$SFDL
SECURITY FEDERAL CORP Stock $sfdl

$sfdl Overview Financials Valuation SEC Filings Company Website

2021 Q3 Form 10-Q Financial Statement

#000093905721000339 Filed on November 15, 2021

Income Statement

Concept	2021 Q3	2020 Q4	2020 Q3
Revenue	$9.668M	$9.564M	$9.339M
YoY Change	3.52%	4.71%	-3.13%
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	$781.2K	$490.0K	$689.1K
YoY Change	13.36%	16.67%	6.87%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$845.0K	$1.175M	$1.431M
YoY Change	-40.95%	-47.47%	-37.54%
% of Operating Profit
Other Income/Expense, Net	$802.0K		$513.7K
YoY Change	56.12%		-51.23%
Pretax Income	$5.969M	$3.832M	$1.010M
YoY Change	490.99%	112.77%	-62.51%
Income Tax	$1.327M	$767.0K	$105.0K
% Of Pretax Income	22.23%	20.02%	10.4%
Net Earnings	$1.549M	$3.065M	$3.179M
YoY Change	-51.27%	91.32%	198.71%
Net Earnings / Revenue	16.02%	32.05%	34.04%
Basic Earnings Per Share	$1.43	$0.94	$0.28
Diluted Earnings Per Share	$1.428M	$0.94	$0.28
COMMON SHARES
Basic Shares Outstanding	3.253M shares	3.253M shares	3.253M shares
Diluted Shares Outstanding		3.253M shares	3.253M shares

Balance Sheet

Concept	2021 Q3	2020 Q4	2020 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$13.56M	$18.03M	$15.61M
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	$26.19M	$26.58M	$26.70M
YoY Change	-1.89%	-2.37%	1.22%
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	$1.230B	$1.172B	$1.129B
YoY Change	8.95%	21.64%	13.92%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$2.400M	$2.400M	$2.500M
YoY Change	-4.0%	-11.11%	-10.71%
Deferred Revenue
YoY Change
Short-Term Debt	$42.00M	$61.80M	$35.80M
YoY Change	17.32%	432.76%	138.67%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$2.400M	$2.400M	$2.500M
YoY Change	-4.0%	-11.11%	-10.71%
LONG-TERM LIABILITIES
Long-Term Debt	$35.20M	$35.20M	$35.20M
YoY Change	0.0%	-14.56%	214.29%
Other Long-Term Liabilities	$7.100M	$7.100M	$6.400M
YoY Change	10.94%	14.52%	-7.25%
Total Long-Term Liabilities	$42.30M	$42.30M	$41.60M
YoY Change	1.68%	-10.76%	129.83%
TOTAL LIABILITIES
Total Short-Term Liabilities	$2.400M	$2.400M	$2.500M
Total Long-Term Liabilities	$42.30M	$42.30M	$41.60M
Total Liabilities	$1.114B	$1.060B	$1.020B
YoY Change	9.16%	21.61%	13.48%
SHAREHOLDERS EQUITY
Retained Earnings	$94.70M	$85.03M	$82.29M
YoY Change	15.08%	7.25%	5.53%
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	$96.46M	$111.9M	$109.3M
YoY Change
Total Liabilities & Shareholders Equity	$1.230B	$1.172B	$1.129B
YoY Change	8.95%	21.64%	13.92%

