$SBCF
Seacoast Banking Corporation of Florida Stock $sbcf

$sbcf Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000073070822000019 Filed on February 28, 2022

Income Statement

Concept	2021 Q4	2021	2020 Q4
Revenue		$284.2M
YoY Change		-0.97%
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	$1.400M	$5.482M	$1.500M
YoY Change	-6.67%	-8.94%	0.0%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense		$8.219M
YoY Change		-66.17%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$44.67M	$158.7M	$38.14M
YoY Change	17.12%	57.82%	8.11%
Income Tax	$8.340M	$34.34M	$8.790M
% Of Pretax Income	18.67%	21.63%	23.05%
Net Earnings	$36.33M	$124.4M	$29.35M
YoY Change	23.78%	59.98%	7.98%
Net Earnings / Revenue		43.77%
Basic Earnings Per Share		$2.20
Diluted Earnings Per Share	$615.4K	$2.18	$526.5K
COMMON SHARES
Basic Shares Outstanding		56.59M shares
Diluted Shares Outstanding		57.09M shares

Balance Sheet

Concept	2021 Q4	2021	2020 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$737.7M		$404.1M
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	$72.40M	$107.7M	$75.12M
YoY Change	-3.61%	6.95%	12.76%
Goodwill	$252.2M		$221.2M
YoY Change	14.01%		7.74%
Intangibles	$14.85M		$16.75M
YoY Change	-11.35%		-16.55%
Long-Term Investments
YoY Change
Other Assets	$201.9M	$27.30M	$162.2M
YoY Change	24.44%	15.68%	14.44%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$9.681B	$9.681B	$8.342B
YoY Change	16.05%	16.05%	17.36%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses		$38.30M
YoY Change		32.07%
Deferred Revenue
YoY Change
Short-Term Debt	$121.6M	$121.6M	$119.6M
YoY Change	1.67%	1.67%	38.91%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$121.6M	$38.30M	$119.6M
YoY Change	1.67%	32.07%	38.91%
LONG-TERM LIABILITIES
Long-Term Debt	$71.60M	$71.60M	$71.40M
YoY Change	0.28%	0.28%	0.42%
Other Long-Term Liabilities	$109.9M	$71.60M	$88.46M
YoY Change	24.24%	20.34%	34.2%
Total Long-Term Liabilities	$109.9M	$143.2M	$88.46M
YoY Change	24.24%	9.4%	34.2%
TOTAL LIABILITIES
Total Short-Term Liabilities	$121.6M	$38.30M	$119.6M
Total Long-Term Liabilities	$109.9M	$143.2M	$88.46M
Total Liabilities	$8.371B	$8.371B	$7.212B
YoY Change	16.07%	16.07%	17.79%
SHAREHOLDERS EQUITY
Retained Earnings	$358.6M		$256.7M
YoY Change	39.69%		31.09%
Common Stock	$5.850M		$5.524M
YoY Change	5.9%		7.24%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$10.57M		$8.285M
YoY Change	27.57%		37.35%
Treasury Stock Shares	405.1K shares		341.8K shares
Shareholders Equity	$1.311B	$1.311B	$1.130B
YoY Change
Total Liabilities & Shareholders Equity	$9.681B	$9.681B	$8.342B
YoY Change	16.05%	16.05%	17.36%

Cashflow Statement

Concept	2021 Q4	2021	2020 Q4
OPERATING ACTIVITIES
Net Income	$36.33M	$124.4M	$29.35M
YoY Change	23.78%	59.98%	7.98%
Depreciation, Depletion And Amortization	$1.400M	$5.482M	$1.500M
YoY Change	-6.67%	-8.94%	0.0%
Cash From Operating Activities	$49.80M	$154.6M	$42.40M
YoY Change	17.45%	154.85%	0.0%
INVESTING ACTIVITIES
Capital Expenditures	-$2.600M	-$4.300M	-$200.0K
YoY Change	1200.0%	168.75%	0.0%
Acquisitions
YoY Change
Other Investing Activities	-$280.7M	-$408.2M	$39.80M
YoY Change	-805.28%	19.74%	-116.42%
Cash From Investing Activities	-$283.3M	-$412.5M	$39.60M
YoY Change	-815.4%	20.44%	-116.32%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-256.5M	$591.6M	12.50M
YoY Change	-2152.0%	5.37%	-93.51%
NET CHANGE
Cash From Operating Activities	49.80M	$154.6M	42.40M
Cash From Investing Activities	-283.3M	-$412.5M	39.60M
Cash From Financing Activities	-256.5M	$591.6M	12.50M
Net Change In Cash	-490.0M	$333.6M	94.50M
YoY Change	-618.52%	19.35%	-1327.27%
FREE CASH FLOW
Cash From Operating Activities	$49.80M	$154.6M	$42.40M
Capital Expenditures	-$2.600M	-$4.300M	-$200.0K
Free Cash Flow	$52.40M	$158.9M	$42.60M
YoY Change	23.0%	155.21%	0.0%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0000730708
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherAssets
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherAssets
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherAssets
CY2021Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilities
CY2019Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilities
CY2020Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilities
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	0-13660
CY2021	dei	Entity Registrant Name EntityRegistrantName	Seacoast Banking Corporation of Florida
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	FL
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	59-2260678
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	815 Colorado Avenue,
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Stuart
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	FL
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	34994
CY2021	dei	City Area Code CityAreaCode	(772)
CY2021	dei	Local Phone Number LocalPhoneNumber	287-4000
CY2021	dei	Security12b Title Security12bTitle	Common Stock
CY2021	dei	Trading Symbol TradingSymbol	SBCF
CY2021	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2021	dei	Entity Small Business EntitySmallBusiness	false
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2021	dei	Entity Shell Company EntityShellCompany	false
CY2021Q2	dei	Entity Public Float EntityPublicFloat	1893140629	USD
CY2022Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	61198780	shares
CY2021	dei	Auditor Name AuditorName	Crowe LLP
CY2021	dei	Auditor Location AuditorLocation	Fort Lauderdale, Florida
CY2021	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	29206000	USD
CY2020	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	29718000	USD
CY2019	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	35354000	USD
CY2021	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	577000	USD
CY2020	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	454000	USD
CY2019	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	555000	USD
CY2021	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	251471000	USD
CY2020	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	254366000	USD
CY2019	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	250535000	USD
CY2021	sbcf	Interest On Federal Funds Sold And Other Investments InterestOnFederalFundsSoldAndOtherInvestments	2990000	USD
CY2020	sbcf	Interest On Federal Funds Sold And Other Investments InterestOnFederalFundsSoldAndOtherInvestments	2497000	USD
CY2019	sbcf	Interest On Federal Funds Sold And Other Investments InterestOnFederalFundsSoldAndOtherInvestments	3379000	USD
CY2021	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	284244000	USD
CY2020	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	287035000	USD
CY2019	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	289823000	USD
CY2021	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	3605000	USD
CY2020	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	6920000	USD
CY2019	us-gaap	Interest Expense Savings Deposits InterestExpenseSavingsDeposits	16621000	USD
CY2021	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	2788000	USD
CY2020	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	13365000	USD
CY2019	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	21776000	USD
CY2021	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	141000	USD
CY2020	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	283000	USD
CY2019	us-gaap	Interest Expense Securities Sold Under Agreements To Repurchase InterestExpenseSecuritiesSoldUnderAgreementsToRepurchase	1431000	USD
CY2021	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Short Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesShortTerm	0	USD
CY2020	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Short Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesShortTerm	1540000	USD
CY2019	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Short Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesShortTerm	3010000	USD
CY2021	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	1685000	USD
CY2020	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	2184000	USD
CY2019	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	3367000	USD
CY2021	us-gaap	Interest Expense InterestExpense	8219000	USD
CY2020	us-gaap	Interest Expense InterestExpense	24292000	USD
CY2019	us-gaap	Interest Expense InterestExpense	46205000	USD
CY2021	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	276025000	USD
CY2020	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	262743000	USD
CY2019	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	243618000	USD
CY2021	sbcf	Financing Receivable And Accrued Interest Receivable Credit Loss Provision Reversal FinancingReceivableAndAccruedInterestReceivableCreditLossProvisionReversal	-9421000	USD
CY2020	sbcf	Financing Receivable And Accrued Interest Receivable Credit Loss Provision Reversal FinancingReceivableAndAccruedInterestReceivableCreditLossProvisionReversal	38179000	USD
CY2019	sbcf	Financing Receivable And Accrued Interest Receivable Credit Loss Provision Reversal FinancingReceivableAndAccruedInterestReceivableCreditLossProvisionReversal	10999000	USD
CY2021	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	285446000	USD
CY2020	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	224564000	USD
CY2019	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	232619000	USD
CY2021	sbcf	Noninterest Income Servicing Charges NoninterestIncomeServicingCharges	9777000	USD
CY2020	sbcf	Noninterest Income Servicing Charges NoninterestIncomeServicingCharges	9429000	USD
