoanBanksMaturitiesGreaterThanThreeMonths	65000000	USD
CY2018	sbcf	Increase Decreasein Loansfrom Federal Home Loan Banks Maturities Greater Than Three Months IncreaseDecreaseinLoansfromFederalHomeLoanBanksMaturitiesGreaterThanThreeMonths	60000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	979000	USD
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	55000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	55641000	USD
CY2019	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	0	USD
CY2018	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	0	USD
CY2017	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	0	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	212176000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	51439000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	196527000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	8580000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	6447000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-140000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	115951000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	109504000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	109644000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	124531000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	115951000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	109504000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	46130000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	28301000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	15125000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	16000000	USD
CY2019	sbcf	Transfer Of Debt Securities From Held To Maturity To Available For Sale TransferOfDebtSecuritiesFromHeldToMaturityToAvailableForSale	52796000	USD
CY2018	sbcf	Transfer Of Debt Securities From Held To Maturity To Available For Sale TransferOfDebtSecuritiesFromHeldToMaturityToAvailableForSale	0	USD
CY2017	sbcf	Transfer Of Debt Securities From Held To Maturity To Available For Sale TransferOfDebtSecuritiesFromHeldToMaturityToAvailableForSale	0	USD
CY2019	sbcf	Transfer From Loans To Other Real Estate Owned TransferFromLoansToOtherRealEstateOwned	5665000	USD
CY2018	sbcf	Transfer From Loans To Other Real Estate Owned TransferFromLoansToOtherRealEstateOwned	5549000	USD
CY2017	sbcf	Transfer From Loans To Other Real Estate Owned TransferFromLoansToOtherRealEstateOwned	1774000	USD
CY2019	sbcf	Transfers From Bank Premises To Other Real Estate Owned TransfersFromBankPremisesToOtherRealEstateOwned	0	USD
CY2018	sbcf	Transfers From Bank Premises To Other Real Estate Owned TransfersFromBankPremisesToOtherRealEstateOwned	9168000	USD
CY2017	sbcf	Transfers From Bank Premises To Other Real Estate Owned TransfersFromBankPremisesToOtherRealEstateOwned	1212000	USD
CY2019	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	801000	USD
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<div style="line-height:120%;padding-bottom:13px;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-style:italic;">Use of Estimates:</span><span style="font-family:inherit;font-size:10pt;"> The preparation of consolidated financial statements requires management to make judgments in the application of certain accounting policies that involve significant estimates and assumptions. The Company has established policies and control procedures that are intended to ensure valuation methods are well controlled and applied consistently from period to period. These estimates and assumptions, which may materially affect the reported amounts of certain assets, liabilities, revenues and expenses, are based on information available as of the date of the financial statements, and changes in this information over time and the use of revised estimates and assumptions could materially affect amounts reported in subsequent financial statements. Specific areas, among others, requiring the application of management’s estimates include determination of the allowance for loan losses, acquisition accounting and purchased loans, intangible assets and impairment testing, other fair value adjustments, other than temporary impairment of securities, income taxes and realization of deferred tax assets and contingent liabilities.</span></div>
CY2018	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	0	USD
CY2017	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	5664000	USD
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	435397000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	46868000	USD
CY2017	us-gaap	Tax Cuts And Jobs Act Of2017 Reclassification From Aoci To Retained Earnings Tax Effect TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsTaxEffect	0	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	5267000	USD
CY2017	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	-1138000	USD
CY2017	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1082000	USD
CY2017	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	55641000	USD
CY2017	sbcf	Stock Issued During Period Value Acquisitions Net Of Related Expense StockIssuedDuringPeriodValueAcquisitionsNetOfRelatedExpense	146547000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	689664000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	58316000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	7823000	USD
CY2018	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	-1031000	USD
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	2009000	USD
CY2018	sbcf	Stock Issued During Period Value Acquisitions Net Of Related Expense StockIssuedDuringPeriodValueAcquisitionsNetOfRelatedExpense	107486000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	864267000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	116264000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	7244000	USD