Cashflow Statement

Concept	2021 Q3	2020 Q4	2020 Q3
OPERATING ACTIVITIES
Net Income	$1.549M	$3.065M	$3.179M
YoY Change	-51.27%	91.32%	198.71%
Depreciation, Depletion And Amortization	$781.2K	$490.0K	$689.1K
YoY Change	13.36%	16.67%	6.87%
Cash From Operating Activities	$8.650M	$2.020M	$2.660M
YoY Change	225.19%	-41.45%	-25.07%
INVESTING ACTIVITIES
Capital Expenditures	-$500.0K	-$360.0K	-$110.0K
YoY Change	354.55%	-71.43%	-91.27%
Acquisitions
YoY Change
Other Investing Activities	-$36.70M	-$38.24M	-$29.20M
YoY Change	25.68%	-265.4%	112.52%
Cash From Investing Activities	-$37.20M	-$38.61M	-$29.32M
YoY Change	26.88%	-276.62%	95.34%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	28.96M	39.01M	26.92M
YoY Change	7.58%	-246.87%	89.31%
NET CHANGE
Cash From Operating Activities	8.650M	2.020M	2.660M
Cash From Investing Activities	-37.20M	-38.61M	-29.32M
Cash From Financing Activities	28.96M	39.01M	26.92M
Net Change In Cash	410.0K	2.420M	260.0K
YoY Change	57.69%	-293.6%	-90.58%
FREE CASH FLOW
Cash From Operating Activities	$8.650M	$2.020M	$2.660M
Capital Expenditures	-$500.0K	-$360.0K	-$110.0K
Free Cash Flow	$9.150M	$2.380M	$2.770M
YoY Change	230.32%	-49.47%	-42.41%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Amendment Flag AmendmentFlag	false
	dei	Entity Central Index Key EntityCentralIndexKey	0000818677
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
	dei	Document Type DocumentType	10-Q
	dei	City Area Code CityAreaCode	803
	dei	Local Phone Number LocalPhoneNumber	641-3000
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Document Type DocumentType	10-Q
	dei	Entity Registrant Name EntityRegistrantName	SECURITY FEDERAL CORPORATION
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2021-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2021-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	000-16120
	dei	Entity Registrant Name EntityRegistrantName	SECURITY FEDERAL CORPORATION
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	SC
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	57-0858504
	dei	Entity Address Address Line1 EntityAddressAddressLine1	238 Richland Avenue Northwest
	dei	Entity Address City Or Town EntityAddressCityOrTown	A
	dei	Entity Address State Or Province EntityAddressStateOrProvince	SC
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	29801
	dei	Entity Small Business EntitySmallBusiness	true
	dei	Entity Filer Category EntityFilerCategory	Non-accelerated Filer
	dei	Entity Filer Category EntityFilerCategory	Non-accelerated Filer
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
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	sfdl	Service Feeson Deposit Accounts ServiceFeesonDepositAccounts	695561	USD
CY2021Q3	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	187657	USD
CY2020Q3	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	202007	USD
	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	468083	USD
	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	513783	USD
CY2021Q3	sfdl	Trust Income TrustIncome	359035	USD
CY2020Q3	sfdl	Trust Income TrustIncome	243990	USD
	sfdl	Trust Income TrustIncome	1005517	USD
	sfdl	Trust Income TrustIncome	782210	USD
CY2021Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	155000	USD
CY2020Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	138250	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	485000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	408250	USD
CY2021Q3	sfdl	Checkcardrevenue Checkcardrevenue	615568	USD
CY2020Q3	sfdl	Checkcardrevenue Checkcardrevenue	499176	USD
	sfdl	Checkcardrevenue Checkcardrevenue	1811216	USD
	sfdl	Checkcardrevenue Checkcardrevenue	1416946	USD
CY2021Q3	sfdl	Grant Revenue GrantRevenue	1826265	USD
CY2020Q3	sfdl	Grant Revenue GrantRevenue	171310	USD
	sfdl	Grant Revenue GrantRevenue	1826265	USD
	sfdl	Grant Revenue GrantRevenue	316814	USD
CY2021Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	202314	USD
CY2020Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	187269	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	669379	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	629814	USD
CY2021Q3	us-gaap	Noninterest Income NoninterestIncome	4529619	USD
CY2020Q3	us-gaap	Noninterest Income NoninterestIncome	2988251	USD
	us-gaap	Noninterest Income NoninterestIncome	9990763	USD
	us-gaap	Noninterest Income NoninterestIncome	8590128	USD
CY2021Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	4757937	USD
CY2020Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	4743327	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	14145363	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	13654330	USD
CY2021Q3	us-gaap	Occupancy Net OccupancyNet	641555	USD
CY2020Q3	us-gaap	Occupancy Net OccupancyNet	669258	USD
	us-gaap	Occupancy Net OccupancyNet	1922369	USD
	us-gaap	Occupancy Net OccupancyNet	1864202	USD
CY2021Q3	us-gaap	Advertising Expense AdvertisingExpense	275947	USD
CY2020Q3	us-gaap	Advertising Expense AdvertisingExpense	325584	USD
	us-gaap	Advertising Expense AdvertisingExpense	671186	USD
	us-gaap	Advertising Expense AdvertisingExpense	776605	USD
CY2021Q3	us-gaap	Depreciation Depreciation	781217	USD
CY2020Q3	us-gaap	Depreciation Depreciation	689118	USD
	us-gaap	Depreciation Depreciation	2354958	USD
	us-gaap	Depreciation Depreciation	2126683	USD
CY2021Q3	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	73845	USD
CY2020Q3	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	51858	USD
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	215181	USD
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	67938	USD
CY2021Q3	us-gaap	Other Revenue Expense From Real Estate Operations OtherRevenueExpenseFromRealEstateOperations	-55000	USD
CY2020Q3	us-gaap	Other Revenue Expense From Real Estate Operations OtherRevenueExpenseFromRealEstateOperations	22049	USD
	us-gaap	Other Revenue Expense From Real Estate Operations OtherRevenueExpenseFromRealEstateOperations	115840	USD
	us-gaap	Other Revenue Expense From Real Estate Operations OtherRevenueExpenseFromRealEstateOperations	27329	USD
CY2021Q3	us-gaap	Professional Fees ProfessionalFees	182684	USD
CY2020Q3	us-gaap	Professional Fees ProfessionalFees	190379	USD
	us-gaap	Professional Fees ProfessionalFees	512998	USD