CY2019	sbcf	Noninterest Income Servicing Charges NoninterestIncomeServicingCharges	11529000	USD
CY2021	sbcf	Interchange Income InterchangeIncome	16231000	USD
CY2020	sbcf	Interchange Income InterchangeIncome	13711000	USD
CY2019	sbcf	Interchange Income InterchangeIncome	13399000	USD
CY2021	us-gaap	Investment Banking Advisory Brokerage And Underwriting Fees And Commissions InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions	9628000	USD
CY2020	us-gaap	Investment Banking Advisory Brokerage And Underwriting Fees And Commissions InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions	7507000	USD
CY2019	us-gaap	Investment Banking Advisory Brokerage And Underwriting Fees And Commissions InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions	6352000	USD
CY2021	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	11782000	USD
CY2020	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	14696000	USD
CY2019	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	6490000	USD
CY2021	sbcf	Marine Finance Revenues MarineFinanceRevenues	665000	USD
CY2020	sbcf	Marine Finance Revenues MarineFinanceRevenues	690000	USD
CY2019	sbcf	Marine Finance Revenues MarineFinanceRevenues	1053000	USD
CY2021	sbcf	Small Business Administration Gains SmallBusinessAdministrationGains	1531000	USD
CY2020	sbcf	Small Business Administration Gains SmallBusinessAdministrationGains	685000	USD
CY2019	sbcf	Small Business Administration Gains SmallBusinessAdministrationGains	2472000	USD
CY2021	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	4154000	USD
CY2020	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	3561000	USD
CY2019	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	3674000	USD
CY2021	sbcf	Noninterest Income Small Business Investment Company Income NoninterestIncomeSmallBusinessInvestmentCompanyIncome	6778000	USD
CY2020	sbcf	Noninterest Income Small Business Investment Company Income NoninterestIncomeSmallBusinessInvestmentCompanyIncome	1373000	USD
CY2019	sbcf	Noninterest Income Small Business Investment Company Income NoninterestIncomeSmallBusinessInvestmentCompanyIncome	904000	USD
CY2021	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	10759000	USD
CY2020	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	8683000	USD
CY2019	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	9642000	USD
CY2021	sbcf	Non Interest Income Excluding Gain Loss On Loans Sale And Investments NonInterestIncomeExcludingGainLossOnLoansSaleAndInvestments	71305000	USD
CY2020	sbcf	Non Interest Income Excluding Gain Loss On Loans Sale And Investments NonInterestIncomeExcludingGainLossOnLoansSaleAndInvestments	60335000	USD
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CY2021	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	2200000	USD
CY2020	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	200000	USD
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CY2019	us-gaap	Gain Loss On Investments GainLossOnInvestments	1217000	USD
CY2021	us-gaap	Noninterest Income NoninterestIncome	70727000	USD
CY2020	us-gaap	Noninterest Income NoninterestIncome	61570000	USD
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CY2021	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	17873000	USD
CY2020	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	15544000	USD
CY2019	us-gaap	Other Labor Related Expenses OtherLaborRelatedExpenses	13697000	USD
CY2021	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	19919000	USD
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CY2021	us-gaap	Communication Communication	3223000	USD
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CY2020	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	185000	USD
CY2019	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	0	USD
CY2021	us-gaap	Other Noninterest Expense OtherNoninterestExpense	16341000	USD
CY2020	us-gaap	Other Noninterest Expense OtherNoninterestExpense	15835000	USD
CY2019	us-gaap	Other Noninterest Expense OtherNoninterestExpense	15177000	USD
CY2021	us-gaap	Noninterest Expense NoninterestExpense	197435000	USD
CY2020	us-gaap	Noninterest Expense NoninterestExpense	185552000	USD
CY2019	us-gaap	Noninterest Expense NoninterestExpense	160739000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	158738000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	100582000	USD
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CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	34335000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	22818000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	29873000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	124403000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	77764000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	98739000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	98739000	USD
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.18
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.44
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CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.20
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.45
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.92
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	57088000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	53930000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52029000	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	56586000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	53502000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	51449000	shares
CY2021	us-gaap	Net Income Loss NetIncomeLoss	124403000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	77764000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	98739000	USD
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-8200000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	5000000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	5900000	USD
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CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	16628000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	19016000	USD
CY2019	us-gaap	Other Comprehensive Income Reclassification Adjustment For Held To Maturity Transferred To Available For Sale Securities Tax OtherComprehensiveIncomeReclassificationAdjustmentForHeldToMaturityTransferredToAvailableForSaleSecuritiesTax	-154000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Transfers From Held To Maturity To Available For Sale Securities Net Of Tax OtherComprehensiveIncomeLossTransfersFromHeldToMaturityToAvailableForSaleSecuritiesNetOfTax	0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Transfers From Held To Maturity To Available For Sale Securities Net Of Tax OtherComprehensiveIncomeLossTransfersFromHeldToMaturityToAvailableForSaleSecuritiesNetOfTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Transfers From Held To Maturity To Available For Sale Securities Net Of Tax OtherComprehensiveIncomeLossTransfersFromHeldToMaturityToAvailableForSaleSecuritiesNetOfTax	-730000	USD
CY2021	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossTax	21000	USD
CY2020	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossTax	40000	USD
CY2019	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossTax	87000	USD
CY2021	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss After Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossAfterTax	-86000	USD
CY2020	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss After Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossAfterTax	-184000	USD
CY2019	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss After Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossAfterTax	-175000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-85000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	314000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	95000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-278000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	782000	USD
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CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent	120000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent	42000	USD
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CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-125000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	0	USD
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CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	15905000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	17525000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	97039000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	93669000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	116264000	USD
CY2021Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	238750000	USD
CY2020Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	86630000	USD
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CY2020Q4	sbcf	Time Deposits With Other Banks TimeDepositsWithOtherBanks	750000	USD
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CY2020Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	68890000	USD
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	5925029000	USD
CY2020Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	5735349000	USD
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CY2021Q4	us-gaap	Time Deposits Less Than100000 TimeDepositsLessThan100000	404601000	USD
