$SFDL
SECURITY FEDERAL CORP Stock $sfdl

$sfdl Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000093905722000085 Filed on March 29, 2022

Income Statement

Concept	2021 Q4	2021 Q3	2021 Q2
Revenue	$9.634M	$9.668M	$8.717M
YoY Change	0.73%	3.52%	-4.18%
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	$490.0K	$781.2K	$770.9K
YoY Change	0.0%	13.36%	3.25%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$924.0K	$845.0K	$978.4K
YoY Change	-21.36%	-40.95%	-44.28%
% of Operating Profit
Other Income/Expense, Net		$802.0K	$818.4K
YoY Change		56.12%	46.43%
Pretax Income	$2.544M	$5.969M	$3.715M
YoY Change	-33.61%	490.99%	51.22%
Income Tax	$516.0K	$1.327M	$791.3K
% Of Pretax Income	20.28%	22.23%	21.3%
Net Earnings	$2.028M	$1.549M	$2.924M
YoY Change	-33.83%	-51.27%	45.05%
Net Earnings / Revenue	21.05%	16.02%	33.54%
Basic Earnings Per Share	$0.62	$1.43	$0.90
Diluted Earnings Per Share	$624.6K	$1.428M	$898.5K
COMMON SHARES
Basic Shares Outstanding	3.253M shares	3.253M shares	3.253M shares
Diluted Shares Outstanding

Balance Sheet

Concept	2021 Q4	2021 Q3	2021 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$27.62M	$13.56M	$13.15M
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	$25.24M	$26.19M	$26.18M
YoY Change	-5.04%	-1.89%	-3.21%
Goodwill	$1.200M	$1.200M	$1.200M
YoY Change	0.0%	0.0%	0.0%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$1.301B	$1.230B	$1.200B
YoY Change	11.05%	8.95%	9.05%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$2.300M	$2.400M	$2.200M
YoY Change	-4.17%	-4.0%	-15.38%
Deferred Revenue
YoY Change
Short-Term Debt	$26.80M	$42.00M	$34.90M
YoY Change	-56.63%	17.32%	13.68%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$2.300M	$2.400M	$2.200M
YoY Change	-4.17%	-4.0%	-15.38%
LONG-TERM LIABILITIES
Long-Term Debt	$35.20M	$35.20M	$35.20M
YoY Change	0.0%	0.0%	0.0%
Other Long-Term Liabilities	$5.300M	$7.100M	$7.900M
YoY Change	-25.35%	10.94%	14.49%
Total Long-Term Liabilities	$40.50M	$42.30M	$43.10M
YoY Change	-4.26%	1.68%	2.38%
TOTAL LIABILITIES
Total Short-Term Liabilities	$2.300M	$2.400M	$2.200M
Total Long-Term Liabilities	$40.50M	$42.30M	$43.10M
Total Liabilities	$1.186B	$1.114B	$1.085B
YoY Change	11.88%	9.16%	9.2%
SHAREHOLDERS EQUITY
Retained Earnings	$96.37M	$94.70M	$90.42M
YoY Change	13.34%	15.08%	10.66%
Common Stock
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)	$4.331M	$4.331M	$4.331M
YoY Change	0.0%	0.0%	0.0%
Treasury Stock Shares	200.9K shares	200.9K shares	200.9K shares
Shareholders Equity	$115.5M	$96.46M	$115.3M
YoY Change
Total Liabilities & Shareholders Equity	$1.301B	$1.230B	$1.200B
YoY Change	11.05%	8.95%	9.05%

Cashflow Statement

Concept	2021 Q4	2021 Q3	2021 Q2
OPERATING ACTIVITIES
Net Income	$2.028M	$1.549M	$2.924M
YoY Change	-33.83%	-51.27%	45.05%
Depreciation, Depletion And Amortization	$490.0K	$781.2K	$770.9K
YoY Change	0.0%	13.36%	3.25%
Cash From Operating Activities	-$6.890M	$8.650M	$8.460M
YoY Change	-441.09%	225.19%	139.66%
INVESTING ACTIVITIES
Capital Expenditures	-$1.060M	-$500.0K	-$270.0K
YoY Change	194.44%	354.55%	-43.75%
Acquisitions
YoY Change
Other Investing Activities	-$51.83M	-$36.70M	-$27.72M
YoY Change	35.54%	25.68%	-55.66%
Cash From Investing Activities	-$52.88M	-$37.20M	-$27.99M
YoY Change	36.96%	26.88%	-55.56%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	73.84M	28.96M	13.57M
YoY Change	89.28%	7.58%	-77.13%
NET CHANGE
Cash From Operating Activities	-6.890M	8.650M	8.460M
Cash From Investing Activities	-52.88M	-37.20M	-27.99M
Cash From Financing Activities	73.84M	28.96M	13.57M
Net Change In Cash	14.07M	410.0K	-5.960M
YoY Change	481.4%	57.69%	4866.67%
FREE CASH FLOW
Cash From Operating Activities	-$6.890M	$8.650M	$8.460M
Capital Expenditures	-$1.060M	-$500.0K	-$270.0K
Free Cash Flow	-$5.830M	$9.150M	$8.730M
YoY Change	-344.96%	230.32%	117.71%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0000818677
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Entity Filer Category EntityFilerCategory	Non-accelerated Filer
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2021Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	22000	shares
CY2020Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	22000	shares
CY2021Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	22000	shares
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021	dei	Entity Small Business EntitySmallBusiness	true
CY2021	dei	Entity Shell Company EntityShellCompany	false
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2020Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2021Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	200000	shares
CY2020Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	200000	shares
CY2020Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	22000	shares
CY2021Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2021Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	0	USD
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	000-16120
CY2021	dei	Entity Registrant Name EntityRegistrantName	SECURITY FEDERAL CORPORATION
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	SC
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	57-0858504
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	238 Richland Avenue Northwest
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Aiken
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	SC
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	29801
CY2021	dei	City Area Code CityAreaCode	803
CY2021	dei	Local Phone Number LocalPhoneNumber	641-3000
CY2021	dei	Security12g Title Security12gTitle	Common Stock
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Entity Filer Category EntityFilerCategory	Non-accelerated Filer
CY2021	dei	Entity Small Business EntitySmallBusiness	true
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2021	dei	Entity Shell Company EntityShellCompany	false
CY2022Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	3252884	shares
CY2021	dei	Trading Symbol TradingSymbol	SFDL
CY2021Q2	dei	Entity Public Float EntityPublicFloat	59523483	USD
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Auditor Firm AuditorFirmId	149
CY2021	dei	Auditor Name AuditorName	Elliott Davis, LLC
CY2021	dei	Auditor Location AuditorLocation	Columbia, South Carolina
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CY2019	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	375000	USD
CY2021	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	35697080	USD
CY2020	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	26914633	USD
CY2019	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	28247611	USD
CY2021	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	0	USD
CY2020	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	1332666	USD
CY2019	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	819053	USD
CY2021	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	3836411	USD
CY2020	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	3508397	USD
CY2019	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	1728741	USD
CY2021	sfdl	Service Feeson Deposit Accounts ServiceFeesonDepositAccounts	956978	USD