	us-gaap	Professional Fees ProfessionalFees	563246	USD
CY2021Q3	us-gaap	Supplies Expense SuppliesExpense	284434	USD
CY2020Q3	us-gaap	Supplies Expense SuppliesExpense	232788	USD
	us-gaap	Supplies Expense SuppliesExpense	859357	USD
	us-gaap	Supplies Expense SuppliesExpense	764570	USD
CY2021Q3	us-gaap	Communication Communication	100113	USD
CY2020Q3	us-gaap	Communication Communication	135645	USD
	us-gaap	Communication Communication	313229	USD
	us-gaap	Communication Communication	372631	USD
CY2021Q3	us-gaap	Postage Expense PostageExpense	16469	USD
CY2020Q3	us-gaap	Postage Expense PostageExpense	94306	USD
	us-gaap	Postage Expense PostageExpense	147600	USD
	us-gaap	Postage Expense PostageExpense	249512	USD
CY2021Q3	us-gaap	General Insurance Expense GeneralInsuranceExpense	77731	USD
CY2020Q3	us-gaap	General Insurance Expense GeneralInsuranceExpense	62318	USD
	us-gaap	General Insurance Expense GeneralInsuranceExpense	248691	USD
	us-gaap	General Insurance Expense GeneralInsuranceExpense	226983	USD
CY2021Q3	us-gaap	Other Expenses OtherExpenses	801964	USD
CY2020Q3	us-gaap	Other Expenses OtherExpenses	513685	USD
	us-gaap	Other Expenses OtherExpenses	1829544	USD
	us-gaap	Other Expenses OtherExpenses	1681363	USD
CY2021Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	8048896	USD
CY2020Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	7686217	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	23104636	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	22320734	USD
CY2021Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	5969540	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	1009898	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	13738818	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	4795456	USD
CY2021Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1327070	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	105187	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2993414	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	810227	USD
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	4642470	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	904711	USD
	us-gaap	Net Income Loss NetIncomeLoss	10745404	USD
	us-gaap	Net Income Loss NetIncomeLoss	3985229	USD
CY2021Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.43
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.28
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.30
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.25
CY2021Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.11
CY2020Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.10
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.33
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.30
CY2021Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	3252884	shares
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	3252884	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	3252884	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	3199603	shares
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	4642470	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	904711	USD
CY2021Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-923669	USD
CY2020Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	495301	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetOfTax	-2859580	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetOfTax	1508962	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Before Reclassification Adjustments Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesBeforeReclassificationAdjustmentsTax	34837	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	104509	USD
CY2021Q3	sfdl	Other Comprehensive Income Amortizationon Unrealized Gainon Afs Transferto Htm Tax OtherComprehensiveIncomeAmortizationonUnrealizedGainonAFSTransfertoHTMTax	437	USD
CY2020Q3	sfdl	Other Comprehensive Income Amortizationon Unrealized Gainon Afs Transferto Htm Tax OtherComprehensiveIncomeAmortizationonUnrealizedGainonAFSTransfertoHTMTax	-1878	USD
CY2020Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	325289	USD
CY2021Q3	sfdl	Amortizationof Unrealized Gainson Afs Securities Transferredto Htm AmortizationofUnrealizedGainsonAFSSecuritiesTransferredtoHTM	1311	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Transfers From Held To Maturity To Available For Sale Securities Net Of Tax OtherComprehensiveIncomeLossTransfersFromHeldToMaturityToAvailableForSaleSecuritiesNetOfTax	-5635	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-2858269	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1398818	USD
CY2021Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1784201	USD
CY2020Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	2303529	USD
	us-gaap	Net Income Loss NetIncomeLoss	10745404	USD
	us-gaap	Net Income Loss NetIncomeLoss	3985229	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-1588002	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	3051380	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetOfTax	-4896535	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsNetOfTax	9375250	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	333167	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	999499	USD
	sfdl	Other Comprehensive Income Amortizationon Unrealized Gainon Afs Transferto Htm Tax OtherComprehensiveIncomeAmortizationonUnrealizedGainonAFSTransfertoHTMTax	72	USD
	sfdl	Other Comprehensive Income Amortizationon Unrealized Gainon Afs Transferto Htm Tax OtherComprehensiveIncomeAmortizationonUnrealizedGainonAFSTransfertoHTMTax	-5733	USD
	sfdl	Amortizationof Unrealized Gainson Afs Securities Transferredto Htm AmortizationofUnrealizedGainsonAFSSecuritiesTransferredtoHTM	215	USD
	us-gaap	Other Comprehensive Income Loss Transfers From Held To Maturity To Available For Sale Securities Net Of Tax OtherComprehensiveIncomeLossTransfersFromHeldToMaturityToAvailableForSaleSecuritiesNetOfTax	-17199	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-4896320	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	8358552	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	5849084	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	12343781	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	91758005	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	1064187	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-2159363	USD