CY2019	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	-2668000	USD
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	428000	USD
CY2019	us-gaap	Stock Issued During Period Value Other StockIssuedDuringPeriodValueOther	104000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	985639000	USD
CY2019	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1	operating_segment
CY2019	sbcf	Number Of Traditional Branch Offices NumberOfTraditionalBranchOffices	48	traditional_bank_offices
CY2019	sbcf	Number Of Commercial Banking Centers NumberOfCommercialBankingCenters	9	commercial_banking_centers
CY2019	sbcf	Modified Loan Terms Minimum Performing Period For Borrowers ModifiedLoanTermsMinimumPerformingPeriodForBorrowers	P6M
CY2019	sbcf	Loan And Leases Due Period For Discontinuation Of Interest Accrual LoanAndLeasesDuePeriodForDiscontinuationOfInterestAccrual	P90D
CY2019	sbcf	Consumer Loans Charged Off Period ConsumerLoansChargedOffPeriod	P120D
CY2019Q4	sbcf	Average Reserve Balance Required To Be Maintained With Federal Reserve Bank AverageReserveBalanceRequiredToBeMaintainedWithFederalReserveBank	38700000	USD
CY2018Q4	sbcf	Average Reserve Balance Required To Be Maintained With Federal Reserve Bank AverageReserveBalanceRequiredToBeMaintainedWithFederalReserveBank	0	USD
CY2019Q4	sbcf	Average Reserve Balance Maintained With Federal Reserve Bank AverageReserveBalanceMaintainedWithFederalReserveBank	7900000	USD
CY2018Q4	sbcf	Average Reserve Balance Maintained With Federal Reserve Bank AverageReserveBalanceMaintainedWithFederalReserveBank	900000	USD
CY2019Q4	sbcf	Maximum Amount Available For Transfer Of Loans MaximumAmountAvailableForTransferOfLoans	83100000	USD
CY2019Q4	us-gaap	Due From Affiliates DueFromAffiliates	0	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	940765000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	8764000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	2674000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	946855000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Amortized Cost Before Other Than Temporary Impairment HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment	261369000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	2717000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	1873000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	262213000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	882872000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1306000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	18347000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	865831000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Amortized Cost Before Other Than Temporary Impairment HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment	357949000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	277000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	8331000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	349895000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	202700000	USD
CY2019	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	2900000	USD
CY2019	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	1800000	USD
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	64400000	USD
CY2018	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	200000	USD
CY2018	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	700000	USD
CY2017	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	235600000	USD
CY2017	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	1600000	USD
CY2017	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	1500000	USD
CY2019Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	261369000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	262213000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	946855000	USD
CY2019Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	312988000	USD
CY2019Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	2041000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	940765000	USD
CY2019Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	214951000	USD
CY2019Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	2506000	USD
CY2019Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	527939000	USD
CY2019Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	4547000	USD
CY2018Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	478423000	USD
CY2018Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	7140000	USD
CY2018Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	646354000	USD
CY2018Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	19538000	USD
CY2018Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	1124777000	USD
CY2018Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	26678000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Stock And Federal Reserve Bank Stock FederalHomeLoanBankStockAndFederalReserveBankStock	44300000	USD
CY2019Q4	us-gaap	Other Assets OtherAssets	6400000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	5198404000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	4825214000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	5163098000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	26955000	USD
CY2019Q4	us-gaap	Notes Receivable Net NotesReceivableNet	5198404000	USD
CY2018Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	4775965000	USD
CY2018Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	26476000	USD
CY2018Q4	us-gaap	Notes Receivable Net NotesReceivableNet	4825214000	USD
CY2019	sbcf	Financing Receivable Recorded Investment Nonaccrual Status Reduction In Interest Income FinancingReceivableRecordedInvestmentNonaccrualStatusReductionInInterestIncome	400000	USD
CY2018	sbcf	Financing Receivable Recorded Investment Nonaccrual Status Reduction In Interest Income FinancingReceivableRecordedInvestmentNonaccrualStatusReductionInInterestIncome	1000000.0	USD