CY2020Q4	us-gaap	Time Deposits Less Than100000 TimeDepositsLessThan100000	425878000	USD
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CY2021	sbcf	Sale Of Loans Designated Held For Sale SaleOfLoansDesignatedHeldForSale	543410000	USD
CY2020	sbcf	Sale Of Loans Designated Held For Sale SaleOfLoansDesignatedHeldForSale	477178000	USD
CY2019	sbcf	Sale Of Loans Designated Held For Sale SaleOfLoansDesignatedHeldForSale	333591000	USD
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CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	3836000	USD
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CY2021	us-gaap	Proceeds From Sale Of Federal Reserve Stock ProceedsFromSaleOfFederalReserveStock	3945000	USD
CY2020	sbcf	Payments For Proceeds From New Loans And Principal Repayments Investing Activities PaymentsForProceedsFromNewLoansAndPrincipalRepaymentsInvestingActivities	79100000	USD
CY2019	sbcf	Payments For Proceeds From New Loans And Principal Repayments Investing Activities PaymentsForProceedsFromNewLoansAndPrincipalRepaymentsInvestingActivities	109614000	USD
CY2021	us-gaap	Payments To Acquire Loans Held For Investment PaymentsToAcquireLoansHeldForInvestment	259267000	USD
CY2020	us-gaap	Payments To Acquire Loans Held For Investment PaymentsToAcquireLoansHeldForInvestment	0	USD
CY2019	us-gaap	Payments To Acquire Loans Held For Investment PaymentsToAcquireLoansHeldForInvestment	270791000	USD
CY2021	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	5598000	USD
CY2020	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	8521000	USD
CY2019	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	6509000	USD
CY2021	sbcf	Additions For Costs Capitalized To Other Real Estate Owned AdditionsForCostsCapitalizedToOtherRealEstateOwned	2513000	USD
CY2020	sbcf	Additions For Costs Capitalized To Other Real Estate Owned AdditionsForCostsCapitalizedToOtherRealEstateOwned	2557000	USD
CY2020	us-gaap	Proceeds From Sale Of Federal Reserve Stock ProceedsFromSaleOfFederalReserveStock	39185000	USD
CY2019	us-gaap	Proceeds From Sale Of Federal Reserve Stock ProceedsFromSaleOfFederalReserveStock	74120000	USD
CY2021	us-gaap	Payments To Acquire Federal Reserve Stock PaymentsToAcquireFederalReserveStock	3020000	USD
CY2020	us-gaap	Payments To Acquire Federal Reserve Stock PaymentsToAcquireFederalReserveStock	28278000	USD
CY2019	us-gaap	Payments To Acquire Federal Reserve Stock PaymentsToAcquireFederalReserveStock	75193000	USD
CY2021	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	0	USD
CY2020	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	0	USD
CY2019	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	14218000	USD
CY2021	sbcf	Net Cash From Acquition Net Of Paid For Prefrred Stock NetCashFromAcquitionNetOfPaidForPrefrredStock	98100000	USD
CY2020	sbcf	Net Cash From Acquition Net Of Paid For Prefrred Stock NetCashFromAcquitionNetOfPaidForPrefrredStock	71965000	USD
CY2019	sbcf	Net Cash From Acquition Net Of Paid For Prefrred Stock NetCashFromAcquitionNetOfPaidForPrefrredStock	0	USD
CY2021	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	60000000	USD
CY2020	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	0	USD
CY2019	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	0	USD
CY2021	sbcf	Additions To Bank Premises And Equipment AdditionsToBankPremisesAndEquipment	4327000	USD
CY2020	sbcf	Additions To Bank Premises And Equipment AdditionsToBankPremisesAndEquipment	1587000	USD
CY2019	sbcf	Additions To Bank Premises And Equipment AdditionsToBankPremisesAndEquipment	2523000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-412511000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-342502000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-321341000	USD
CY2021	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	640108000	USD
CY2020	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	844405000	USD
CY2019	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	407513000	USD
CY2021	us-gaap	Increase Decrease In Federal Funds Purchased And Securities Sold Under Agreements To Repurchase Net IncreaseDecreaseInFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseNet	1956000	USD
CY2020	us-gaap	Increase Decrease In Federal Funds Purchased And Securities Sold Under Agreements To Repurchase Net IncreaseDecreaseInFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseNet	33488000	USD
CY2019	us-gaap	Increase Decrease In Federal Funds Purchased And Securities Sold Under Agreements To Repurchase Net IncreaseDecreaseInFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseNet	-128202000	USD
CY2021	us-gaap	Increase Decrease In Loans From Other Federal Home Loan Banks IncreaseDecreaseInLoansFromOtherFederalHomeLoanBanks	0	USD
CY2020	us-gaap	Increase Decrease In Loans From Other Federal Home Loan Banks IncreaseDecreaseInLoansFromOtherFederalHomeLoanBanks	-235000000	USD
CY2019	us-gaap	Increase Decrease In Loans From Other Federal Home Loan Banks IncreaseDecreaseInLoansFromOtherFederalHomeLoanBanks	-67000000	USD
CY2021	sbcf	Repayments Of Loans Federal Home Loan Banks Maturities Greater Than Three Months RepaymentsOfLoansFederalHomeLoanBanksMaturitiesGreaterThanThreeMonths	33000000	USD
CY2020	sbcf	Repayments Of Loans Federal Home Loan Banks Maturities Greater Than Three Months RepaymentsOfLoansFederalHomeLoanBanksMaturitiesGreaterThanThreeMonths	115000000	USD
CY2019	sbcf	Repayments Of Loans Federal Home Loan Banks Maturities Greater Than Three Months RepaymentsOfLoansFederalHomeLoanBanksMaturitiesGreaterThanThreeMonths	63000000	USD
CY2021	sbcf	Increase Decreasein Loansfrom Federal Home Loan Banks Maturities Greater Than Three Months IncreaseDecreaseinLoansfromFederalHomeLoanBanksMaturitiesGreaterThanThreeMonths	0	USD
CY2020	sbcf	Increase Decreasein Loansfrom Federal Home Loan Banks Maturities Greater Than Three Months IncreaseDecreaseinLoansfromFederalHomeLoanBanksMaturitiesGreaterThanThreeMonths	35000000	USD
CY2019	sbcf	Increase Decreasein Loansfrom Federal Home Loan Banks Maturities Greater Than Three Months IncreaseDecreaseinLoansfromFederalHomeLoanBanksMaturitiesGreaterThanThreeMonths	65000000	USD
CY2021	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	5022000	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1486000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	2135000	USD
CY2021	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	22506000	USD
CY2020	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	0	USD
CY2019	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	0	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	591580000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	561407000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	212176000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	333641000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	279557000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	8580000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	404088000	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
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	737729000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	404088000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	124531000	USD
CY2021	sbcf	Operating Lease Liability Initial Recognition OperatingLeaseLiabilityInitialRecognition	12459000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	9977000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	23548000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	46130000	USD
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	30887000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	27712000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	16000000	USD
CY2021	sbcf	Operating Lease Right Of Use Assets Initial Recognition OperatingLeaseRightOfUseAssetsInitialRecognition	12459000	USD
CY2020	sbcf	Operating Lease Right Of Use Assets Initial Recognition OperatingLeaseRightOfUseAssetsInitialRecognition	2095000	USD
CY2019	sbcf	Operating Lease Right Of Use Assets Initial Recognition OperatingLeaseRightOfUseAssetsInitialRecognition	30301000	USD
CY2020	sbcf	Operating Lease Liability Initial Recognition OperatingLeaseLiabilityInitialRecognition	2095000	USD
CY2019	sbcf	Operating Lease Liability Initial Recognition OperatingLeaseLiabilityInitialRecognition	34627000	USD
CY2021	sbcf	Transfer Of Debt Securities From Available For Sale To Held To Maturity TransferOfDebtSecuritiesFromAvailableForSaleToHeldToMaturity	210805000	USD
CY2020	sbcf	Transfer Of Debt Securities From Available For Sale To Held To Maturity TransferOfDebtSecuritiesFromAvailableForSaleToHeldToMaturity	0	USD
CY2019	sbcf	Transfer Of Debt Securities From Available For Sale To Held To Maturity TransferOfDebtSecuritiesFromAvailableForSaleToHeldToMaturity	0	USD
CY2021	sbcf	Transfer Of Debt Securities From Held To Maturity To Available For Sale TransferOfDebtSecuritiesFromHeldToMaturityToAvailableForSale	0	USD
CY2020	sbcf	Transfer Of Debt Securities From Held To Maturity To Available For Sale TransferOfDebtSecuritiesFromHeldToMaturityToAvailableForSale	0	USD
CY2019	sbcf	Transfer Of Debt Securities From Held To Maturity To Available For Sale TransferOfDebtSecuritiesFromHeldToMaturityToAvailableForSale	52796000	USD
CY2021	us-gaap	Noncash Or Part Noncash Acquisition Investments Acquired1 NoncashOrPartNoncashAcquisitionInvestmentsAcquired1	17147000	USD
CY2020	us-gaap	Noncash Or Part Noncash Acquisition Investments Acquired1 NoncashOrPartNoncashAcquisitionInvestmentsAcquired1	0	USD