CY2020	sfdl	Service Feeson Deposit Accounts ServiceFeesonDepositAccounts	941440	USD
CY2019	sfdl	Service Feeson Deposit Accounts ServiceFeesonDepositAccounts	1069470	USD
CY2021	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	610097	USD
CY2020	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	643414	USD
CY2019	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	674991	USD
CY2021	sfdl	Trust Income TrustIncome	1438727	USD
CY2020	sfdl	Trust Income TrustIncome	1138007	USD
CY2019	sfdl	Trust Income TrustIncome	1061200	USD
CY2021	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	635000	USD
CY2020	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	573250	USD
CY2019	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	678609	USD
CY2021	sfdl	Checkcardrevenue Checkcardrevenue	2470171	USD
CY2020	sfdl	Checkcardrevenue Checkcardrevenue	1683059	USD
CY2019	sfdl	Checkcardrevenue Checkcardrevenue	1449416	USD
CY2021	sfdl	Grant Revenue GrantRevenue	1826265	USD
CY2020	sfdl	Grant Revenue GrantRevenue	519712	USD
CY2019	sfdl	Grant Revenue GrantRevenue	478049	USD
CY2021	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	859602	USD
CY2020	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	1081188	USD
CY2019	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	1137614	USD
CY2021	us-gaap	Noninterest Income NoninterestIncome	12633251	USD
CY2020	us-gaap	Noninterest Income NoninterestIncome	11421133	USD
CY2019	us-gaap	Noninterest Income NoninterestIncome	9097143	USD
CY2021	us-gaap	Labor And Related Expense LaborAndRelatedExpense	19159831	USD
CY2020	us-gaap	Labor And Related Expense LaborAndRelatedExpense	17991666	USD
CY2019	us-gaap	Labor And Related Expense LaborAndRelatedExpense	16838702	USD
CY2021	us-gaap	Occupancy Net OccupancyNet	2622113	USD
CY2020	us-gaap	Occupancy Net OccupancyNet	2574549	USD
CY2019	us-gaap	Occupancy Net OccupancyNet	2354347	USD
CY2021	us-gaap	Advertising Expense AdvertisingExpense	1120097	USD
CY2020	us-gaap	Advertising Expense AdvertisingExpense	1053658	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	796213	USD
CY2021	us-gaap	Depreciation Depreciation	3137300	USD
CY2020	us-gaap	Depreciation Depreciation	2876832	USD
CY2019	us-gaap	Depreciation Depreciation	2601104	USD
CY2021	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	291039	USD
CY2020	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	134859	USD
CY2019	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	84022	USD
CY2021	us-gaap	Other Revenue Expense From Real Estate Operations OtherRevenueExpenseFromRealEstateOperations	115867	USD
CY2020	us-gaap	Other Revenue Expense From Real Estate Operations OtherRevenueExpenseFromRealEstateOperations	-2033	USD
CY2019	us-gaap	Other Revenue Expense From Real Estate Operations OtherRevenueExpenseFromRealEstateOperations	65772	USD
CY2021	us-gaap	Professional Fees ProfessionalFees	1201605	USD
CY2020	us-gaap	Professional Fees ProfessionalFees	768210	USD
CY2019	us-gaap	Professional Fees ProfessionalFees	377911	USD
CY2021	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	1197926	USD
CY2020	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	1061917	USD
CY2019	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	912507	USD
CY2021	us-gaap	Other Expenses OtherExpenses	3433005	USD
CY2020	us-gaap	Other Expenses OtherExpenses	3244481	USD
CY2019	us-gaap	Other Expenses OtherExpenses	3971683	USD
CY2021	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	32047049	USD
CY2020	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	29708205	USD
CY2019	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	27870717	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	16283282	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	8627561	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	9474037	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3509391	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1576957	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1679550	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	12773891	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	7050604	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	7794487	USD
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.93
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.19
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.64
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.93
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.19
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.50
CY2021	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.44
CY2020	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.40
CY2019	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.40
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	3252884	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	3212996	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	2955737	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	3252884	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	3212996	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	3257937	shares
CY2021	us-gaap	Net Income Loss NetIncomeLoss	12773891	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	7050604	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	7794487	USD
CY2021	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-2525307	USD
CY2020	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	3075693	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	1675405	USD
CY2021	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetOfTax	-7725746	USD
CY2020	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetOfTax	9494218	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetOfTax	5133884	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	333167	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	204763	USD
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	999499	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	614290	USD
CY2021	us-gaap	Other Comprehensive Income Reclassification Adjustment For Held To Maturity Transferred To Available For Sale Securities Tax OtherComprehensiveIncomeReclassificationAdjustmentForHeldToMaturityTransferredToAvailableForSaleSecuritiesTax	-32	USD
CY2020	us-gaap	Other Comprehensive Income Reclassification Adjustment For Held To Maturity Transferred To Available For Sale Securities Tax OtherComprehensiveIncomeReclassificationAdjustmentForHeldToMaturityTransferredToAvailableForSaleSecuritiesTax	-7099	USD
CY2019	us-gaap	Other Comprehensive Income Reclassification Adjustment For Held To Maturity Transferred To Available For Sale Securities Tax OtherComprehensiveIncomeReclassificationAdjustmentForHeldToMaturityTransferredToAvailableForSaleSecuritiesTax	-8053	USD
CY2021	sfdl	Amortizationof Unrealized Gainson Afs Securities Transferredto Htm AmortizationofUnrealizedGainsonAFSSecuritiesTransferredtoHTM	-97	USD
CY2020	sfdl	Amortizationof Unrealized Gainson Afs Securities Transferredto Htm AmortizationofUnrealizedGainsonAFSSecuritiesTransferredtoHTM	-21296	USD