CY2017	sbcf	Financing Receivable Recorded Investment Nonaccrual Status Reduction In Interest Income FinancingReceivableRecordedInvestmentNonaccrualStatusReductionInInterestIncome	700000	USD
CY2019Q4	us-gaap	Notes Receivable Net NotesReceivableNet	5198404000	USD
CY2018Q4	us-gaap	Notes Receivable Net NotesReceivableNet	4825214000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	1700000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	900000	USD
CY2019	us-gaap	Loans And Leases Receivable Related Parties Additions LoansAndLeasesReceivableRelatedPartiesAdditions	0	USD
CY2018	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	4	contract
CY2018	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	200000	USD
CY2018Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	2924000	USD
CY2017Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	3699000	USD
CY2016Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	3807000	USD
CY2019	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Additions CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAdditions	0	USD
CY2018	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Additions CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAdditions	0	USD
CY2017	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Additions CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAdditions	763000	USD
CY2019	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Period Increase Decrease CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldPeriodIncreaseDecrease	0	USD
CY2018	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Period Increase Decrease CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldPeriodIncreaseDecrease	-43000	USD
CY2017	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Period Increase Decrease CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldPeriodIncreaseDecrease	-11000	USD
CY2019	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	1778000	USD
CY2018	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	1291000	USD
CY2017	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	1647000	USD
CY2019	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Reclassifications To From Nonaccretable Difference CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsToFromNonaccretableDifference	703000	USD
CY2018	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Reclassifications To From Nonaccretable Difference CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsToFromNonaccretableDifference	559000	USD
CY2017	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Reclassifications To From Nonaccretable Difference CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsToFromNonaccretableDifference	787000	USD
CY2019Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	1849000	USD
CY2018Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	2924000	USD
CY2017Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	3699000	USD
CY2019	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	9	contract
CY2019	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	4700000	USD
CY2019	sbcf	Payments For Loans In Default Number Of Payments PaymentsForLoansInDefaultNumberOfPayments	4	payment
CY2019	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	3200000	USD
CY2018	sbcf	Payments For Loans In Default Number Of Payments PaymentsForLoansInDefaultNumberOfPayments	0	payment
CY2017	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	1	contract
CY2017	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	100000	USD
CY2017	sbcf	Payments For Loans In Default Number Of Payments PaymentsForLoansInDefaultNumberOfPayments	0	payment
CY2019Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	36096000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	44100000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	2858000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	36700000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	46545000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	2728000	USD
CY2019Q4	sbcf	Troubled Debt Restructuring Outstanding TroubledDebtRestructuringOutstanding	11100000	USD
CY2018Q4	sbcf	Troubled Debt Restructuring Outstanding TroubledDebtRestructuringOutstanding	13300000	USD
CY2019	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	35600000	USD
CY2018	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	35300000	USD
CY2017	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	30900000	USD
CY2019	us-gaap	Loans And Leases Receivable Impaired Troubled Debt Interest Income LoansAndLeasesReceivableImpairedTroubledDebtInterestIncome	2000000.0	USD
CY2018	us-gaap	Loans And Leases Receivable Impaired Troubled Debt Interest Income LoansAndLeasesReceivableImpairedTroubledDebtInterestIncome	2000000.0	USD
CY2017	us-gaap	Loans And Leases Receivable Impaired Troubled Debt Interest Income LoansAndLeasesReceivableImpairedTroubledDebtInterestIncome	1500000	USD
CY2019	us-gaap	Loans And Leases Receivable Impaired Interest Income Recognized Change In Present Value Attributable To Passage Of Time LoansAndLeasesReceivableImpairedInterestIncomeRecognizedChangeInPresentValueAttributableToPassageOfTime	100000	USD
CY2018	us-gaap	Loans And Leases Receivable Impaired Interest Income Recognized Change In Present Value Attributable To Passage Of Time LoansAndLeasesReceivableImpairedInterestIncomeRecognizedChangeInPresentValueAttributableToPassageOfTime	200000	USD
CY2017	us-gaap	Loans And Leases Receivable Impaired Interest Income Recognized Change In Present Value Attributable To Passage Of Time LoansAndLeasesReceivableImpairedInterestIncomeRecognizedChangeInPresentValueAttributableToPassageOfTime	300000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	32423000	USD
CY2019	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	10999000	USD