CY2020Q1	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	12968	USD
CY2020Q1	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities Net Of Adjustments StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments	5912000	USD
CY2020Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	325408	USD
CY2020Q1	us-gaap	Stockholders Equity StockholdersEquity	96262389	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	2016331	USD
CY2020Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	9119097	USD
CY2020Q2	us-gaap	Stockholders Equity StockholdersEquity	107072528	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	904711	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1398818	USD
CY2020Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	325269	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	109050788	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	111905746	USD
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	3178792	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-5465436	USD
CY2021Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	357817	USD
CY2021Q1	us-gaap	Stockholders Equity StockholdersEquity	109261285	USD
CY2021Q2	us-gaap	Net Income Loss NetIncomeLoss	2924142	USD
CY2021Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	3427385	USD
CY2021Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	357818	USD
CY2021Q2	us-gaap	Stockholders Equity StockholdersEquity	115254994	USD
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	4642470	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-2858269	USD
CY2021Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	357817	USD
CY2021Q3	us-gaap	Stockholders Equity StockholdersEquity	116681378	USD
	us-gaap	Net Income Loss NetIncomeLoss	10745404	USD
	us-gaap	Net Income Loss NetIncomeLoss	3985229	USD
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1471810	USD
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1401863	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-5016096	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-3246360	USD
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-2270000	USD
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	3600000	USD
	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	485000	USD
	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	408250	USD
	us-gaap	Loans And Leases Receivable Gain Loss On Sales Net LoansAndLeasesReceivableGainLossOnSalesNet	3022755	USD
	us-gaap	Loans And Leases Receivable Gain Loss On Sales Net LoansAndLeasesReceivableGainLossOnSalesNet	2494084	USD
	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	0	USD
	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	1332666	USD
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	105422	USD
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	46354	USD
	us-gaap	Real Estate Owned Valuation Allowance Amounts Applied RealEstateOwnedValuationAllowanceAmountsApplied	20000	USD
	us-gaap	Real Estate Owned Valuation Allowance Amounts Applied RealEstateOwnedValuationAllowanceAmountsApplied	0	USD
	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	247947	USD
	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	276664	USD
	us-gaap	Amortization Of Deferred Loan Origination Fees Net AmortizationOfDeferredLoanOriginationFeesNet	-3643268	USD
	us-gaap	Amortization Of Deferred Loan Origination Fees Net AmortizationOfDeferredLoanOriginationFeesNet	-805925	USD
	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	91709578	USD
	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	79231518	USD
	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	86582554	USD
	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	80242011	USD
	us-gaap	Increase Decrease In Interest And Dividends Receivable IncreaseDecreaseInInterestAndDividendsReceivable	22083	USD
	us-gaap	Increase Decrease In Interest And Dividends Receivable IncreaseDecreaseInInterestAndDividendsReceivable	614618	USD
	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	40942	USD
	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	30775	USD
	us-gaap	Increase Decrease In Accrued Investment Income Receivable IncreaseDecreaseInAccruedInvestmentIncomeReceivable	77245	USD
	us-gaap	Increase Decrease In Accrued Investment Income Receivable IncreaseDecreaseInAccruedInvestmentIncomeReceivable	-251762	USD
	us-gaap	Increase Decrease In Customer Advances IncreaseDecreaseInCustomerAdvances	241026	USD
	us-gaap	Increase Decrease In Customer Advances IncreaseDecreaseInCustomerAdvances	353843	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-560159	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	648115	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	21049287	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	7336291	USD
	us-gaap	Payments To Acquire Mortgage Backed Securities Mbs Categorized As Available For Sale PaymentsToAcquireMortgageBackedSecuritiesMBSCategorizedAsAvailableForSale	85337142	USD
	us-gaap	Payments To Acquire Mortgage Backed Securities Mbs Categorized As Available For Sale PaymentsToAcquireMortgageBackedSecuritiesMBSCategorizedAsAvailableForSale	68855028	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	42244294	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	35555734	USD
	us-gaap	Payments To Acquire Mortgage Backed Securities Mbs Categorized As Held To Maturity PaymentsToAcquireMortgageBackedSecuritiesMBSCategorizedAsHeldToMaturity	-8261528	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Mortgage Backed Securities Mbs ProceedsFromMaturitiesPrepaymentsAndCallsOfMortgageBackedSecuritiesMBS	3985667	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Mortgage Backed Securities Mbs ProceedsFromMaturitiesPrepaymentsAndCallsOfMortgageBackedSecuritiesMBS	3246065	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	36733200	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	79072088	USD
	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	29925665	USD
	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	31547522	USD
	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	250000	USD