CY2019	sfdl	Amortizationof Unrealized Gainson Afs Securities Transferredto Htm AmortizationofUnrealizedGainsonAFSSecuritiesTransferredtoHTM	-24158	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-7725843	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	8473423	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	4495436	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	5048048	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	15524027	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	12289923	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	80518433	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	7794487	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	4495436	USD
CY2019	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	52868	USD
CY2019	us-gaap	Stock Issued During Period Value Conversion Of Units StockIssuedDuringPeriodValueConversionOfUnits	20000	USD
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	1123219	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	91758005	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	7050604	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	8473423	USD
CY2020	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	12968	USD
CY2020	us-gaap	Stock Issued During Period Value Conversion Of Units StockIssuedDuringPeriodValueConversionOfUnits	5912000	USD
CY2020	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	1301254	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	111905746	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	12773891	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-7725843	USD
CY2021	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	1431269	USD
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	115522525	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	12773891	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	7050604	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	7794487	USD
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1957583	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1888280	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1589671	USD
CY2021	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-6801729	USD
CY2020	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-4462996	USD
CY2019	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-5290316	USD
CY2021	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-2404117	USD
CY2020	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	3600000	USD
CY2019	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	375000	USD
CY2021	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	635000	USD
CY2020	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	573250	USD
CY2019	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	540000	USD
CY2021	sfdl	Bol Ideathbenefits BOLIdeathbenefits	0	USD
CY2020	sfdl	Bol Ideathbenefits BOLIdeathbenefits	0	USD
CY2019	sfdl	Bol Ideathbenefits BOLIdeathbenefits	138609	USD
CY2021	us-gaap	Loans And Leases Receivable Gain Loss On Sales Net LoansAndLeasesReceivableGainLossOnSalesNet	3836411	USD
CY2020	us-gaap	Loans And Leases Receivable Gain Loss On Sales Net LoansAndLeasesReceivableGainLossOnSalesNet	3508397	USD
CY2019	us-gaap	Loans And Leases Receivable Gain Loss On Sales Net LoansAndLeasesReceivableGainLossOnSalesNet	1728741	USD
CY2021	us-gaap	Gain Loss On Sales Of Mortgage Backed Securities Mbs GainLossOnSalesOfMortgageBackedSecuritiesMBS	0	USD
CY2020	us-gaap	Gain Loss On Sales Of Mortgage Backed Securities Mbs GainLossOnSalesOfMortgageBackedSecuritiesMBS	625923	USD
CY2019	us-gaap	Gain Loss On Sales Of Mortgage Backed Securities Mbs GainLossOnSalesOfMortgageBackedSecuritiesMBS	-139390	USD
CY2021	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	0	USD
CY2020	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	706743	USD
CY2019	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	958443	USD
CY2021	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	105422	USD
CY2020	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	46354	USD
CY2019	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	184864	USD
CY2021	us-gaap	Real Estate Owned Valuation Allowance Amounts Applied RealEstateOwnedValuationAllowanceAmountsApplied	20000	USD
CY2020	us-gaap	Real Estate Owned Valuation Allowance Amounts Applied RealEstateOwnedValuationAllowanceAmountsApplied	15000	USD
CY2019	us-gaap	Real Estate Owned Valuation Allowance Amounts Applied RealEstateOwnedValuationAllowanceAmountsApplied	22000	USD
CY2021	us-gaap	Amortization Of Deferred Loan Origination Fees Net AmortizationOfDeferredLoanOriginationFeesNet	5121770	USD
CY2020	us-gaap	Amortization Of Deferred Loan Origination Fees Net AmortizationOfDeferredLoanOriginationFeesNet	1799236	USD
CY2019	us-gaap	Amortization Of Deferred Loan Origination Fees Net AmortizationOfDeferredLoanOriginationFeesNet	202684	USD
CY2021	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	118371483	USD
CY2020	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	112914762	USD
CY2019	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	61466054	USD
CY2021	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	112880086	USD
CY2020	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	111109159	USD
CY2019	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	61945934	USD
CY2021	us-gaap	Increase Decrease In Interest And Dividends Receivable IncreaseDecreaseInInterestAndDividendsReceivable	81132	USD
CY2020	us-gaap	Increase Decrease In Interest And Dividends Receivable IncreaseDecreaseInInterestAndDividendsReceivable	40197	USD
CY2019	us-gaap	Increase Decrease In Interest And Dividends Receivable IncreaseDecreaseInInterestAndDividendsReceivable	-45857	USD
CY2021	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	90170	USD
CY2020	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	80235	USD
CY2019	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	-40635	USD
CY2021	us-gaap	Increase Decrease In Accrued Investment Income Receivable IncreaseDecreaseInAccruedInvestmentIncomeReceivable	83639	USD
CY2020	us-gaap	Increase Decrease In Accrued Investment Income Receivable IncreaseDecreaseInAccruedInvestmentIncomeReceivable	-21420	USD
CY2019	us-gaap	Increase Decrease In Accrued Investment Income Receivable IncreaseDecreaseInAccruedInvestmentIncomeReceivable	-242347	USD
CY2021	us-gaap	Increase Decrease In Customer Advances IncreaseDecreaseInCustomerAdvances	-37600	USD
CY2020	us-gaap	Increase Decrease In Customer Advances IncreaseDecreaseInCustomerAdvances	-1472	USD
CY2019	us-gaap	Increase Decrease In Customer Advances IncreaseDecreaseInCustomerAdvances	-50923	USD
CY2021	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	381623	USD
CY2020	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	367015	USD
CY2019	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	371836	USD
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	872656	USD
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	2470309	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-233478	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	14158306	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	9358802	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	11860873	USD