CY2019	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	10559000	USD
CY2019	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	2420000	USD
CY2019	us-gaap	Allowance For Loan And Lease Losses Adjustments Net AllowanceForLoanAndLeaseLossesAdjustmentsNet	129000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	35154000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	27122000	USD
CY2018	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	11730000	USD
CY2018	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	8026000	USD
CY2018	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	1789000	USD
CY2018	us-gaap	Allowance For Loan And Lease Losses Adjustments Net AllowanceForLoanAndLeaseLossesAdjustmentsNet	192000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	32423000	USD
CY2016Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	23400000	USD
CY2017	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	5648000	USD
CY2017	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	4102000	USD
CY2017	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	2495000	USD
CY2017	us-gaap	Allowance For Loan And Lease Losses Adjustments Net AllowanceForLoanAndLeaseLossesAdjustmentsNet	319000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	27122000	USD
CY2019Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	36096000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	2858000	USD
CY2019Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	5149642000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	32296000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	5185738000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	35154000	USD
CY2018Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	36700000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	2728000	USD
CY2018Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	4774080000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	29695000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	4810780000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	32423000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	120384000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	53769000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	66615000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	121919000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	50895000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	71024000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	204753000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	147578000	USD
CY2016Q4	us-gaap	Goodwill Goodwill	64649000	USD
CY2019	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	533000	USD
CY2018	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	57175000	USD
CY2017	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	82929000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	205286000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	204753000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	147578000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	24807000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	18937000	USD
CY2016Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	14572000	USD
CY2019	sbcf	Finite Lived Intangible Assets Acquired Including Purchase Accounting Adjustments FiniteLivedIntangibleAssetsAcquiredIncludingPurchaseAccountingAdjustments	-676000	USD
CY2018	sbcf	Finite Lived Intangible Assets Acquired Including Purchase Accounting Adjustments FiniteLivedIntangibleAssetsAcquiredIncludingPurchaseAccountingAdjustments	10170000	USD
CY2017	sbcf	Finite Lived Intangible Assets Acquired Including Purchase Accounting Adjustments FiniteLivedIntangibleAssetsAcquiredIncludingPurchaseAccountingAdjustments	7726000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5826000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4300000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3361000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	18305000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	24807000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	18937000	USD
CY2019	us-gaap	Finite Lived Intangible Assets Remaining Amortization Period1 FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1	P47M
CY2018	us-gaap	Finite Lived Intangible Assets Remaining Amortization Period1 FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1	P58M
CY2017	us-gaap	Finite Lived Intangible Assets Remaining Amortization Period1 FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1	P63M
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	5700000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	4500000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	4000000.0	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	3300000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	600000	USD
CY2019Q4	sbcf	Mortgage Servicing Rights MortgageServicingRights	1800000	USD
CY2018Q4	sbcf	Mortgage Servicing Rights MortgageServicingRights	1100000	USD
CY2019	us-gaap	Shortterm Debt Maximum Amount Outstanding During Period ShorttermDebtMaximumAmountOutstandingDuringPeriod	193388000	USD
CY2018	us-gaap	Shortterm Debt Maximum Amount Outstanding During Period ShorttermDebtMaximumAmountOutstandingDuringPeriod	341213000	USD
CY2017	us-gaap	Shortterm Debt Maximum Amount Outstanding During Period ShorttermDebtMaximumAmountOutstandingDuringPeriod	216094000	USD
CY2019Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0117
CY2018Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0114
CY2017Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0071
CY2019	us-gaap	Shortterm Debt Average Outstanding Amount ShorttermDebtAverageOutstandingAmount	106142000	USD
CY2018	us-gaap	Shortterm Debt Average Outstanding Amount ShorttermDebtAverageOutstandingAmount	200839000	USD