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Investments Acquired1 NoncashOrPartNoncashAcquisitionInvestmentsAcquired1	0	USD
CY2021	sbcf	Transfer From Loans To Other Real Estate Owned TransferFromLoansToOtherRealEstateOwned	0	USD
CY2020	sbcf	Transfer From Loans To Other Real Estate Owned TransferFromLoansToOtherRealEstateOwned	5624000	USD
CY2019	sbcf	Transfer From Loans To Other Real Estate Owned TransferFromLoansToOtherRealEstateOwned	5665000	USD
CY2021	sbcf	Transfers From Bank Premises To Other Real Estate Owned TransfersFromBankPremisesToOtherRealEstateOwned	3318000	USD
CY2020	sbcf	Transfers From Bank Premises To Other Real Estate Owned TransfersFromBankPremisesToOtherRealEstateOwned	1289000	USD
CY2019	sbcf	Transfers From Bank Premises To Other Real Estate Owned TransfersFromBankPremisesToOtherRealEstateOwned	0	USD
CY2021	us-gaap	Financing Receivable Reclassification To Held For Sale FinancingReceivableReclassificationToHeldForSale	0	USD
CY2020	us-gaap	Financing Receivable Reclassification To Held For Sale FinancingReceivableReclassificationToHeldForSale	0	USD
CY2019	us-gaap	Financing Receivable Reclassification To Held For Sale FinancingReceivableReclassificationToHeldForSale	801000	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	sbcf	Stock Issued During Period Value Employee Benefit Plans StockIssuedDuringPeriodValueEmployeeBenefitPlans	2668000	USD
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	428000	USD
CY2019	us-gaap	Stockholders Equity Other StockholdersEquityOther	-104000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	985639000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	93669000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	7304000	USD
CY2020	sbcf	Stock Issued During Period Value Employee Benefit Plans StockIssuedDuringPeriodValueEmployeeBenefitPlans	2252000	USD
CY2020	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	766000	USD
CY2020	sbcf	Stock Issued During Period Value Acquisitions Net Of Related Expense StockIssuedDuringPeriodValueAcquisitionsNetOfRelatedExpense	62152000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	1130402000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	97039000	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8685000	USD
CY2021	sbcf	Stock Issued During Period Value Employee Benefit Plans StockIssuedDuringPeriodValueEmployeeBenefitPlans	2314000	USD
CY2021	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	7336000	USD
CY2021	sbcf	Stock Issued During Period Value Acquisitions Net Of Related Expense StockIssuedDuringPeriodValueAcquisitionsNetOfRelatedExpense	86487000	USD
CY2021	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	5607000	USD
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.39
CY2021	us-gaap	Dividends Common Stock DividendsCommonStock	22506000	USD
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	1310736000	USD
CY2021	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1	operating_segment
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Use of Estimates:</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> 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 credit losses, acquisition accounting and purchased loans, intangible assets and impairment testing, other fair value measurements, and contingent liabilities.</span>
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	491000	shares
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Policy For Uncollectible Amounts FinancingReceivableAllowanceForCreditLossesPolicyForUncollectibleAmounts	<div style="margin-bottom:10pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Allowance for credit losses on loans: </span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">On January 1, 2020, the Company adopted Accounting Standards Codification No. 326, </span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Financial Instruments - Credit Losses</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> (ASC 326), which replaced the incurred loss methodology with an expected loss methodology that is referred to as the current expected credit loss ("CECL") methodology. The Company adopted ASC Topic 326 using the modified retrospective method for all financial assets measured at amortized cost and off-balance sheet credit exposures. Results for the reporting period beginning January 1, 2020 are presented under ASC Topic 326, while prior amounts continue to be reported in accordance with previously applicable GAAP.</span></div><div style="margin-bottom:10pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">ASC Topic 326 introduced new definitions and criteria for categorizing purchased loans. Loans that, as of the date of acquisition, have experienced a more-than-insignificant deterioration in credit quality since origination are classified as purchased credit ("PCD"). Acquired loans which do not meet the definition of PCD are classified by the Company as acquired Non-PCD.</span></div><div style="margin-bottom:10pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company estimates the allowance for credit losses on loans using relevant available information, from both internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts. Historical credit losses provide the basis for the estimation of expected credit losses. Adjustments to historical loss information are made for differences in current loan-specific risk characteristics such as differences in underwriting standards, portfolio mix, delinquency level, loan to value ratios, borrower credit characteristics, loan seasoning or term as well as for changes in environmental conditions, such as changes in unemployment rates, property values, occupancy rates, and other macroeconomic metrics.</span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The allowance for credit losses is measured on a collective basis when similar risk characteristics exist. For loans analyzed on a collective basis, the Company has developed an allowance model based on an analysis of the probability of default (“PD”) and loss given default (“LGD”) to determine an expected loss by loan segment. PDs and LGDs are developed by analyzing the average historical loss migration of loans to default. The Company excludes accrued interest on loans from its determination of allowance.</span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The allowance estimation process also applies an economic forecast scenario over a three year forecast period. The forecast may utilize one scenario or a composite of scenarios based on management's judgment and expectations around the current and future macroeconomic outlook. Expected credit losses are estimated over the contractual term of the loans, adjusted for expected prepayments when appropriate. The contractual term of a loan excludes expected extensions, renewals, and modification unless either of the following applies: management has a reasonable expectation at the reporting date that a troubled debt restructuring will be executed with an individual borrower or the extension or renewal options are included in the original or modified contract at the reporting date and not unconditionally cancellable by the Company. For portfolio segments with a weighted average life longer than three years, the Company reverts to longer term historical loss experience, adjusted for prepayments, to estimate losses over the remaining life of the loans within each segment.</span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Adjustments may be made to baseline reserves for some of the loan pools based on an assessment of internal and external influences on credit quality not fully reflected in the quantitative components of the allowance model. These influences may include elements such as changes in concentration, macroeconomic conditions, recent observable asset quality trends, staff turnover, regional market conditions, employment levels and loan growth. Based upon management's assessments of these factors, the Company may apply qualitative adjustments to the allowance.</span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Loans that do not share risk characteristics are evaluated on an individual basis. Loans evaluated individually are not also included in the collective evaluation. When management determines that foreclosure is probable, expected credit losses are based on the fair value of the collateral at the reporting date, adjusted for selling costs as appropriate.</span></div>
CY2021	us-gaap	Net Income Loss NetIncomeLoss	124403000	USD
CY2021	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	508000	shares
CY2020	us-gaap	Net Income Loss NetIncomeLoss	77764000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	98739000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	98739000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	56586000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	53502000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	51449000	shares
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.20
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.45
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.92
CY2021	us-gaap	Net Income Loss NetIncomeLoss	124403000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	77764000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	98739000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	98739000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	56586000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	53502000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	51449000	shares