	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	0	USD
	sfdl	Purchase Of Fhlb Stock PurchaseOfFhlbStock	1900	USD
	sfdl	Purchase Of Fhlb Stock PurchaseOfFhlbStock	6759500	USD
	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	-1393300	USD
	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	-6942000	USD
	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	-4000000	USD
	sfdl	Increase Decrease In Loans Receivable IncreaseDecreaseInLoansReceivable	24910690	USD
	sfdl	Increase Decrease In Loans Receivable IncreaseDecreaseInLoansReceivable	75932370	USD
	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	454332	USD
	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	578994	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1091300	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	882197	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-78082502	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-157630868	USD
	us-gaap	Increase Decrease In Customer Deposits IncreaseDecreaseInCustomerDeposits	98470851	USD
	us-gaap	Increase Decrease In Customer Deposits IncreaseDecreaseInCustomerDeposits	133384506	USD
	us-gaap	Proceeds From Federal Home Loan Bank Advances ProceedsFromFederalHomeLoanBankAdvances	0	USD
	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	13490672	USD
	us-gaap	Proceeds From Federal Home Loan Bank Advances ProceedsFromFederalHomeLoanBankAdvances	226285000	USD
	us-gaap	Payments For Federal Home Loan Bank Advances PaymentsForFederalHomeLoanBankAdvances	25000000	USD
	us-gaap	Payments For Federal Home Loan Bank Advances PaymentsForFederalHomeLoanBankAdvances	229423000	USD
	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	8188288	USD
	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	-132000	USD
	us-gaap	Proceeds From Bank Debt ProceedsFromBankDebt	232140000	USD
	us-gaap	Proceeds From Bank Debt ProceedsFromBankDebt	85950000	USD
	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	-265465000	USD
	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	-69925000	USD
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	0	USD
	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	12968	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	1073452	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	975966	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	52563071	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	153364796	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-4470144	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	3070219	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
CY2021Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	13555265	USD
CY2020Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	15606530	USD
	us-gaap	Interest Paid Net InterestPaidNet	2569016	USD
	us-gaap	Interest Paid Net InterestPaidNet	5231953	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	2995442	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	864401	USD
	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	0	USD
	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	19600	USD
	us-gaap	Debt Conversion Converted Instrument Amount1 DebtConversionConvertedInstrumentAmount1	5912000	USD
	us-gaap	Basis Of Accounting BasisOfAccounting	Basis of PresentationThe accompanying unaudited consolidated financial statements were prepared in accordance with instructions for Form 10-Q and accounting principles generally accepted in the United States of America ("GAAP"); therefore, they do not include all disclosures necessary for a complete presentation of financial condition, results of operations, and cash flows. Such statements are unaudited but, in the opinion of management, reflect all adjustments, which are of a normal recurring nature and necessary for a fair presentation of results for the selected interim periods. Users of financial information produced for interim periods are encouraged to refer to the footnotes contained in the audited consolidated financial statements appearing in Security Federal Corporation’s (the “Company”) 2020 Annual Report to Shareholders which was filed as an exhibit to our Annual Report on Form 10-K for the year ended December 31, 2020 (“2020 10-K”) when reviewing interim financial statements.
CY2021Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	4642470	USD
CY2021Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	3252884	shares
CY2021Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.43
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	904711	USD
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	3252884	shares
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.28
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	10745404	USD
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	3252884	shares
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	3985229	USD
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	3199603	shares
CY2021Q3	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	617131400	USD
	us-gaap	Available For Sale Securities Gross Unrealized Gains AvailableForSaleSecuritiesGrossUnrealizedGains	14604233	USD
	us-gaap	Available For Sale Securities Gross Unrealized Loss AvailableForSaleSecuritiesGrossUnrealizedLoss	3901964	USD
CY2021Q3	us-gaap	Available For Sale Securities AvailableForSaleSecurities	627833669	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
CY2020	us-gaap	Available For Sale Securities Gross Unrealized Loss AvailableForSaleSecuritiesGrossUnrealizedLoss	2269886	USD
CY2020Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	589324401	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	74883	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	70483	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	7092198	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	7092980	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	82618930	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	83552707	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	218310044	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	223501351	USD
CY2021Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	617131400	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	627833669	USD