CY2017	us-gaap	Shortterm Debt Average Outstanding Amount ShorttermDebtAverageOutstandingAmount	171686000	USD
CY2019	sbcf	Short Term Debt Weighted Average Interest Rate During Year ShortTermDebtWeightedAverageInterestRateDuringYear	0.0135
CY2018	sbcf	Short Term Debt Weighted Average Interest Rate During Year ShortTermDebtWeightedAverageInterestRateDuringYear	0.0090
CY2017	sbcf	Short Term Debt Weighted Average Interest Rate During Year ShortTermDebtWeightedAverageInterestRateDuringYear	0.0046
CY2019Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	2100000000	USD
CY2019Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	75261000	USD
CY2019Q4	sbcf	Trust Preferred Securities TrustPreferredSecurities	73000000	USD
CY2019Q4	sbcf	Common Equity Securities Issued By Trust CommonEquitySecuritiesIssuedByTrust	2261000	USD
CY2019Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	8195000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y7M6D
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2400000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2100000	USD
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1900000	USD
CY2013Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	4250000	shares
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	7244000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	7823000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	5267000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1723000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1911000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1966000	USD
CY2019Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Outstanding Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions	903779	shares
CY2019	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Remaining Contractual Term2 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2	P6Y1M6D
CY2019Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	633561	shares
CY2019Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1	19.82
CY2019Q4	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	300000	shares
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Discount From Market Price Purchase Date ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPricePurchaseDate	0.95
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	5570000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	1211000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	715000	USD
CY2019	us-gaap	Sublease Income SubleaseIncome	618000	USD
CY2019	us-gaap	Lease Cost LeaseCost	6878000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	26165000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	30098000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	5936000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	1224000	USD
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P8Y6M
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0470
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	5626000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	4965000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	4436000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	3725000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	3734000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	14498000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	36984000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	6886000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	30098000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	20954000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	9078000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	667000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1932000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	0	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	2808000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	7018000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	32791000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	4179000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	4163000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	2876000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	29873000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	20259000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	36336000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	27008000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	18381000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	27720000	USD
CY2019	sbcf	Effective Income Tax Rate Reconciliation Tax Law Changes Amount EffectiveIncomeTaxRateReconciliationTaxLawChangesAmount	0	USD
CY2018	sbcf	Effective Income Tax Rate Reconciliation Tax Law Changes Amount EffectiveIncomeTaxRateReconciliationTaxLawChangesAmount	0	USD
CY2017	sbcf	Effective Income Tax Rate Reconciliation Tax Law Changes Amount EffectiveIncomeTaxRateReconciliationTaxLawChangesAmount	8552000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	125000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	207000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	657000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	1282000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	667000	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	1445000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-1283000	USD
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-874000	USD
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-1007000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	72000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	33000	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	165000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-698000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-918000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-1027000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-36000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	0	USD