CY2021	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	502000	shares
CY2020	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	428000	shares
CY2019	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	580000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	57088000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	53930000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	52029000	shares
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.18
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.44
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.90
CY2021Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss	1653658000	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	11518000	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	20857000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	1644319000	USD
CY2021Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss	638640000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	3828000	USD
CY2020	sbcf	Proceeds From Sale Of Debt Securities Available For Sale Including Legacy Securities ProceedsFromSaleOfDebtSecuritiesAvailableForSaleIncludingLegacySecurities	96700000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	15070000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	627398000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss	1371539000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	28716000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	2098000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	1398157000	USD
CY2020Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss	184484000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	7818000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	123000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	192179000	USD
CY2021	sbcf	Proceeds From Sale Of Debt Securities Available For Sale Including Legacy Securities ProceedsFromSaleOfDebtSecuritiesAvailableForSaleIncludingLegacySecurities	102100000	USD
CY2021	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	300000	USD
CY2021	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	600000	USD
CY2020	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	2400000	USD
CY2020	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	1300000	USD
CY2019	sbcf	Proceeds From Sale Of Debt Securities Available For Sale Including Legacy Securities ProceedsFromSaleOfDebtSecuritiesAvailableForSaleIncludingLegacySecurities	202700000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	1144606000	USD
CY2019	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	2900000	USD
CY2019	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	1800000	USD
CY2021Q1	us-gaap	Debt Securities Held To Maturity Transfer Amount DebtSecuritiesHeldToMaturityTransferAmount	210800000	USD
CY2021Q1	us-gaap	Held To Maturity Securities Transferred Security Unrealized Gain Loss HeldToMaturitySecuritiesTransferredSecurityUnrealizedGainLoss	800000	USD
CY2021Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	638640000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	627398000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss	1653658000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	1644319000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	1113319000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	19831000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	31287000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	1026000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	20857000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	332099000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	1530000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	73338000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	568000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	405437000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	2098000	USD
CY2021Q4	us-gaap	Federal Home Loan Bank Stock And Federal Reserve Bank Stock FederalHomeLoanBankStockAndFederalReserveBankStock	34400000	USD
CY2021Q4	sbcf	Debt Securities Available For Sale Interest Receivable DebtSecuritiesAvailableForSaleInterestReceivable	3400000	USD
CY2021Q4	sbcf	Debt Securities Held To Maturity Interest Receivable DebtSecuritiesHeldToMaturityInterestReceivable	1000000	USD
CY2020Q4	sbcf	Debt Securities Available For Sale Interest Receivable DebtSecuritiesAvailableForSaleInterestReceivable	3200000	USD
CY2020Q4	sbcf	Debt Securities Held To Maturity Interest Receivable DebtSecuritiesHeldToMaturityInterestReceivable	400000	USD
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	5925029000	USD
CY2020Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	5735349000	USD
CY2020Q4	us-gaap	Deferred Costs Current And Noncurrent DeferredCostsCurrentAndNoncurrent	22600000	USD
CY2021	us-gaap	Assets Fair Value Adjustment AssetsFairValueAdjustment	23100000	USD
CY2021Q4	sbcf	Fair Value Adjustment Percent FairValueAdjustmentPercent	0.023
CY2020	us-gaap	Assets Fair Value Adjustment AssetsFairValueAdjustment	30200000	USD
CY2020Q4	sbcf	Fair Value Adjustment Percent FairValueAdjustmentPercent	0.029
CY2021Q4	us-gaap	Interest Receivable InterestReceivable	14700000	USD
CY2020Q4	us-gaap	Interest Receivable InterestReceivable	25800000	USD
CY2021Q4	us-gaap	Notes Receivable Related Parties NotesReceivableRelatedParties	600000	USD
CY2020Q4	us-gaap	Notes Receivable Related Parties NotesReceivableRelatedParties	1100000	USD
CY2021	us-gaap	Increase Decrease In Notes Receivable Related Parties IncreaseDecreaseInNotesReceivableRelatedParties	2	USD
CY2021Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	30598000	USD
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	5925029000	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	36110000	USD
CY2020Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	5735349000	USD
CY2021	sbcf	Financing Receivable Nonaccrual No Related Allowance Interest Income FinancingReceivableNonaccrualNoRelatedAllowanceInterestIncome	1200000	USD
CY2020	sbcf	Financing Receivable Nonaccrual No Related Allowance Interest Income FinancingReceivableNonaccrualNoRelatedAllowanceInterestIncome	900000	USD
CY2019	sbcf	Financing Receivable Nonaccrual No Related Allowance Interest Income FinancingReceivableNonaccrualNoRelatedAllowanceInterestIncome	1300000	USD
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear	423022000	USD
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear	1181217000	USD
CY2021Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	22566000	USD
CY2021Q4	sbcf	Financing Receivable Nonaccrual With Allowance For Credit Losses FinancingReceivableNonaccrualWithAllowanceForCreditLosses	8032000	USD
CY2021Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	30598000	USD
CY2021Q4	sbcf	Financing Receivable Nonaccrual Related Allowance FinancingReceivableNonaccrualRelatedAllowance	3804000	USD
CY2020Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	26624000	USD
CY2020Q4	sbcf	Financing Receivable Nonaccrual With Allowance For Credit Losses FinancingReceivableNonaccrualWithAllowanceForCreditLosses	9486000	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	36110000	USD
CY2020Q4	sbcf	Financing Receivable Nonaccrual Related Allowance FinancingReceivableNonaccrualRelatedAllowance	5832000	USD
CY2021Q4	sbcf	Financing Receivable Collateral Dependent Loans FinancingReceivableCollateralDependentLoans	35716000	USD
CY2020Q4	sbcf	Financing Receivable Collateral Dependent Loans FinancingReceivableCollateralDependentLoans	47902000	USD
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear	1563032000	USD
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear	745584000	USD
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear	751942000	USD
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear	581648000	USD
CY2021Q4	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	678584000	USD
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	5925029000	USD
CY2020Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear	1309434000	USD
CY2020Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear	912701000	USD
CY2020Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear	779840000	USD
CY2020Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear	589022000	USD
CY2020Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear	582417000	USD
CY2020Q4	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear	928105000	USD
CY2020Q4	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	633830000	USD
CY2020Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	5735349000	USD
CY2020Q4	sbcf	Financing Receivable Value Of Loans With Accommodations Not Classified As Troubled Debt Restructuring FinancingReceivableValueOfLoansWithAccommodationsNotClassifiedAsTroubledDebtRestructuring	74100000	USD
CY2020Q4	sbcf	Financing Receivable Value Of Loans With Accommodations Not Classified As Troubled Debt Restructuring Percentage Of Loan Deferral FinancingReceivableValueOfLoansWithAccommodationsNotClassifiedAsTroubledDebtRestructuringPercentageOfLoanDeferral	0.01
CY2021Q4	sbcf	Financing Receivable Value Of Loans With Accommodations Not Classified As Troubled Debt Restructuring FinancingReceivableValueOfLoansWithAccommodationsNotClassifiedAsTroubledDebtRestructuring	1200000	USD