CY2021	us-gaap	Payments To Acquire Mortgage Backed Securities Mbs Categorized As Available For Sale PaymentsToAcquireMortgageBackedSecuritiesMBSCategorizedAsAvailableForSale	144986541	USD
CY2020	us-gaap	Payments To Acquire Mortgage Backed Securities Mbs Categorized As Available For Sale PaymentsToAcquireMortgageBackedSecuritiesMBSCategorizedAsAvailableForSale	117864801	USD
CY2019	us-gaap	Payments To Acquire Mortgage Backed Securities Mbs Categorized As Available For Sale PaymentsToAcquireMortgageBackedSecuritiesMBSCategorizedAsAvailableForSale	106828636	USD
CY2021	us-gaap	Proceeds From Maturities Prepayments And Calls Of Mortgage Backed Securities Mbs ProceedsFromMaturitiesPrepaymentsAndCallsOfMortgageBackedSecuritiesMBS	56572630	USD
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Mortgage Backed Securities Mbs ProceedsFromMaturitiesPrepaymentsAndCallsOfMortgageBackedSecuritiesMBS	32888318	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Mortgage Backed Securities Mbs ProceedsFromMaturitiesPrepaymentsAndCallsOfMortgageBackedSecuritiesMBS	32283649	USD
CY2021	us-gaap	Proceeds From Sale Of Mortgage Backed Securities Mbs Categorized As Available For Sale ProceedsFromSaleOfMortgageBackedSecuritiesMBSCategorizedAsAvailableForSale	0	USD
CY2020	us-gaap	Proceeds From Sale Of Mortgage Backed Securities Mbs Categorized As Available For Sale ProceedsFromSaleOfMortgageBackedSecuritiesMBSCategorizedAsAvailableForSale	13884602	USD
CY2019	us-gaap	Proceeds From Sale Of Mortgage Backed Securities Mbs Categorized As Available For Sale ProceedsFromSaleOfMortgageBackedSecuritiesMBSCategorizedAsAvailableForSale	61306939	USD
CY2021	us-gaap	Payments To Acquire Mortgage Backed Securities Mbs Categorized As Held To Maturity PaymentsToAcquireMortgageBackedSecuritiesMBSCategorizedAsHeldToMaturity	10455826	USD
CY2020	us-gaap	Payments To Acquire Mortgage Backed Securities Mbs Categorized As Held To Maturity PaymentsToAcquireMortgageBackedSecuritiesMBSCategorizedAsHeldToMaturity	3726280	USD
CY2019	us-gaap	Payments To Acquire Mortgage Backed Securities Mbs Categorized As Held To Maturity PaymentsToAcquireMortgageBackedSecuritiesMBSCategorizedAsHeldToMaturity	0	USD
CY2021	us-gaap	Proceeds From Maturities Prepayments And Calls Of Longterm Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfLongtermInvestments	5055590	USD
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Longterm Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfLongtermInvestments	4525687	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Longterm Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfLongtermInvestments	3165575	USD
CY2021	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	62190739	USD
CY2020	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	135015731	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	83980247	USD
CY2021	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	40175076	USD
CY2020	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	28579348	USD
CY2019	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	35243895	USD
CY2021	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	0	USD
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	11148752	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	35174873	USD
CY2021	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	0	USD
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	0	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	1000000	USD
CY2021	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	-750040	USD
CY2020	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	600000	USD
CY2019	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	250005	USD
CY2021	sfdl	Purchase Of Fhlb Stock PurchaseOfFhlbStock	1900	USD
CY2020	sfdl	Purchase Of Fhlb Stock PurchaseOfFhlbStock	7239800	USD
CY2019	sfdl	Purchase Of Fhlb Stock PurchaseOfFhlbStock	11907800	USD
CY2021	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	-1770200	USD
CY2020	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	-7422300	USD
CY2019	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	-11575300	USD
CY2021	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	0	USD
CY2020	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	4000000	USD
CY2019	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	0	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	414855	USD
CY2021	us-gaap	Increase Decrease In Loans Held For Sale IncreaseDecreaseInLoansHeldForSale	14458536	USD
CY2020	us-gaap	Increase Decrease In Loans Held For Sale IncreaseDecreaseInLoansHeldForSale	26775117	USD
CY2019	us-gaap	Increase Decrease In Loans Held For Sale IncreaseDecreaseInLoansHeldForSale	21601713	USD
CY2021	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	454332	USD
CY2020	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	578994	USD
CY2019	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	1040366	USD
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2148932	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1243654	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	4634847	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-130964686	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-196237382	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-47497786	USD
CY2021	us-gaap	Increase Decrease In Customer Deposits IncreaseDecreaseInCustomerDeposits	197866728	USD
CY2020	us-gaap	Increase Decrease In Customer Deposits IncreaseDecreaseInCustomerDeposits	146688753	USD
CY2019	us-gaap	Increase Decrease In Customer Deposits IncreaseDecreaseInCustomerDeposits	3910775	USD
CY2021	us-gaap	Proceeds From Federal Home Loan Bank Advances ProceedsFromFederalHomeLoanBankAdvances	0	USD
CY2020	us-gaap	Proceeds From Federal Home Loan Bank Advances ProceedsFromFederalHomeLoanBankAdvances	237585000	USD
CY2019	us-gaap	Proceeds From Federal Home Loan Bank Advances ProceedsFromFederalHomeLoanBankAdvances	342223000	USD
CY2021	us-gaap	Payments For Federal Home Loan Bank Advances PaymentsForFederalHomeLoanBankAdvances	35000000	USD
CY2020	us-gaap	Payments For Federal Home Loan Bank Advances PaymentsForFederalHomeLoanBankAdvances	240723000	USD
CY2019	us-gaap	Payments For Federal Home Loan Bank Advances PaymentsForFederalHomeLoanBankAdvances	338115000	USD
CY2021	us-gaap	Proceeds From Repayments Of Notes Payable ProceedsFromRepaymentsOfNotesPayable	0	USD
CY2020	us-gaap	Proceeds From Repayments Of Notes Payable ProceedsFromRepaymentsOfNotesPayable	0	USD
CY2019	us-gaap	Proceeds From Repayments Of Notes Payable ProceedsFromRepaymentsOfNotesPayable	-2362500	USD
CY2021	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	13668363	USD
CY2020	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	1537211	USD
CY2019	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	881390	USD
CY2021	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	0	USD
CY2020	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	0	USD
