Note 11 - Subordinated Debentures	6 Months Ended
Jun. 30, 2023
Notes to Financial Statements
Subordinated Borrowings Disclosure [Text Block]	NOTE 11 - SUBORDINATED DEBENTURES Junior Subordinated Debentures In September 2006, Security Federal Statutory Trust (the "Trust"), issued and sold fixed and floating rate capital securities of the Trust (the “Capital Securities”). The Trust used the net proceeds from the sale of the Capital Securities to purchase a like amount of junior subordinated debentures (the “Debentures”) of the Company which are reported on the Consolidated Balance Sheets as junior subordinated debentures. The Capital Securities accrue and pay distributions at a floating rate of three month LIBOR plus 170 basis points annually which was equal to 7.25% at June 30, 2023 compared to 6.47% at December 31, 2022. The distribution rate payable on the Capital Securities is cumulative and payable quarterly in arrears. The Capital Securities mature or are mandatorily redeemable upon maturity on December 15, 2036, or upon earlier optional redemption as provided in the indenture. The Company has had the right to redeem the Capital Securities in whole or in part since September 15, 2011. As of a result of the discontinuation of LIBOR, effective June 30, 2023, the Capital Securities transitioned from its floating rate of three month LIBOR plus 170 basis points to a replacement rate of three month Secured Overnight Financing Rate ("SOFR") as adjusted by the relevant spread adjustment of 0.26161. Subordinated Debentures In November 2019, the Company sold and issued to certain institutional investors $17.5 million in aggregate principal amount of 5.25% fixed-to-floating rate subordinated notes due 2029 (the “10-Year Notes”) and $12.5 million in aggregate principal amount of 5.25% fixed-to-floating rate subordinated notes due 2034 (the “15-Year Notes”, and together with the 10-Year Notes, the “Notes”). The 10-Year Notes have a stated maturity of November 22, 2029, and bear interest at a fixed rate of 5.25% per year, from and including November 22, 2019 but excluding November 22, 2024. From and including November 22, 2024 to but excluding the maturity date or early redemption date, the interest rate shall reset semi-annually to an interest rate equal to the then-current three-month LIBOR rate plus 369 basis points. The 15-Year Notes have a stated maturity of November 22, 2034, and bear interest at a fixed rate of 5.25% per year, from and including November 22, 2019 but excluding November 22, 2029. From and including November 22, 2029 to but excluding the maturity date or early redemption date, the interest rate for the 15-Year Notes shall reset semi-annually to an interest rate equal to the then-current three-month LIBOR rate plus 357 basis points. The Notes are payable semi-annually in arrears on June 1 and December 1 of each year commencing June 1, 2020. Both the 10-Year and 15-Note Year subordinated notes include remedies in the event that LIBOR is discontinued. The Company is currently determining an appropriate benchmark replacement for LIBOR. The Company expects the replacement benchmark to be materially consistent with the three-month LIBOR. The Notes are not subject to redemption at the option of the holder and may be redeemed by the Company only under certain limited circumstances prior to November 22, 2024, with respect to the 10-Year Notes, and November 22, 2029, with respect to the 15-Year Notes. The Company may redeem the 10-Year Notes and the 15-Year Notes at its option, in whole at any time, or in part from time to time, after November 22, 2024 and November 22, 2029, respectively. The Notes are unsecured, subordinated obligations of the Company and rank junior in right to payment to the Company’s current and future senior indebtedness, and each Note is equal in right to payment with respect to the other Notes. The Notes have been structured to qualify as Tier 2 capital for the Company under applicable regulatory guidelines. The Company used the net proceeds from the sale of the Notes to fund the redemption of the convertible senior debentures and for general corporate purposes to support future growth. During the year ended December 31, 2022 the Company repurchased $1.0 million in principal of the 10-Year Notes and $2.5 million in principal of the 15-Year Notes, leaving an aggregate remaining principal balance of $16.5 million and $10.0 million, respectively.