CY2021Q4	sbcf	Financing Receivable Value Of Loans With Accommodations Not Classified As Troubled Debt Restructuring Percentage Of Loan Deferral FinancingReceivableValueOfLoansWithAccommodationsNotClassifiedAsTroubledDebtRestructuringPercentageOfLoanDeferral	0.0002
CY2021	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	12	contract
CY2021	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	802000	USD
CY2021	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	802000	USD
CY2020	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	10	contract
CY2020	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	699000	USD
CY2020	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	699000	USD
CY2019	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	9	contract
CY2019	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	4704000	USD
CY2019	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	4704000	USD
CY2021Q4	sbcf	Financing Receivable Troubled Debt Restructuring Allowance For Credit Loss FinancingReceivableTroubledDebtRestructuringAllowanceForCreditLoss	200000	USD
CY2020Q4	sbcf	Financing Receivable Troubled Debt Restructuring Allowance For Credit Loss FinancingReceivableTroubledDebtRestructuringAllowanceForCreditLoss	200000	USD
CY2021	sbcf	Financing Receivable Troubled Debt Restructuring Modifications Number Of Contracts FinancingReceivableTroubledDebtRestructuringModificationsNumberOfContracts	3	contract
CY2021	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	200000	USD
CY2020	sbcf	Financing Receivable Troubled Debt Restructuring Modifications Number Of Contracts FinancingReceivableTroubledDebtRestructuringModificationsNumberOfContracts	0	contract
CY2021	us-gaap	Financing Receivable Change In Present Value Interest Income FinancingReceivableChangeInPresentValueInterestIncome	16000	USD
CY2020	us-gaap	Financing Receivable Change In Present Value Interest Income FinancingReceivableChangeInPresentValueInterestIncome	100000	USD
CY2019	us-gaap	Financing Receivable Change In Present Value Interest Income FinancingReceivableChangeInPresentValueInterestIncome	100000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	92733000	USD
CY2021	us-gaap	Financing Receivable Allowance For Credit Loss Purchased With Credit Deterioration Increase FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease	3046000	USD
CY2021	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-9421000	USD
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	6098000	USD
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	3071000	USD
CY2021	sbcf	Financing Receivable Allowance For Credit Loss Troubled Debt Restructuring Adjustments FinancingReceivableAllowanceForCreditLossTroubledDebtRestructuringAdjustments	16000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	83315000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	35154000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Loss Purchased With Credit Deterioration Increase FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease	6279000	USD
CY2020	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	37779000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	9842000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	2251000	USD
CY2020	sbcf	Financing Receivable Allowance For Credit Loss Troubled Debt Restructuring Adjustments FinancingReceivableAllowanceForCreditLossTroubledDebtRestructuringAdjustments	114000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	92733000	USD
CY2020	sbcf	Accrued Interest Receivable Credit Loss Expense Reversal AccruedInterestReceivableCreditLossExpenseReversal	400000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	32423000	USD
CY2019	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	10999000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	10559000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	2420000	USD
CY2019	sbcf	Financing Receivable Allowance For Credit Loss Troubled Debt Restructuring Adjustments FinancingReceivableAllowanceForCreditLossTroubledDebtRestructuringAdjustments	129000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	35154000	USD
CY2021Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	39863000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	4754000	USD
CY2021Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	5885166000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	78561000	USD
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	5925029000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	83315000	USD
CY2020Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	49196000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	7708000	USD
CY2020Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	5686153000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	85025000	USD
CY2020Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	5735349000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	92733000	USD
CY2020	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	15890000	USD
CY2021	us-gaap	Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths	400000	USD
CY2021Q4	us-gaap	Land Land	23359000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	129854000	USD
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	57450000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	72404000	USD
CY2019	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	533000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	252154000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	221176000	USD
CY2020Q4	us-gaap	Land Land	22586000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	134227000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	59110000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	75117000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	221176000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	205286000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	204753000	USD
CY2021	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	30978000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	205286000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	14577000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	18305000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	24807000	USD
CY2021	sbcf	Finite Lived Intangible Assets Acquired Including Purchase Accounting Adjustments FiniteLivedIntangibleAssetsAcquiredIncludingPurchaseAccountingAdjustments	3454000	USD
CY2020	sbcf	Finite Lived Intangible Assets Acquired Including Purchase Accounting Adjustments FiniteLivedIntangibleAssetsAcquiredIncludingPurchaseAccountingAdjustments	2129000	USD
CY2019	sbcf	Finite Lived Intangible Assets Acquired Including Purchase Accounting Adjustments FiniteLivedIntangibleAssetsAcquiredIncludingPurchaseAccountingAdjustments	-676000	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5033000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5857000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5826000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	12998000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	14577000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	18305000	USD
CY2021	us-gaap	Finite Lived Intangible Assets Remaining Amortization Period1 FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1	P39M
CY2020	us-gaap	Finite Lived Intangible Assets Remaining Amortization Period1 FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1	P44M
CY2019	us-gaap	Finite Lived Intangible Assets Remaining Amortization Period1 FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1	P47M
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	4800000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	4100000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	1500000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	1100000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	900000	USD
CY2021Q4	sbcf	Mortgage Servicing Rights MortgageServicingRights	1800000	USD
CY2020Q4	sbcf	Mortgage Servicing Rights MortgageServicingRights	2200000	USD
CY2021	us-gaap	Shortterm Debt Maximum Amount Outstanding During Period ShorttermDebtMaximumAmountOutstandingDuringPeriod	124101000	USD
CY2020	us-gaap	Shortterm Debt Maximum Amount Outstanding During Period ShorttermDebtMaximumAmountOutstandingDuringPeriod	119609000	USD
CY2019	us-gaap	Shortterm Debt Maximum Amount Outstanding During Period ShorttermDebtMaximumAmountOutstandingDuringPeriod	193388000	USD
CY2021Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0012
CY2020Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0016
CY2019Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0117
CY2021	us-gaap	Shortterm Debt Average Outstanding Amount ShorttermDebtAverageOutstandingAmount	113881000	USD
CY2020	us-gaap	Shortterm Debt Average Outstanding Amount ShorttermDebtAverageOutstandingAmount	84514000	USD
CY2019	us-gaap	Shortterm Debt Average Outstanding Amount ShorttermDebtAverageOutstandingAmount	106142000	USD
CY2021	sbcf	Short Term Debt Weighted Average Interest Rate During Year ShortTermDebtWeightedAverageInterestRateDuringYear	0.0012
CY2020	sbcf	Short Term Debt Weighted Average Interest Rate During Year ShortTermDebtWeightedAverageInterestRateDuringYear	0.0033
CY2019	sbcf	Short Term Debt Weighted Average Interest Rate During Year ShortTermDebtWeightedAverageInterestRateDuringYear	0.0135
CY2021Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	1600000000	USD