CY2019	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	30000000	USD
CY2021	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	0	USD
CY2020	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	-132000	USD
CY2019	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	0	USD
CY2021	us-gaap	Proceeds From Bank Debt ProceedsFromBankDebt	274265000	USD
CY2020	us-gaap	Proceeds From Bank Debt ProceedsFromBankDebt	259600000	USD
CY2019	us-gaap	Proceeds From Bank Debt ProceedsFromBankDebt	0	USD
CY2021	us-gaap	Repayments Of Bank Debt RepaymentsOfBankDebt	-322965000	USD
CY2020	us-gaap	Repayments Of Bank Debt RepaymentsOfBankDebt	-210900000	USD
CY2019	us-gaap	Repayments Of Bank Debt RepaymentsOfBankDebt	0	USD
CY2021	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	0	USD
CY2020	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	12968	USD
CY2019	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	52868	USD
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	1431269	USD
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	1301254	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	1123219	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	126403822	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	192367678	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	35467314	USD
CY2021	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	9597442	USD
CY2020	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	5489098	USD
CY2019	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-169599	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	18025409	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	12536311	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	12705910	USD
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	27622851	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	18025409	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	12536311	USD
CY2021	us-gaap	Interest Paid InterestPaid	3895061	USD
CY2020	us-gaap	Interest Paid InterestPaid	6834112	USD
CY2019	us-gaap	Interest Paid InterestPaid	7882527	USD
CY2021	us-gaap	Income Taxes Paid IncomeTaxesPaid	4226442	USD
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	1475401	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	1764541	USD
CY2021	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	0	USD
CY2020	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	368510	USD
CY2019	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	832800	USD
CY2021	sfdl	Transfers From Premises And Equipment Net To Land Hfs TransfersFromPremisesAndEquipmentNetToLandHFS	1529691	USD
CY2021	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	7725843	USD
CY2020	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-8473423	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-4495436	USD
CY2021	sfdl	Cash Equivalents Original Maturity Period Maximum CashEquivalentsOriginalMaturityPeriodMaximum	P3M
CY2021	sfdl	Investor Funding Period InvestorFundingPeriod	P30D
CY2021	us-gaap	Revenue Recognition Interest RevenueRecognitionInterest	<div style="margin-top:12pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:700;line-height:120%">Interest Income</span></div><div style="margin-top:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Interest on loans is accrued and credited to income monthly based on the principal balance outstanding and the contractual rate on the loan. The Company places loans on non-accrual status when they become greater than 90 days delinquent or when, in the opinion of management, full collection of principal or interest is unlikely. When interest accrual is discontinued, all unpaid accrued interest is reversed. Interest income is subsequently recognized only to the extent cash payments are received first to principal and then to interest income. The loans are returned to an accrual status when full collection of principal and interest appears likely.</span></div>
CY2021	sfdl	Loans And Leases Receivable Placed On Nonaccrual Status Period Delinquent LoansAndLeasesReceivablePlacedOnNonaccrualStatusPeriodDelinquent	P90D
CY2021	us-gaap	Advertising Expense AdvertisingExpense	1100000	USD
CY2020	us-gaap	Advertising Expense AdvertisingExpense	1100000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	796000	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	12773891	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	3252884	shares
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.93
CY2020	us-gaap	Available For Sale Securities Gross Unrealized Loss AvailableForSaleSecuritiesGrossUnrealizedLoss	2269886	USD
CY2021	us-gaap	Use Of Estimates UseOfEstimates	. Material estimates that are particularly susceptible to significant changes include:<div style="margin-top:3pt;padding-left:27pt;text-indent:-9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">• Determination of the allowance for loan losses and provision for credit losses</span></div><div style="margin-top:3pt;padding-left:27pt;text-indent:-9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">• Valuation of real estate acquired in conjunction with foreclosures or in satisfaction of loans</span></div><div style="margin-top:3pt;padding-left:27pt;text-indent:-9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">• Income taxes, including tax provisions and realization of deferred tax assets</span></div><div style="margin-top:3pt;padding-left:27pt;text-indent:-9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">• Fair value of assets and liabilities</span></div>
CY2021	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	Risks and UncertaintiesIn the normal course of its business, the Company encounters two significant types of risk: economic and regulatory. There are three main components of economic risk: interest rate risk, credit risk, and market risk. The Company is subject to interest rate risk to the degree that its interest-bearing liabilities mature or reprice at different speeds, or on different bases, than its interest-earning assets. Credit risk is the risk of default on the Company’s loan portfolio that results from borrowers’ inability or unwillingness to make contractually required payments. Market risk reflects changes in the value of collateral underlying loans receivable, the valuation of real estate held by the Company, and the valuation of loans held for sale and securities available for sale. The Company is subject to the regulations of various government agencies. These regulations can and do change significantly from period to period. The Company also undergoes periodic examinations by the bank regulatory agencies, which may subject it to further changes with respect to asset valuations, amounts of required loss allowances, and operating restrictions, resulting from the regulators’ judgments based on information available to them at the time of the
CY2021	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	lassificationsCertain amounts in prior years’ consolidated financial statements have been reclassified to conform to current period classifications.
