Regulatory Matters (Regulatory capital amounts and ratios) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Tier 1 Risk-Based Core Capital (To Risk Weighted Assets)
Actual, Amount	$ 75,436	$ 70,598
Actual, Ratio	19.80%	17.80%
For Capital Adequacy, Amount	15,211	15,894
For Capital Adequacy, Ratio	4.00%	4.00%
Total Risk-Based Capital (To Risk Weighted Assets)
Actual, Amount	87,978	84,529
Actual, Ratio	23.10%	21.30%
For Capital Adequacy, Amount	30,422	31,788
For Capital Adequacy, Ratio	8.00%	8.00%
Tier 1 Leverage (Core) Capital (To Adjusted Tangible Assets)
Actual, Amount	75,436	70,598
Actual, Ratio	9.20%	8.30%
For Capital Adequacy, Amount	32,977	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	84,807	81,624
Actual, Ratio	22.30%	20.60%
For Capital Adequacy, Amount	15,200	15,883
For Capital Adequacy, Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	22,800	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	89,605	86,652
Actual, Ratio	23.60%	21.80%
For Capital Adequacy, Amount	30,400	31,767
For Capital Adequacy, Ratio	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	37,999	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	84,807	81,624
Actual, Ratio	10.30%	9.60%
For Capital Adequacy, Amount	32,967	34,069
For Capital Adequacy, Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 41,209	$ 42,586
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	5.00%	5.00%