CY2021Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	75261000	USD
CY2021Q4	sbcf	Trust Preferred Securities TrustPreferredSecurities	73000000	USD
CY2021Q4	sbcf	Common Equity Securities Issued By Trust CommonEquitySecuritiesIssuedByTrust	2261000	USD
CY2021Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	5600000	USD
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	3100000	USD
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2800000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2400000	USD
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	8685000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	7304000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	7244000	USD
CY2021	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	2067000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1737000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1723000	USD
CY2021Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Outstanding Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions	810180	shares
CY2021Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	10927000	USD
CY2021	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y9M25D
CY2021	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Remaining Contractual Term2 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2	P4Y6M
CY2021Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	810180	shares
CY2021Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1	22.02
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Discount From Market Price Purchase Date ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPricePurchaseDate	0.95
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	5872000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	5738000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	5570000	USD
CY2021	us-gaap	Variable Lease Cost VariableLeaseCost	996000	USD
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	1325000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	1211000	USD
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	564000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	497000	USD
CY2019	us-gaap	Short Term Lease Cost ShortTermLeaseCost	715000	USD
CY2021	us-gaap	Sublease Income SubleaseIncome	601000	USD
CY2020	us-gaap	Sublease Income SubleaseIncome	684000	USD
CY2019	us-gaap	Sublease Income SubleaseIncome	618000	USD
CY2021	us-gaap	Lease Cost LeaseCost	6831000	USD
CY2020	us-gaap	Lease Cost LeaseCost	6876000	USD
CY2019	us-gaap	Lease Cost LeaseCost	6878000	USD
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	35256000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	25538000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	38330000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	28959000	USD
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	11117000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	6035000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	44730000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	6400000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	38330000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	12459000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	2095000	USD
CY2021	sbcf	Right Of Use Asset Acquired In Acquisition RightOfUseAssetAcquiredInAcquisition	2606000	USD
CY2020	sbcf	Right Of Use Asset Acquired In Acquisition RightOfUseAssetAcquiredInAcquisition	2343000	USD
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P8Y3M18D
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P8Y6M
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0425
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0462
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	6597000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	6166000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	6032000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	5561000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	4869000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	15505000	USD
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	23661000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	21688000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	20954000	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3882000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	4471000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1932000	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	6800000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-2697000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	2808000	USD
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-8000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-644000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	4179000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	34335000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	22818000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	29873000	USD
CY2021	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	33335000	USD
CY2020	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	21122000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	27008000	USD
CY2021	sbcf	Effective Income Tax Rate Reconciliation Tax Law Changes From Coronavirus Aid And Economic Securities Act Amount EffectiveIncomeTaxRateReconciliationTaxLawChangesFromCoronavirusAidAndEconomicSecuritiesActAmount	0	USD
CY2020	sbcf	Effective Income Tax Rate Reconciliation Tax Law Changes From Coronavirus Aid And Economic Securities Act Amount EffectiveIncomeTaxRateReconciliationTaxLawChangesFromCoronavirusAidAndEconomicSecuritiesActAmount	-375000	USD
CY2019	sbcf	Effective Income Tax Rate Reconciliation Tax Law Changes From Coronavirus Aid And Economic Securities Act Amount EffectiveIncomeTaxRateReconciliationTaxLawChangesFromCoronavirusAidAndEconomicSecuritiesActAmount	0	USD
CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	419000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	199000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	125000	USD
CY2021	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	1276000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	1110000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	1282000	USD
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-813000	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-804000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-1283000	USD
CY2021	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	213000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	72000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	72000	USD
CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-1239000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-111000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-698000	USD
CY2021	sbcf	Effective Income Tax Rate Reconciliation Nondeductible Expense Executive Compensation Dissallowance Amount EffectiveIncomeTaxRateReconciliationNondeductibleExpenseExecutiveCompensationDissallowanceAmount	253000	USD
CY2020	sbcf	Effective Income Tax Rate Reconciliation Nondeductible Expense Executive Compensation Dissallowance Amount EffectiveIncomeTaxRateReconciliationNondeductibleExpenseExecutiveCompensationDissallowanceAmount	0	USD
CY2019	sbcf	Effective Income Tax Rate Reconciliation Nondeductible Expense Executive Compensation Dissallowance Amount EffectiveIncomeTaxRateReconciliationNondeductibleExpenseExecutiveCompensationDissallowanceAmount	0	USD
CY2021	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-5000	USD
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	142000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-36000	USD
CY2021	sbcf	Current Federal Tax Benefit Provision Before Valuation Allowance CurrentFederalTaxBenefitProvisionBeforeValuationAllowance	30461000	USD
CY2020	sbcf	Current Federal Tax Benefit Provision Before Valuation Allowance CurrentFederalTaxBenefitProvisionBeforeValuationAllowance	18991000	USD
CY2019	sbcf	Current Federal Tax Benefit Provision Before Valuation Allowance CurrentFederalTaxBenefitProvisionBeforeValuationAllowance	23762000	USD
CY2021	sbcf	Current State And Local Tax Benefit Provision Before Valuation Allowance CurrentStateAndLocalTaxBenefitProvisionBeforeValuationAllowance	3874000	USD
CY2021Q4	sbcf	Deferred Tax Liabilities Deposit Base Intangible DeferredTaxLiabilitiesDepositBaseIntangible	3134000	USD
CY2020Q4	sbcf	Deferred Tax Liabilities Deposit Base Intangible DeferredTaxLiabilitiesDepositBaseIntangible	3234000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	34335000	USD
CY2020	sbcf	Current State And Local Tax Benefit Provision Before Valuation Allowance CurrentStateAndLocalTaxBenefitProvisionBeforeValuationAllowance	3827000	USD
CY2019	sbcf	Current State And Local Tax Benefit Provision Before Valuation Allowance CurrentStateAndLocalTaxBenefitProvisionBeforeValuationAllowance	6111000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	22818000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	29873000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	22686000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	24158000	USD
CY2021Q4	sbcf	Deferred Tax Assets Other Real Estate Owned DeferredTaxAssetsOtherRealEstateOwned	52000	USD