CY2021Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	675913305	USD
CY2021	us-gaap	Available For Sale Securities Gross Unrealized Gains AvailableForSaleSecuritiesGrossUnrealizedGains	12591188	USD
CY2021	us-gaap	Available For Sale Securities Gross Unrealized Loss AvailableForSaleSecuritiesGrossUnrealizedLoss	5655435	USD
CY2021Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	682849058	USD
CY2020Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	572137595	USD
CY2020	us-gaap	Available For Sale Securities Gross Unrealized Gains AvailableForSaleSecuritiesGrossUnrealizedGains	19456692	USD
CY2020Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	589324401	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	80651	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	76617	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	7891953	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	7878402	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	91419245	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	92355997	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	223004344	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	227447128	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	675913305	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	682849058	USD
CY2021Q4	sfdl	Available For Sale Securities Pledged As Collateral Amortized Cost Basis AvailableForSaleSecuritiesPledgedAsCollateralAmortizedCostBasis	335600000	USD
CY2021Q4	sfdl	Afs Securities Pledgedas Collateral Fair Value AFSSecuritiesPledgedasCollateralFairValue	342600000	USD
CY2020Q4	sfdl	Available For Sale Securities Pledged As Collateral Amortized Cost Basis AvailableForSaleSecuritiesPledgedAsCollateralAmortizedCostBasis	263300000	USD
CY2020Q4	sfdl	Afs Securities Pledgedas Collateral Fair Value AFSSecuritiesPledgedasCollateralFairValue	274400000	USD
CY2021	sfdl	Proceeds From Sale Of Available For Sale Securities Including Mortgage Backed Securities ProceedsFromSaleOfAvailableForSaleSecuritiesIncludingMortgageBackedSecurities	0	USD
CY2020	sfdl	Proceeds From Sale Of Available For Sale Securities Including Mortgage Backed Securities ProceedsFromSaleOfAvailableForSaleSecuritiesIncludingMortgageBackedSecurities	25000000	USD
CY2019	sfdl	Proceeds From Sale Of Available For Sale Securities Including Mortgage Backed Securities ProceedsFromSaleOfAvailableForSaleSecuritiesIncludingMortgageBackedSecurities	96500000	USD
CY2020	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	1300000	USD
CY2019	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	1500000	USD
CY2020	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	0	USD
CY2019	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	636000	USD
CY2021Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	240863386	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	3854991	USD
CY2021Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	84912501	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	1800444	USD
CY2021Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	325775887	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	5655435	USD
CY2020Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	106073904	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	1430106	USD
CY2020Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	82910611	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	839780	USD
CY2020Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	188984515	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	2269886	USD
CY2021Q4	us-gaap	Availableforsale Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions1 AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions1	83	security
CY2020Q4	us-gaap	Availableforsale Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions1 AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions1	88	security
CY2021Q4	us-gaap	Held To Maturity Securities Amortized Cost Before Other Than Temporary Impairment HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment	23506768	USD
CY2021	sfdl	Heldtomaturitygrossunrealizedgains Heldtomaturitygrossunrealizedgains	577005	USD
CY2021	sfdl	Heldtomaturitygrossunrealizedlosses Heldtomaturitygrossunrealizedlosses	363365	USD
CY2021Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	23720408	USD
CY2020Q4	us-gaap	Held To Maturity Securities Amortized Cost Before Other Than Temporary Impairment HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment	18254394	USD
CY2020	sfdl	Heldtomaturitygrossunrealizedgains Heldtomaturitygrossunrealizedgains	984015	USD
CY2020	sfdl	Heldtomaturitygrossunrealizedlosses Heldtomaturitygrossunrealizedlosses	33122	USD
CY2020Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	19205287	USD
CY2021Q4	us-gaap	Held To Maturity Securities Restricted HeldToMaturitySecuritiesRestricted	9000000	USD
CY2021Q4	sfdl	Heldtomaturitypledgedascollateralfairvalue Heldtomaturitypledgedascollateralfairvalue	9500000	USD
CY2020Q4	sfdl	Heldtomaturitypledgedascollateralfairvalue Heldtomaturitypledgedascollateralfairvalue	13400000	USD
CY2021Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	9969587	USD
CY2021Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	206472	USD
CY2021Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	3442229	USD
CY2021Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	156893	USD
CY2021Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	13411816	USD
CY2021Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	363365	USD
CY2021Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	507630182	USD
CY2020Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	488155294	USD
CY2021Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	4038414	USD
CY2020Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	5693400	USD
CY2021Q4	sfdl	Financing Receivable Gross And Loans Receivable Held For Sale Net FinancingReceivableGrossAndLoansReceivableHeldForSaleNet	511668596	USD
CY2020Q4	sfdl	Financing Receivable Gross And Loans Receivable Held For Sale Net FinancingReceivableGrossAndLoansReceivableHeldForSaleNet	493848694	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	11087164	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	12842896	USD
CY2021Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	1084623	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	1838426	USD
CY2021Q4	sfdl	Loans Receivable Allowance Loans In Process And Deferred Loan Fees LoansReceivableAllowanceLoansInProcessAndDeferredLoanFees	12171787	USD
CY2020Q4	sfdl	Loans Receivable Allowance Loans In Process And Deferred Loan Fees LoansReceivableAllowanceLoansInProcessAndDeferredLoanFees	14681322	USD
CY2021Q4	us-gaap	Notes Receivable Net NotesReceivableNet	499496809	USD
CY2020Q4	us-gaap	Notes Receivable Net NotesReceivableNet	479167372	USD
CY2021Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	507630182	USD
CY2020Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	488155294	USD
CY2021Q4	us-gaap	Notes And Loans Receivable Gross Noncurrent NotesAndLoansReceivableGrossNoncurrent	2147276	USD
CY2021Q4	us-gaap	Notes And Loans Receivable Gross Current NotesAndLoansReceivableGrossCurrent	505482906	USD
CY2021Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	507630182	USD
CY2020Q4	us-gaap	Notes And Loans Receivable Gross Noncurrent NotesAndLoansReceivableGrossNoncurrent	2417185	USD
CY2020Q4	us-gaap	Notes And Loans Receivable Gross Current NotesAndLoansReceivableGrossCurrent	438632491	USD
CY2020Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	488155294	USD
CY2021Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	2683387	USD
CY2021Q4	sfdl	Financing Receivable Recorded Investment Nonaccrual Status Percentage FinancingReceivableRecordedInvestmentNonaccrualStatusPercentage	0.005
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	3125472	USD
CY2020Q4	sfdl	Financing Receivable Recorded Investment Nonaccrual Status Percentage FinancingReceivableRecordedInvestmentNonaccrualStatusPercentage	0.007
CY2021	sfdl	Financing Receivable Recorded Investment In Non Accrual Status Increase Decrease FinancingReceivableRecordedInvestmentInNonAccrualStatusIncreaseDecrease	-442085	USD
CY2021	sfdl	Financing Receivable Recorded Investment In Non Accrual Status Percent Increase Decrease FinancingReceivableRecordedInvestmentInNonAccrualStatusPercentIncreaseDecrease	-0.141
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	12842896	USD
CY2021	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-2404117	USD