CY2021Q3	sfdl	Available For Sale Securities Pledged As Collateral Amortized Cost Basis AvailableForSaleSecuritiesPledgedAsCollateralAmortizedCostBasis	299500000	USD
CY2021Q3	us-gaap	Pledged Assets Separately Reported Other Debt Securities Available For Sale Or Held For Investment PledgedAssetsSeparatelyReportedOtherDebtSecuritiesAvailableForSaleOrHeldForInvestment	309000000	USD
CY2020Q4	sfdl	Available For Sale Securities Pledged As Collateral Amortized Cost Basis AvailableForSaleSecuritiesPledgedAsCollateralAmortizedCostBasis	263300000	USD
CY2020Q4	us-gaap	Pledged Assets Separately Reported Other Debt Securities Available For Sale Or Held For Investment PledgedAssetsSeparatelyReportedOtherDebtSecuritiesAvailableForSaleOrHeldForInvestment	274400000	USD
CY2021Q3	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	181459214	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	3016561	USD
CY2021Q3	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	59736921	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	885403	USD
CY2021Q3	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	241196135	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	3901964	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
CY2021Q3	sfdl	Available For Sale Percent Of Unrealized Losses For Securities In Continuous Loss Position12 Months Or Longer AvailableForSalePercentOfUnrealizedLossesForSecuritiesInContinuousLossPosition12MonthsOrLonger	0.227
CY2020Q4	sfdl	Available For Sale Percent Of Unrealized Losses For Securities In Continuous Loss Position12 Months Or Longer AvailableForSalePercentOfUnrealizedLossesForSecuritiesInContinuousLossPosition12MonthsOrLonger	0.370
CY2021Q3	us-gaap	Availableforsale Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions1 AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions1	71	security
CY2020Q4	us-gaap	Availableforsale Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions1 AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions1	88	security
CY2021Q3	us-gaap	Held To Maturity Securities Amortized Cost Before Other Than Temporary Impairment HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment	22420739	USD
	sfdl	Heldtomaturitygrossunrealizedgains Heldtomaturitygrossunrealizedgains	729574	USD
	sfdl	Heldtomaturitygrossunrealizedlosses Heldtomaturitygrossunrealizedlosses	296370	USD
CY2021Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	22853943	USD
CY2020Q4	us-gaap	Held To Maturity Securities Amortized Cost Before Other Than Temporary Impairment HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment	18254394	USD
CY2020Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	4480283	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
CY2021Q3	us-gaap	Pledged Financial Instruments Not Separately Reported Other Debt Securities Held To Maturity PledgedFinancialInstrumentsNotSeparatelyReportedOtherDebtSecuritiesHeldToMaturity	9200000	USD
CY2021Q3	sfdl	Heldtomaturitypledgedascollateralfairvalue Heldtomaturitypledgedascollateralfairvalue	9900000	USD
CY2020Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Other Debt Securities Held To Maturity PledgedFinancialInstrumentsNotSeparatelyReportedOtherDebtSecuritiesHeldToMaturity	13400000	USD
CY2020Q4	sfdl	Heldtomaturitypledgedascollateralfairvalue Heldtomaturitypledgedascollateralfairvalue	14300000	USD
CY2021Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	11574820	USD
CY2021Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	296370	USD
CY2021Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	0	USD
CY2021Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	0	USD
CY2021Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	11574820	USD
CY2021Q3	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	296370	USD
CY2020Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	3692780	USD
CY2020Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	32583	USD
CY2020Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	787503	USD
CY2020Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	539	USD
CY2020Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	33122	USD
CY2021Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	530627188	USD
CY2020Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	500352711	USD
CY2021Q3	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	3589131	USD
CY2020Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	5693400	USD
CY2021Q3	sfdl	Financing Receivable Gross And Loans Receivable Held For Sale Net FinancingReceivableGrossAndLoansReceivableHeldForSaleNet	534216319	USD
CY2020Q4	sfdl	Financing Receivable Gross And Loans Receivable Held For Sale Net FinancingReceivableGrossAndLoansReceivableHeldForSaleNet	506046111	USD
CY2021Q3	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	11172237	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	12842896	USD
CY2021Q3	us-gaap	Loans And Leases Receivable Loans In Process LoansAndLeasesReceivableLoansInProcess	20013219	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Loans In Process LoansAndLeasesReceivableLoansInProcess	12197417	USD
CY2021Q3	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	2430338	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	1838426	USD
CY2021Q3	sfdl	Loans Receivable Allowance Loans In Process And Deferred Loan Fees LoansReceivableAllowanceLoansInProcessAndDeferredLoanFees	33615794	USD
CY2020Q4	sfdl	Loans Receivable Allowance Loans In Process And Deferred Loan Fees LoansReceivableAllowanceLoansInProcessAndDeferredLoanFees	26878739	USD
CY2021Q3	us-gaap	Notes Receivable Net NotesReceivableNet	500600525	USD
CY2021Q3	us-gaap	Notes And Loans Receivable Gross Noncurrent NotesAndLoansReceivableGrossNoncurrent	2460052	USD
CY2020Q4	us-gaap	Notes Receivable Net NotesReceivableNet	479167372	USD
CY2021Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	530627188	USD
CY2020Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	500352711	USD
CY2021Q3	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	528167136	USD
CY2021Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	530627188	USD
CY2020Q4	us-gaap	Notes And Loans Receivable Gross Noncurrent NotesAndLoansReceivableGrossNoncurrent	2417185	USD
CY2020Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	497935526	USD