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	173000	USD
CY2019	sbcf	Current Federal Tax Benefit Provision Before Valuation Allowance CurrentFederalTaxBenefitProvisionBeforeValuationAllowance	23762000	USD
CY2018	sbcf	Current Federal Tax Benefit Provision Before Valuation Allowance CurrentFederalTaxBenefitProvisionBeforeValuationAllowance	16096000	USD
CY2017	sbcf	Current Federal Tax Benefit Provision Before Valuation Allowance CurrentFederalTaxBenefitProvisionBeforeValuationAllowance	33458000	USD
CY2019	sbcf	Current State And Local Tax Benefit Provision Before Valuation Allowance CurrentStateAndLocalTaxBenefitProvisionBeforeValuationAllowance	6111000	USD
CY2018	sbcf	Current State And Local Tax Benefit Provision Before Valuation Allowance CurrentStateAndLocalTaxBenefitProvisionBeforeValuationAllowance	4163000	USD
CY2017	sbcf	Current State And Local Tax Benefit Provision Before Valuation Allowance CurrentStateAndLocalTaxBenefitProvisionBeforeValuationAllowance	2878000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	29873000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	20259000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	36336000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	8949000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	8592000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	0	USD
CY2018Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	1670000	USD
CY2019Q4	sbcf	Deferred Tax Assets Other Real Estate Owned DeferredTaxAssetsOtherRealEstateOwned	8000	USD
CY2018Q4	sbcf	Deferred Tax Assets Other Real Estate Owned DeferredTaxAssetsOtherRealEstateOwned	207000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	2406000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	2547000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	3601000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	4699000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	1110000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	2912000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	530000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	0	USD
CY2019Q4	sbcf	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	7381000	USD
CY2018Q4	sbcf	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	0	USD
CY2018Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	4658000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	2458000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	2287000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	3106000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	7674000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other Loss Carryforwards DeferredTaxAssetsOtherLossCarryforwards	378000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other Loss Carryforwards DeferredTaxAssetsOtherLossCarryforwards	1627000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	29927000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	36873000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	29927000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	36873000	USD
CY2019Q4	sbcf	Deferred Tax Liabilities Deposit Base Intangible DeferredTaxLiabilitiesDepositBaseIntangible	4005000	USD
CY2018Q4	sbcf	Deferred Tax Liabilities Deposit Base Intangible DeferredTaxLiabilitiesDepositBaseIntangible	5706000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Unrealized Gains On Trading Securities DeferredTaxLiabilitiesUnrealizedGainsOnTradingSecurities	1210000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Unrealized Gains On Trading Securities DeferredTaxLiabilitiesUnrealizedGainsOnTradingSecurities	0	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	114000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	0	USD
CY2019Q4	sbcf	Deferred Tax Liabilities Operating Lease Right Of Use Asset DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset	6416000	USD
CY2018Q4	sbcf	Deferred Tax Liabilities Operating Lease Right Of Use Asset DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset	0	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	1725000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	2213000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	13470000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	7919000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	16457000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	28954000	USD
CY2019	sbcf	Unrealized Gains Resulting In Deferred Tax Liability UnrealizedGainsResultingInDeferredTaxLiability	5700000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Unrealized Gains On Trading Securities DeferredTaxLiabilitiesUnrealizedGainsOnTradingSecurities	1200000	USD
CY2018	sbcf	Unrealized Losses Resulting In Deferred Tax Asset UnrealizedLossesResultingInDeferredTaxAsset	17700000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	4700000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	16500000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	16500000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	16500000	USD
CY2019Q4	us-gaap	Income Tax Examination Penalties And Interest Accrued IncomeTaxExaminationPenaltiesAndInterestAccrued	0	USD
CY2019	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	900000	USD
CY2018	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	1000000.0	USD
CY2017	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	700000	USD
CY2019	sbcf	Affordable Housing Project Tax Credits AffordableHousingProjectTaxCredits	800000	USD
CY2019	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	900000	USD
CY2019Q4	sbcf	Affordable Housing Project Tax Benefits AffordableHousingProjectTaxBenefits	200000	USD