CY2021	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	136622	USD
CY2021	us-gaap	Allowance For Doubtful Accounts Receivable Recoveries AllowanceForDoubtfulAccountsReceivableRecoveries	785007	USD
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	11087164	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	9225574	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	3600000	USD
CY2020	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	281270	USD
CY2020	us-gaap	Allowance For Doubtful Accounts Receivable Recoveries AllowanceForDoubtfulAccountsReceivableRecoveries	298592	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	12842896	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	9171717	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	375000	USD
CY2019	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	985317	USD
CY2019	us-gaap	Allowance For Doubtful Accounts Receivable Recoveries AllowanceForDoubtfulAccountsReceivableRecoveries	664174	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	9225574	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	0	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	11087164	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	11087164	USD
CY2021Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	2323307	USD
CY2021Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	505306875	USD
CY2021Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	507630182	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	0	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	12842896	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	12842896	USD
CY2020Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	2219330	USD
CY2020Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	485935964	USD
CY2020Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	488155294	USD
CY2021	sfdl	Loans And Leases Receivable Valuation Period For New Appraisal LoansAndLeasesReceivableValuationPeriodForNewAppraisal	P24M
CY2021	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	2600000	USD
CY2020	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	3900000	USD
CY2021Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	2323307	USD
CY2021Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	3372027	USD
CY2021Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	0	USD
CY2021	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	2572276	USD
CY2021	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	22199	USD
CY2020Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	2219330	USD
CY2020Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	3268049	USD
CY2020Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	0	USD
CY2020	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	82925	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	3229883	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	4305403	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	0	USD
CY2019	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	6394612	USD
CY2019	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	54372	USD
CY2021	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	3
CY2021Q4	sfdl	Tdrs Included In Impaired Loans TdrsIncludedInImpairedLoans	694000000	USD
CY2020	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	3
CY2020Q4	sfdl	Tdrs Included In Impaired Loans TdrsIncludedInImpairedLoans	315000	USD
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CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	48139208	USD
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	22092310	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	21563951	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	25236915	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	26575257	USD
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	2000000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1900000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1600000	USD
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	2300000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	2300000	USD
CY2021	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	477000	USD
CY2020	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	461000	USD
CY2019	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	460000	USD
CY2021Q4	sfdl	Operating Leases Number Of Lease Agreements OperatingLeasesNumberOfLeaseAgreements	6	lease_agreement
CY2021Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	586000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	2400000	USD
CY2021Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	130000	USD
CY2020Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	499000	USD
CY2020Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	498610	USD
CY2019Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	677740	USD
CY2018Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	722442	USD
CY2021	sfdl	Other Real Estate Foreclosed Assets And Repossessed Assets Additions OtherRealEstateForeclosedAssetsAndRepossessedAssetsAdditions	0	USD
CY2020	sfdl	Other Real Estate Foreclosed Assets And Repossessed Assets Additions OtherRealEstateForeclosedAssetsAndRepossessedAssetsAdditions	368510	USD
CY2019	sfdl	Other Real Estate Foreclosed Assets And Repossessed Assets Additions OtherRealEstateForeclosedAssetsAndRepossessedAssetsAdditions	832800	USD
CY2021	sfdl	Other Real Estate Foreclosed Assets And Repossessed Assets Sales OtherRealEstateForeclosedAssetsAndRepossessedAssetsSales	348910	USD
CY2020	sfdl	Other Real Estate Foreclosed Assets And Repossessed Assets Sales OtherRealEstateForeclosedAssetsAndRepossessedAssetsSales	532640	USD
CY2019	sfdl	Other Real Estate Foreclosed Assets And Repossessed Assets Sales OtherRealEstateForeclosedAssetsAndRepossessedAssetsSales	855502	USD
CY2021	sfdl	Other Real Estate Foreclosed Assets And Repossessed Assets Write Downs OtherRealEstateForeclosedAssetsAndRepossessedAssetsWriteDowns	20000	USD
CY2020	sfdl	Other Real Estate Foreclosed Assets And Repossessed Assets Write Downs OtherRealEstateForeclosedAssetsAndRepossessedAssetsWriteDowns	15000	USD
CY2019	sfdl	Other Real Estate Foreclosed Assets And Repossessed Assets Write Downs OtherRealEstateForeclosedAssetsAndRepossessedAssetsWriteDowns	22000	USD
CY2021Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	129700	USD
CY2020Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	498610	USD
CY2019Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	677740	USD
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CY2020Q4	us-gaap	Demand Deposit Accounts DemandDepositAccounts	372070032	USD
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CY2020Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	74433571	USD
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CY2020Q4	sfdl	Deposits Excluding Time Deposits DepositsExcludingTimeDeposits	737571178	USD
CY2021Q4	us-gaap	Time Deposits TimeDeposits	157361926	USD
CY2020Q4	us-gaap	Time Deposits TimeDeposits	180525057	USD
CY2021Q4	us-gaap	Deposits Deposits	1115962963	USD
CY2020Q4	us-gaap	Deposits Deposits	918096235	USD
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CY2020Q4	us-gaap	Interest Bearing Domestic Deposit Brokered InterestBearingDomesticDepositBrokered	16000000	USD
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CY2021Q4	us-gaap	Deposit Liabilities Reclassified As Loans Receivable1 DepositLiabilitiesReclassifiedAsLoansReceivable1	68000	USD
CY2021Q4	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	90600000	USD
CY2020Q4	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	106800000	USD
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CY2020Q4	sfdl	Timedeposits250000ormore Timedeposits250000ormore	49600000	USD
CY2021Q4	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	118119148	USD
CY2020Q4	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	128758122	USD
CY2021Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	26189318	USD
CY2020Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	27550051	USD
CY2021Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	7148260	USD
CY2020Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	10555458	USD
CY2021Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	2815491	USD
CY2020Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	10847730	USD
CY2021Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	3089709	USD