CY2020Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	500352711	USD
	sfdl	Nonperforming Loans Accrual Status Minimum Consecutive Payments NonperformingLoansAccrualStatusMinimumConsecutivePayments	90
CY2021Q3	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	2933570	USD
CY2021Q3	sfdl	Financing Receivable Recorded Investment Nonaccrual Status Percentage FinancingReceivableRecordedInvestmentNonaccrualStatusPercentage	0.006
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	3125472	USD
CY2020Q4	sfdl	Financing Receivable Recorded Investment Nonaccrual Status Percentage FinancingReceivableRecordedInvestmentNonaccrualStatusPercentage	0.007
	sfdl	Financing Receivable Recorded Investment In Non Accrual Status Increase Decrease FinancingReceivableRecordedInvestmentInNonAccrualStatusIncreaseDecrease	-191902	USD
	sfdl	Financing Receivable Recorded Investment In Non Accrual Status Percent Increase Decrease FinancingReceivableRecordedInvestmentInNonAccrualStatusPercentIncreaseDecrease	-0.061
CY2021Q2	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	11423760	USD
CY2021Q3	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-665000	USD
CY2021Q3	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	45962	USD
CY2021Q3	us-gaap	Allowance For Doubtful Accounts Receivable Recoveries AllowanceForDoubtfulAccountsReceivableRecoveries	459439	USD
CY2021Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	11172237	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	12842896	USD
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	-2270000	USD
	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	110353	USD
	us-gaap	Allowance For Doubtful Accounts Receivable Recoveries AllowanceForDoubtfulAccountsReceivableRecoveries	709694	USD
CY2021Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	11172237	USD
CY2020Q2	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	10676271	USD
CY2020Q3	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	2200000	USD
CY2020Q3	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	65304	USD
CY2020Q3	us-gaap	Allowance For Doubtful Accounts Receivable Recoveries AllowanceForDoubtfulAccountsReceivableRecoveries	34695	USD
CY2020Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	12845662	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	9225574	USD
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	3600000	USD
	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	203345	USD
	us-gaap	Allowance For Doubtful Accounts Receivable Recoveries AllowanceForDoubtfulAccountsReceivableRecoveries	223433	USD
CY2020Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	12845662	USD
CY2021Q3	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	0	USD
CY2021Q3	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	11172237	USD
CY2021Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	11172237	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
CY2021Q3	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	2483766	USD
CY2021Q3	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	528143422	USD
CY2021Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	530627188	USD
CY2020Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	2219330	USD
CY2020Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	498133381	USD
CY2020Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	500352711	USD
	sfdl	Loans And Leases Receivable Valuation Period For New Appraisal LoansAndLeasesReceivableValuationPeriodForNewAppraisal	P24M
CY2021Q3	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	2483766	USD
CY2021Q3	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	3532486	USD
CY2020Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	2219330	USD
CY2020Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	3268049	USD
CY2021Q3	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	2520089	USD
CY2021Q3	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	7383	USD
CY2020Q3	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	3316991	USD
CY2020Q3	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	7788	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	2643566	USD
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	15063	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	3712711	USD
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	54610	USD
CY2021Q3	sfdl	Tdrs Included In Impaired Loans TdrsIncludedInImpairedLoans	707000	USD
CY2020Q4	sfdl	Tdrs Included In Impaired Loans TdrsIncludedInImpairedLoans	315000	USD
	sfdl	Loans And Leases Receivable Valuation Period For New Appraisal LoansAndLeasesReceivableValuationPeriodForNewAppraisal	P24M
CY2021Q3	sfdl	Financing Receivable Modifications Subsequent Default Aggregate Number Of Contracts FinancingReceivableModificationsSubsequentDefaultAggregateNumberOfContracts	0	loan
	sfdl	Days Past Dueto Be Considered In Default DaysPastDuetoBeConsideredInDefault	30
CY2021Q3	sfdl	Nonperforming Loans Accrual Status Minimum Consecutive Payments NonperformingLoansAccrualStatusMinimumConsecutivePayments	6	payments
	sfdl	Investor Funding Period InvestorFundingPeriod	P30D
CY2021Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	0	USD
CY2021Q3	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	13555000	USD
CY2021Q3	sfdl	Certificates Of Deposits With Other Banks Fair Value Disclosure CertificatesOfDepositsWithOtherBanksFairValueDisclosure	100000	USD
CY2021Q3	sfdl	Investment And Mortgage Backed Securities Fair Value Disclosure InvestmentAndMortgageBackedSecuritiesFairValueDisclosure	650688000	USD
CY2021Q3	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	500748000	USD
CY2021Q3	us-gaap	Investment In Federal Home Loan Bank Stock Fair Value Disclosure InvestmentInFederalHomeLoanBankStockFairValueDisclosure	963000	USD
CY2021Q3	sfdl	Checking Savings And Money Market Accounts Fair Value Disclosure CheckingSavingsAndMoneyMarketAccountsFairValueDisclosure	861081000	USD
CY2021Q3	sfdl	Checking Savings And Money Market Accounts Fair Value Disclosure CheckingSavingsAndMoneyMarketAccountsFairValueDisclosure	861081000	USD
CY2021Q3	sfdl	Certificate Accounts Carrying Value CertificateAccountsCarryingValue	155486000	USD
