Regulatory Matters (Regulatory capital amounts and ratios) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Tier 1 Risk-Based Core Capital (To Risk Weighted Assets)
Actual, Amount	$ 71,818	$ 70,598
Actual, Ratio	18.40%	17.80%
For Capital Adequacy, Amount	15,628	15,894
For Capital Adequacy, Ratio	4.00%	4.00%
Total Risk-Based Capital (To Risk Weighted Assets)
Actual, Amount	85,337	84,529
Actual, Ratio	21.80%	21.30%
For Capital Adequacy, Amount	31,255	31,788
For Capital Adequacy, Ratio	8.00%	8.00%
Tier 1 Leverage (Core) Capital (To Adjusted Tangible Assets)
Actual, Amount	71,818	70,598
Actual, Ratio	8.50%	8.30%
For Capital Adequacy, Amount	33,822	34,079
For Capital Adequacy, Ratio	4.00%	4.00%
Security Federal Bank [Member]
Tier 1 Risk-Based Core Capital (To Risk Weighted Assets)
Actual, Amount	82,352	81,624
Actual, Ratio	21.10%	20.60%
For Capital Adequacy, Amount	15,617	15,883
For Capital Adequacy, Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	23,426	23,825
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	6.00%	6.00%
Total Risk-Based Capital (To Risk Weighted Assets)
Actual, Amount	87,294	86,652
Actual, Ratio	22.40%	21.80%
For Capital Adequacy, Amount	31,234	31,767
For Capital Adequacy, Ratio	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	39,043	39,709
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	10.00%	10.00%
Tier 1 Leverage (Core) Capital (To Adjusted Tangible Assets)
Actual, Amount	82,352	81,624
Actual, Ratio	9.80%	9.60%
For Capital Adequacy, Amount	33,612	34,069
For Capital Adequacy, Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 42,015	$ 42,586
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	5.00%	5.00%