CY2018	sbcf	Affordable Housing Project Tax Credits AffordableHousingProjectTaxCredits	800000	USD
CY2018	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	1000000.0	USD
CY2018Q4	sbcf	Affordable Housing Project Tax Benefits AffordableHousingProjectTaxBenefits	200000	USD
CY2017	sbcf	Affordable Housing Project Tax Credits AffordableHousingProjectTaxCredits	600000	USD
CY2017	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	700000	USD
CY2017Q4	sbcf	Affordable Housing Project Tax Benefits AffordableHousingProjectTaxBenefits	300000	USD
CY2019	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	7400000	USD
CY2018	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	8300000	USD
CY2019Q4	sbcf	Affordable Housing Program Obligation Unfunded AffordableHousingProgramObligationUnfunded	500000	USD
CY2018Q4	sbcf	Affordable Housing Program Obligation Unfunded AffordableHousingProgramObligationUnfunded	3200000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2017Q4	us-gaap	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Deferred Tax Asset Provisional Income Tax Expense TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpense	8600000	USD
CY2019	us-gaap	Tax Cuts And Jobs Act Of2017 Measurement Period Adjustment Income Tax Expense Benefit TaxCutsAndJobsActOf2017MeasurementPeriodAdjustmentIncomeTaxExpenseBenefit	-200000	USD
CY2019	us-gaap	Communication Communication	2958000	USD
CY2019	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	1909000	USD
CY2018	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	1732000	USD
CY2017	us-gaap	Brokerage Commissions Revenue BrokerageCommissionsRevenue	1352000	USD
CY2019	sbcf	Marine Finance Revenues MarineFinanceRevenues	1054000	USD
CY2018	sbcf	Marine Finance Revenues MarineFinanceRevenues	1398000	USD
CY2017	sbcf	Marine Finance Revenues MarineFinanceRevenues	910000	USD
CY2019	sbcf	Interchange Income InterchangeIncome	13399000	USD
CY2018	sbcf	Interchange Income InterchangeIncome	12335000	USD
CY2017	sbcf	Interchange Income InterchangeIncome	10583000	USD
CY2019	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	3674000	USD
CY2018	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	4291000	USD
CY2017	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	3426000	USD
CY2019	sbcf	Small Business Administration Gains SmallBusinessAdministrationGains	2472000	USD
CY2018	sbcf	Small Business Administration Gains SmallBusinessAdministrationGains	2474000	USD
CY2017	sbcf	Small Business Administration Gains SmallBusinessAdministrationGains	579000	USD
CY2019	sbcf	Noninterest Income Others NoninterestIncomeOthers	10545000	USD
CY2018	sbcf	Noninterest Income Others NoninterestIncomeOthers	8352000	USD
CY2017	sbcf	Noninterest Income Others NoninterestIncomeOthers	6177000	USD
CY2019	sbcf	Non Interest Income Excluding Gain Loss On Loans Sale And Investments NonInterestIncomeExcludingGainLossOnLoansSaleAndInvestments	55515000	USD
CY2018	sbcf	Non Interest Income Excluding Gain Loss On Loans Sale And Investments NonInterestIncomeExcludingGainLossOnLoansSaleAndInvestments	50645000	USD
CY2017	sbcf	Non Interest Income Excluding Gain Loss On Loans Sale And Investments NonInterestIncomeExcludingGainLossOnLoansSaleAndInvestments	43230000	USD
CY2019	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	0	USD
CY2018	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	0	USD
CY2017	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	15153000	USD
CY2019	us-gaap	Gain Loss On Investments GainLossOnInvestments	1217000	USD
CY2018	us-gaap	Gain Loss On Investments GainLossOnInvestments	-623000	USD
CY2017	us-gaap	Gain Loss On Investments GainLossOnInvestments	86000	USD
CY2019	us-gaap	Noninterest Income NoninterestIncome	56732000	USD
CY2018	us-gaap	Noninterest Income NoninterestIncome	50022000	USD
CY2017	us-gaap	Noninterest Income NoninterestIncome	58469000	USD
CY2019	us-gaap	Salaries And Wages SalariesAndWages	73829000	USD
CY2018	us-gaap	Salaries And Wages SalariesAndWages	71111000	USD
CY2017	us-gaap	Salaries And Wages SalariesAndWages	65692000	USD
CY2019	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	13697000	USD
CY2018	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	12945000	USD
CY2017	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	11732000	USD
CY2019	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	15077000	USD
CY2018	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	16374000	USD
CY2017	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	14116000	USD
CY2018	us-gaap	Communication Communication	2481000	USD
CY2018	us-gaap	Occupancy Net OccupancyNet	13394000	USD
CY2017	us-gaap	Occupancy Net OccupancyNet	13290000	USD
CY2017	us-gaap	Communication Communication	2291000	USD
CY2019	us-gaap	Occupancy Net OccupancyNet	14284000	USD
CY2019	sbcf	Furniture And Equipment Expense FurnitureAndEquipmentExpense	6245000	USD
CY2018	sbcf	Furniture And Equipment Expense FurnitureAndEquipmentExpense	6744000	USD
CY2017	sbcf	Furniture And Equipment Expense FurnitureAndEquipmentExpense	6067000	USD
CY2019	us-gaap	Marketing Expense MarketingExpense	4161000	USD
CY2018	us-gaap	Marketing Expense MarketingExpense	5085000	USD
CY2017	us-gaap	Marketing Expense MarketingExpense	4784000	USD
CY2019	us-gaap	Professional Fees ProfessionalFees	8553000	USD
CY2018	us-gaap	Professional Fees ProfessionalFees	9961000	USD
CY2017	us-gaap	Professional Fees ProfessionalFees	11022000	USD
CY2019	sbcf	Federal Deposit Insurance Corporation Assessment FederalDepositInsuranceCorporationAssessment	881000	USD
CY2018	sbcf	Federal Deposit Insurance Corporation Assessment FederalDepositInsuranceCorporationAssessment	2195000	USD
CY2017	sbcf	Federal Deposit Insurance Corporation Assessment FederalDepositInsuranceCorporationAssessment	2326000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5826000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4300000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3361000	USD