CY2021Q3	sfdl	Certificate Accounts Fair Value Disclosure CertificateAccountsFairValueDisclosure	155831000	USD
CY2021Q3	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	10000000	USD
CY2021Q3	us-gaap	Federal Home Loan Bank Borrowings Fair Value Disclosure FederalHomeLoanBankBorrowingsFairValueDisclosure	10068000	USD
CY2021Q3	us-gaap	Fair Value Liabilities Measured On Recurring Basis Obligations FairValueLiabilitiesMeasuredOnRecurringBasisObligations	26608000	USD
CY2021Q3	us-gaap	Fair Value Liabilities Measured On Recurring Basis Subordinated Debt Obligations FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations	5155000	USD
CY2021Q3	us-gaap	Fair Value Liabilities Measured On Recurring Basis Subordinated Debt Obligations FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations	5155000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	18025000	USD
CY2020Q4	sfdl	Certificates Of Deposits With Other Banks Fair Value Disclosure CertificatesOfDepositsWithOtherBanksFairValueDisclosure	350000	USD
	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	1332666	USD
CY2020Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	35000000	USD
CY2021Q3	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	932340	USD
CY2020Q4	sfdl	Investment And Mortgage Backed Securities Fair Value Disclosure InvestmentAndMortgageBackedSecuritiesFairValueDisclosure	608530000	USD
CY2020Q4	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	481450000	USD
CY2020Q4	us-gaap	Investment In Federal Home Loan Bank Stock Fair Value Disclosure InvestmentInFederalHomeLoanBankStockFairValueDisclosure	2354000	USD
CY2020Q4	sfdl	Checking Savings And Money Market Accounts Fair Value Disclosure CheckingSavingsAndMoneyMarketAccountsFairValueDisclosure	737571000	USD
CY2020Q4	sfdl	Checking Savings And Money Market Accounts Fair Value Disclosure CheckingSavingsAndMoneyMarketAccountsFairValueDisclosure	737571000	USD
CY2020Q4	sfdl	Certificate Accounts Carrying Value CertificateAccountsCarryingValue	180525000	USD
CY2020Q4	sfdl	Certificate Accounts Fair Value Disclosure CertificateAccountsFairValueDisclosure	181487000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Borrowings Fair Value Disclosure FederalHomeLoanBankBorrowingsFairValueDisclosure	35200000	USD
CY2020Q4	us-gaap	Fair Value Liabilities Measured On Recurring Basis Obligations FairValueLiabilitiesMeasuredOnRecurringBasisObligations	13117000	USD
CY2020Q4	us-gaap	Fair Value Liabilities Measured On Recurring Basis Subordinated Debt Obligations FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations	5155000	USD
CY2020Q4	us-gaap	Fair Value Liabilities Measured On Recurring Basis Subordinated Debt Obligations FairValueLiabilitiesMeasuredOnRecurringBasisSubordinatedDebtObligations	5155000	USD
CY2021Q3	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	0	USD
CY2020Q3	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	139346	USD
	us-gaap	Gain On Sale Of Investments GainOnSaleOfInvestments	0	USD
CY2020Q3	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	1184818	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	3022755	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	2494084	USD
CY2021Q3	sfdl	Service Feeson Deposit Accounts ServiceFeesonDepositAccounts	251440	USD
CY2020Q3	sfdl	Service Feeson Deposit Accounts ServiceFeesonDepositAccounts	222085	USD
	sfdl	Service Feeson Deposit Accounts ServiceFeesonDepositAccounts	702548	USD
	sfdl	Service Feeson Deposit Accounts ServiceFeesonDepositAccounts	695561	USD
CY2021Q3	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	187657	USD
CY2020Q3	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	202007	USD
	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	468083	USD
	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	513783	USD
CY2021Q3	sfdl	Trust Income TrustIncome	359035	USD
CY2020Q3	sfdl	Trust Income TrustIncome	243990	USD
	sfdl	Trust Income TrustIncome	1005517	USD
	sfdl	Trust Income TrustIncome	782210	USD
CY2021Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	155000	USD
CY2020Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	138250	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	485000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	408250	USD
CY2021Q3	sfdl	Checkcardrevenue Checkcardrevenue	615568	USD
CY2020Q3	sfdl	Checkcardrevenue Checkcardrevenue	499176	USD
	sfdl	Checkcardrevenue Checkcardrevenue	1811216	USD
	sfdl	Checkcardrevenue Checkcardrevenue	1416946	USD
CY2021Q3	sfdl	Grant Revenue GrantRevenue	1826265	USD
CY2020Q3	sfdl	Grant Revenue GrantRevenue	171310	USD
	sfdl	Grant Revenue GrantRevenue	1826265	USD
	sfdl	Grant Revenue GrantRevenue	316814	USD
CY2021Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	202314	USD
CY2020Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	187269	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	669379	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	629814	USD
CY2021Q3	us-gaap	Noninterest Income NoninterestIncome	4529619	USD
CY2020Q3	us-gaap	Noninterest Income NoninterestIncome	2988251	USD
	us-gaap	Noninterest Income NoninterestIncome	9990763	USD
	us-gaap	Noninterest Income NoninterestIncome	8590128	USD

Files In Submission

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0000939057-21-000339-index.html	Edgar Link	pending
0000939057-21-000339.txt	Edgar Link	pending
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sfdl-20210930.htm	Edgar Link	pending
sfdl-20210930.xsd	Edgar Link	pending
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sfdl-20210930xex312.htm	Edgar Link	pending
sfdl-20210930xex32.htm	Edgar Link	pending
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sfdl-20210930_htm.xml	Edgar Link	completed
sfdl-20210930_lab.xml	Edgar Link	unprocessable
sfdl-20210930_pre.xml	Edgar Link	unprocessable
Show.js	Edgar Link	pending

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$SFDL
SECURITY FEDERAL CORP Stock $sfdl

2021 Q3 Form 10-Q Financial Statement

#000093905721000339 Filed on November 15, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SFDL SECURITY FEDERAL CORP Stock $sfdl

2021 Q3 Form 10-Q Financial Statement

#000093905721000339 Filed on November 15, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SFDL
SECURITY FEDERAL CORP Stock $sfdl