Regulatory Matters (Tables)

3 Months Ended

Mar. 31, 2017

Banking and Thrift [Abstract]

Regulatory capital amounts and ratios

	March 31, 2017
	Actual				For Capital Adequacy				To Be Well Capitalized Under Prompt Corrective Action Provisions
	Amount		Ratio		Amount		Ratio		Amount		Ratio
	(Dollars in Thousands)
SECURITY FEDERAL CORP.
Tier 1 Risk-Based Core Capital (To Risk Weighted Assets)	$	75,120	16.8	%	$	26,883	6.0	%	N/A		N/A
Total Risk-Based Capital (To Risk Weighted Assets)	80,753		18.0	%	35,844		8.0	%	N/A		N/A
Common Equity Tier 1 Capital (To Risk Weighted Assets)	70,120		15.7	%	20,162		4.5	%	N/A		N/A
Tier 1 Leverage (Core) Capital (To Adjusted Tangible Assets)	75,120		9.2	%	32,804		4.0	%	N/A		N/A
SECURITY FEDERAL BANK
Tier 1 Risk-Based Core Capital (To Risk Weighted Assets)	$	88,270	19.7	%	$	26,873	6.0	%	$	35,830	8.0	%
Total Risk-Based Capital (To Risk Weighted Assets)	93,903		21.0	%	35,830		8.0	%	44,788		10.0	%
Common Equity Tier 1 Capital (To Risk Weighted Assets)	88,270		19.7	%	20,154		4.5	%	29,112		6.5	%
Tier 1 Leverage (Core) Capital (To Adjusted Tangible Assets)	88,270		10.8	%	32,797		4.0	%	40,997		5.0	%

	December 31, 2016
	Actual				For Capital Adequacy				To Be Well Capitalized Under Prompt Corrective Action Provisions
	Amount		Ratio		Amount		Ratio		Amount		Ratio
	(Dollars in Thousands)
SECURITY FEDERAL CORP.
Tier 1 Risk-Based Core Capital (To Risk Weighted Assets)	$	73,787	16.6	%	$	26,714	6.0	%	N/A		N/A
Total Risk-Based Capital (To Risk Weighted Assets)	79,383		17.8	%	35,618		8.0	%	N/A		N/A
Common Equity Tier 1 Capital (To Risk Weighted Assets)	68,787		15.4	%	20,035		4.5	%	N/A		N/A
Tier 1 Leverage (Core) Capital (To Adjusted Tangible Assets)	73,787		9.1	%	32,548		4.0	%	N/A		N/A
SECURITY FEDERAL BANK
Tier 1 Risk-Based Core Capital (To Risk Weighted Assets)	$	88,139	19.8	%	$	26,694	6.0	%	$	35,592	8.0	%
Total Risk-Based Capital (To Risk Weighted Assets)	93,735		21.1	%	35,592		8.0	%	44,490		10.0	%
Common Equity Tier 1 Capital (To Risk Weighted Assets)	88,139		19.8	%	20,021		4.5	%	28,919		6.5	%
Tier 1 Leverage (Core) Capital (To Adjusted Tangible Assets)	88,139		10.8	%	32,587		4.0	%	40,734		5.0	%