CY2019	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	-51000	USD
CY2018	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	-461000	USD
CY2017	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	300000	USD
CY2019	us-gaap	Other Noninterest Expense OtherNoninterestExpense	15177000	USD
CY2018	us-gaap	Other Noninterest Expense OtherNoninterestExpense	17222000	USD
CY2017	us-gaap	Other Noninterest Expense OtherNoninterestExpense	15535000	USD
CY2019	us-gaap	Noninterest Expense NoninterestExpense	160739000	USD
CY2018	us-gaap	Noninterest Expense NoninterestExpense	162273000	USD
CY2017	us-gaap	Noninterest Expense NoninterestExpense	149916000	USD
CY2019	us-gaap	Stock Issued During Period Shares Treasury Stock Reissued StockIssuedDuringPeriodSharesTreasuryStockReissued	0	shares
CY2019Q4	sbcf	Commitment To Extend Credit Amount CommitmentToExtendCreditAmount	1018020000	USD
CY2018Q4	sbcf	Commitment To Extend Credit Amount CommitmentToExtendCreditAmount	982739000	USD
CY2019Q4	sbcf	Unfunded Limited Partner Equity Commitment UnfundedLimitedPartnerEquityCommitment	6011000	USD
CY2018Q4	sbcf	Unfunded Limited Partner Equity Commitment UnfundedLimitedPartnerEquityCommitment	7252000	USD
CY2019Q4	sbcf	Commitment To Extend Credit Amount CommitmentToExtendCreditAmount	1000000000.0	USD
CY2019Q4	sbcf	Unfunded Limited Partner Equity Commitment UnfundedLimitedPartnerEquityCommitment	6000000.0	USD
CY2019Q4	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	20029000	USD
CY2018Q4	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	11873000	USD
CY2019Q4	sbcf	Loans Held For Sale Accrued Interest LoansHeldForSaleAccruedInterest	19445000	USD
CY2018Q4	sbcf	Loans Held For Sale Accrued Interest LoansHeldForSaleAccruedInterest	11562000	USD
CY2019	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	584000	USD
CY2018	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	311000	USD
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	491000	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	483000	shares
CY2019Q4	sbcf	Capitalization Rates Utilized To Determine Fair Value Of Underlying Collateral Averaged Percentage CapitalizationRatesUtilizedToDetermineFairValueOfUnderlyingCollateralAveragedPercentage	0.074
CY2019	sbcf	Other Real Estate Owned And Other Reductions Classified As Level Three Transfers In OtherRealEstateOwnedAndOtherReductionsClassifiedAsLevelThreeTransfersIn	4700000	USD
CY2019Q4	sbcf	Other Real Estate Owned And Other Reductions OtherRealEstateOwnedAndOtherReductions	1900000	USD
CY2019	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	4000000.0	USD
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	274000	shares
CY2019	us-gaap	Net Income Loss NetIncomeLoss	98739000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	67275000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	42865000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	51449000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	47969000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	42613000	shares
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.92
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.40
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.01
CY2019	us-gaap	Net Income Loss NetIncomeLoss	98739000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	67275000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	42865000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	51449000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	47969000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	42613000	shares
CY2019	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	580000	shares
CY2018	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	779000	shares
CY2017	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	737000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52029000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	48748000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	43350000	shares
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.90
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.38
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.99
CY2019	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	1000000.0	USD
CY2018	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	9700000	USD
CY2017	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	12900000	USD
CY2018	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	238498000	USD
CY2017	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	223508000	USD
CY2018	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	82307000	USD
CY2017	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	62188000	USD
CY2018	us-gaap	Business Acquisition Pro Forma Earnings Per Share Basic BusinessAcquisitionProFormaEarningsPerShareBasic	1.61
CY2017	us-gaap	Business Acquisition Pro Forma Earnings Per Share Basic BusinessAcquisitionProFormaEarningsPerShareBasic	1.24
CY2018	us-gaap	Business Acquisition Pro Forma Earnings Per Share Diluted BusinessAcquisitionProFormaEarningsPerShareDiluted	1.58
CY2017	us-gaap	Business Acquisition Pro Forma Earnings Per Share Diluted BusinessAcquisitionProFormaEarningsPerShareDiluted	1.22

Files In Submission

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$SBCF
Seacoast Banking Corporation of Florida Stock $sbcf

2019 Q4 Form 10-K Financial Statement

#000073070820000015 Filed on February 27, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

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$SBCF Seacoast Banking Corporation of Florida Stock $sbcf

2019 Q4 Form 10-K Financial Statement

#000073070820000015 Filed on February 27, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SBCF
Seacoast Banking Corporation of Florida Stock $sbcf