CY2020Q4	sbcf	Deferred Tax Assets Other Real Estate Owned DeferredTaxAssetsOtherRealEstateOwned	422000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	2323000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	1973000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	2138000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	2857000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	1226000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	1333000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	2287000	USD
CY2021Q4	sbcf	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	9399000	USD
CY2020Q4	sbcf	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	7101000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	0	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	3276000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	2565000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	995000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Other Loss Carryforwards DeferredTaxAssetsOtherLossCarryforwards	477000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other Loss Carryforwards DeferredTaxAssetsOtherLossCarryforwards	38000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	43864000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	41442000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2021Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	43864000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	41442000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Tax Deferred Income DeferredTaxLiabilitiesTaxDeferredIncome	1660000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Tax Deferred Income DeferredTaxLiabilitiesTaxDeferredIncome	0	USD
CY2021Q4	sbcf	Deferred Tax Liabilities Unrealized Gains On Debt Securities Available For Sale DeferredTaxLiabilitiesUnrealizedGainsOnDebtSecuritiesAvailableForSale	0	USD
CY2020Q4	sbcf	Deferred Tax Liabilities Unrealized Gains On Debt Securities Available For Sale DeferredTaxLiabilitiesUnrealizedGainsOnDebtSecuritiesAvailableForSale	5890000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	776000	USD
CY2020Q4	sbcf	Deferred Tax Liabilities Unrealized Gains On Debt Securities Available For Sale DeferredTaxLiabilitiesUnrealizedGainsOnDebtSecuritiesAvailableForSale	5900000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	534000	USD
CY2021Q4	sbcf	Deferred Tax Liabilities Operating Lease Right Of Use Asset DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset	8645000	USD
CY2020Q4	sbcf	Deferred Tax Liabilities Operating Lease Right Of Use Asset DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset	6262000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	2328000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	1893000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	16543000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	17813000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	27321000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	23629000	USD
CY2021	sbcf	Unrealized Losses Resulting In Deferred Tax Asset UnrealizedLossesResultingInDeferredTaxAsset	9300000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	2300000	USD
CY2020	sbcf	Unrealized Gains Resulting In Deferred Tax Liability UnrealizedGainsResultingInDeferredTaxLiability	26300000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	27300000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	23600000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	27300000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	27300000	USD
CY2021Q4	us-gaap	Income Tax Examination Penalties And Interest Accrued IncomeTaxExaminationPenaltiesAndInterestAccrued	0	USD
CY2021	sbcf	Discrete Income Tax Expense Benefit Share Based Compensation DiscreteIncomeTaxExpenseBenefitShareBasedCompensation	-900000	USD
CY2020	sbcf	Discrete Income Tax Expense Benefit Share Based Compensation DiscreteIncomeTaxExpenseBenefitShareBasedCompensation	-100000	USD
CY2019	sbcf	Discrete Income Tax Expense Benefit Share Based Compensation DiscreteIncomeTaxExpenseBenefitShareBasedCompensation	-800000	USD
CY2021	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	1600000	USD
CY2020	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	900000	USD
CY2019	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	900000	USD
CY2021	sbcf	Affordable Housing Project Tax Credits AffordableHousingProjectTaxCredits	1200000	USD
CY2021	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	1600000	USD
CY2021Q4	sbcf	Affordable Housing Project Tax Benefits AffordableHousingProjectTaxBenefits	700000	USD
CY2020	sbcf	Affordable Housing Project Tax Credits AffordableHousingProjectTaxCredits	800000	USD
CY2020	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	900000	USD
CY2020Q4	sbcf	Affordable Housing Project Tax Benefits AffordableHousingProjectTaxBenefits	200000	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
CY2021	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	30100000	USD
CY2019Q4	sbcf	Affordable Housing Project Tax Benefits AffordableHousingProjectTaxBenefits	200000	USD
CY2020	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	16400000	USD
CY2021Q4	sbcf	Affordable Housing Program Obligation Unfunded AffordableHousingProgramObligationUnfunded	23200000	USD
CY2020Q4	sbcf	Affordable Housing Program Obligation Unfunded AffordableHousingProgramObligationUnfunded	9900000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2020Q4	sbcf	Income Tax Credit And Deferred Tax Asset IncomeTaxCreditAndDeferredTaxAsset	5500000	USD
CY2020	sbcf	Effective Income Tax Rate Reconciliation Tax Law Changes From Coronavirus Aid And Economic Securities Act Amount EffectiveIncomeTaxRateReconciliationTaxLawChangesFromCoronavirusAidAndEconomicSecuritiesActAmount	-400000	USD
CY2021Q4	sbcf	Capital Conservation Buffer Rate CapitalConservationBufferRate	0.025
CY2021Q4	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	100000000	shares
CY2021Q4	sbcf	Commitment To Extend Credit Amount CommitmentToExtendCreditAmount	1980338000	USD
CY2020Q4	sbcf	Commitment To Extend Credit Amount CommitmentToExtendCreditAmount	1548482000	USD
CY2021Q4	sbcf	Unfunded Limited Partner Equity Commitment UnfundedLimitedPartnerEquityCommitment	36393000	USD
CY2020Q4	sbcf	Unfunded Limited Partner Equity Commitment UnfundedLimitedPartnerEquityCommitment	21390000	USD
CY2021Q4	sbcf	Unfunded Limited Partner Equity Commitment UnfundedLimitedPartnerEquityCommitment	36400000	USD
CY2020	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	9100000	USD
CY2021Q4	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	31791000	USD
CY2020Q4	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	68890000	USD
CY2021Q4	sbcf	Loans Held For Sale Accrued Interest LoansHeldForSaleAccruedInterest	30963000	USD
CY2020Q4	sbcf	Loans Held For Sale Accrued Interest LoansHeldForSaleAccruedInterest	66415000	USD
CY2021	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	828000	USD
CY2020	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	2475000	USD
CY2021Q4	sbcf	Capitalization Rates Utilized To Determine Fair Value Of Underlying Collateral Averaged Percentage CapitalizationRatesUtilizedToDetermineFairValueOfUnderlyingCollateralAveragedPercentage	0.071
CY2021	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	7900000	USD
CY2019	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	1000000	USD
CY2021	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	288971000	USD
CY2020	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	281244000	USD
CY2021	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	140851000	USD
CY2020	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	71124000	USD
CY2021	us-gaap	Business Acquisition Pro Forma Earnings Per Share Basic BusinessAcquisitionProFormaEarningsPerShareBasic	2.41
CY2020	us-gaap	Business Acquisition Pro Forma Earnings Per Share Basic BusinessAcquisitionProFormaEarningsPerShareBasic	1.27
CY2021	us-gaap	Business Acquisition Pro Forma Earnings Per Share Diluted BusinessAcquisitionProFormaEarningsPerShareDiluted	2.39
CY2020	us-gaap	Business Acquisition Pro Forma Earnings Per Share Diluted BusinessAcquisitionProFormaEarningsPerShareDiluted	1.26
CY2021	dei	Auditor Firm AuditorFirmId	173

Files In Submission

Name	View Source	Status
0000730708-22-000019-index-headers.html	Edgar Link	pending
0000730708-22-000019-index.html	Edgar Link	pending
0000730708-22-000019.txt	Edgar Link	pending
0000730708-22-000019-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
image_1a.jpg	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
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report.css	Edgar Link	pending
sbcf-20211231.htm	Edgar Link	pending
sbcf-20211231.xsd	Edgar Link	pending
sbcf-20211231_cal.xml	Edgar Link	unprocessable
sbcf-20211231_def.xml	Edgar Link	unprocessable
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sbcf-20211231_htm.xml	Edgar Link	completed
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sbcf2021123110kex-101.htm	Edgar Link	pending
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sbcf2021123110kex-322.htm	Edgar Link	pending
Show.js	Edgar Link	pending

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$SBCF
Seacoast Banking Corporation of Florida Stock $sbcf

2021 Q4 Form 10-K Financial Statement

#000073070822000019 Filed on February 28, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SBCF Seacoast Banking Corporation of Florida Stock $sbcf

2021 Q4 Form 10-K Financial Statement

#000073070822000019 Filed on February 28, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SBCF
Seacoast Banking Corporation of Florida Stock $sbcf