CY2020Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	2813696	USD
CY2021Q4	us-gaap	Time Deposits TimeDeposits	157361926	USD
CY2020Q4	us-gaap	Time Deposits TimeDeposits	180525057	USD
CY2020Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	35000000	USD
CY2021Q4	sfdl	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged Amortized Cost FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledgedAmortizedCost	94300000	USD
CY2021Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged1 FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1	94300000	USD
CY2020Q4	sfdl	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged Amortized Cost FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledgedAmortizedCost	104700000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged1 FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1	106200000	USD
CY2021	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	1	USD
CY2021Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Amount Of Available Unused Funds FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds	369000000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Amount Of Available Unused Funds FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds	304300000	USD
CY2021Q4	us-gaap	Federal Funds Purchased FederalFundsPurchased	0	USD
CY2020Q4	us-gaap	Federal Funds Purchased FederalFundsPurchased	48700000	USD
CY2021Q4	us-gaap	Other Borrowings OtherBorrowings	26800000	USD
CY2020Q4	us-gaap	Other Borrowings OtherBorrowings	13100000	USD
CY2021Q4	sfdl	Financial Instruments Owned And Pledged As Collateral At Amortized Cost FinancialInstrumentsOwnedAndPledgedAsCollateralAtAmortizedCost	45300000	USD
CY2021Q4	us-gaap	Financial Instruments Owned And Pledged As Collateral At Fair Value FinancialInstrumentsOwnedAndPledgedAsCollateralAtFairValue	45200000	USD
CY2020Q4	sfdl	Financial Instruments Owned And Pledged As Collateral At Amortized Cost FinancialInstrumentsOwnedAndPledgedAsCollateralAtAmortizedCost	26600000	USD
CY2020Q4	us-gaap	Financial Instruments Owned And Pledged As Collateral At Fair Value FinancialInstrumentsOwnedAndPledgedAsCollateralAtFairValue	26800000	USD
CY2020	us-gaap	Conversion Of Stock Shares Converted1 ConversionOfStockSharesConverted1	295600	shares
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	2664305	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	1663883	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	1437595	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	629809	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	295074	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	145412	USD
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	3294114	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1958957	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1583007	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	211703	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-361167	USD
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CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-20833	USD
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CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	215277	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1576957	USD
CY2019	us-gaap	Tax Cuts And Jobs Act Of2017 Change In Tax Rate Deferred Tax Asset Income Tax Expense TaxCutsAndJobsActOf2017ChangeInTaxRateDeferredTaxAssetIncomeTaxExpense	1679550	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-382000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	96543	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3509391	USD
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	3419489	USD
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	1811788	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	1989548	USD
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	450957	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	81936	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	100820	USD
CY2021	sfdl	Income Tax Reconciliation State And Local Income Taxes Write Down IncomeTaxReconciliationStateAndLocalIncomeTaxesWriteDown	-284935	USD
CY2020	sfdl	Income Tax Reconciliation State And Local Income Taxes Write Down IncomeTaxReconciliationStateAndLocalIncomeTaxesWriteDown	-250044	USD
CY2019	sfdl	Income Tax Reconciliation State And Local Income Taxes Write Down IncomeTaxReconciliationStateAndLocalIncomeTaxesWriteDown	-291768	USD
CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense Life Insurance IncomeTaxReconciliationNondeductibleExpenseLifeInsurance	-133350	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Life Insurance IncomeTaxReconciliationNondeductibleExpenseLifeInsurance	-120383	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Life Insurance IncomeTaxReconciliationNondeductibleExpenseLifeInsurance	-142508	USD
CY2021	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	57230	USD
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	53660	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	23458	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3509391	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1576957	USD
CY2019	us-gaap	Tax Cuts And Jobs Act Of2017 Change In Tax Rate Deferred Tax Asset Income Tax Expense TaxCutsAndJobsActOf2017ChangeInTaxRateDeferredTaxAssetIncomeTaxExpense	1679550	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	761937	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	670582	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	2408028	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	2781850	USD
CY2021Q4	sfdl	Deferred Tax Assets Other Real Estate Owned DeferredTaxAssetsOtherRealEstateOwned	7579	USD
CY2020Q4	sfdl	Deferred Tax Assets Other Real Estate Owned DeferredTaxAssetsOtherRealEstateOwned	3248	USD
CY2021Q4	sfdl	Deferred Tax Assets Tax Deferred Expense Financial Reporting Fees DeferredTaxAssetsTaxDeferredExpenseFinancialReportingFees	78527	USD
CY2020Q4	sfdl	Deferred Tax Assets Tax Deferred Expense Financial Reporting Fees DeferredTaxAssetsTaxDeferredExpenseFinancialReportingFees	74743	USD
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	467649	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	410419	USD
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	52806	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	105993	USD
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	3872112	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	4046835	USD
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	467649	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	410419	USD
CY2021Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	3404463	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	3636416	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	72195	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	72196	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	913635	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	1040831	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	154463	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	43943	USD
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CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	3179000	USD
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CY2021Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.98
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CY2020Q4	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	0	USD
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CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	1328000	USD
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CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	1010000	USD
CY2020Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	3832000	USD
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	264000	USD
CY2020Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	441000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	105000	USD
CY2020Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	767000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	1064000	USD

Files In Submission

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2021 Q4 Form 10-K Financial Statement

#000093905722000085 Filed on March 29, 2022

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$SFDL SECURITY FEDERAL CORP Stock $sfdl

2021 Q4 Form 10-K Financial Statement

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SECURITY FEDERAL CORP Stock $sfdl