Note 11 - Subordinated Debentures

6 Months Ended

Jun. 30, 2023

Subordinated Borrowings Disclosure [Text Block]

NOTE 11 - SUBORDINATED DEBENTURES

Junior Subordinated Debentures

In September 2006, Security Federal Statutory Trust (the "Trust"), issued and sold fixed and floating rate capital securities of the Trust (the “Capital Securities”). The Trust used the net proceeds from the sale of the Capital Securities to purchase a like amount of junior subordinated debentures (the “Debentures”) of the Company which are reported on the Consolidated Balance Sheets as junior subordinated debentures. The Capital Securities accrue and pay distributions at a floating rate of three month LIBOR plus 170 basis points annually which was equal to 7.25% at June 30, 2023 compared to 6.47% at December 31, 2022. The distribution rate payable on the Capital Securities is cumulative and payable quarterly in arrears. The Capital Securities mature or are mandatorily redeemable upon maturity on December 15, 2036, or upon earlier optional redemption as provided in the indenture. The Company has had the right to redeem the Capital Securities in whole or in part since September 15, 2011.

As of a result of the discontinuation of LIBOR, effective June 30, 2023, the Capital Securities transitioned from its floating rate of three month LIBOR plus 170 basis points to a replacement rate of three month Secured Overnight Financing Rate ("SOFR") as adjusted by the relevant spread adjustment of 0.26161.

Subordinated Debentures

In November 2019, the Company sold and issued to certain institutional investors $17.5 million in aggregate principal amount of 5.25% fixed-to-floating rate subordinated notes due 2029 (the “10-Year Notes”) and $12.5 million in aggregate principal amount of 5.25% fixed-to-floating rate subordinated notes due 2034 (the “15-Year Notes”, and together with the 10-Year Notes, the “Notes”).

The 10-Year Notes have a stated maturity of November 22, 2029, and bear interest at a fixed rate of 5.25% per year, from and including November 22, 2019 but excluding November 22, 2024. From and including November 22, 2024 to but excluding the maturity date or early redemption date, the interest rate shall reset semi-annually to an interest rate equal to the then-current three-month LIBOR rate plus 369 basis points.

The 15-Year Notes have a stated maturity of November 22, 2034, and bear interest at a fixed rate of 5.25% per year, from and including November 22, 2019 but excluding November 22, 2029. From and including November 22, 2029 to but excluding the maturity date or early redemption date, the interest rate for the 15-Year Notes shall reset semi-annually to an interest rate equal to the then-current three-month LIBOR rate plus 357 basis points. The Notes are payable semi-annually in arrears on June 1 and December 1 of each year commencing June 1, 2020.

Both the 10-Year and 15-Note Year subordinated notes include remedies in the event that LIBOR is discontinued. The Company is currently determining an appropriate benchmark replacement for LIBOR. The Company expects the replacement benchmark to be materially consistent with the three-month LIBOR.

The Notes are not subject to redemption at the option of the holder and may be redeemed by the Company only under certain limited circumstances prior to November 22, 2024, with respect to the 10-Year Notes, and November 22, 2029, with respect to the 15-Year Notes. The Company may redeem the 10-Year Notes and the 15-Year Notes at its option, in whole at any time, or in part from time to time, after November 22, 2024 and November 22, 2029, respectively. The Notes are unsecured, subordinated obligations of the Company and rank junior in right to payment to the Company’s current and future senior indebtedness, and each Note is equal in right to payment with respect to the other Notes.

The Notes have been structured to qualify as Tier 2 capital for the Company under applicable regulatory guidelines. The Company used the net proceeds from the sale of the Notes to fund the redemption of the convertible senior debentures and for general corporate purposes to support future growth.

During the year ended December 31, 2022 the Company repurchased $1.0 million in principal of the 10-Year Notes and $2.5 million in principal of the 15-Year Notes, leaving an aggregate remaining principal balance of $16.5 million and $10.0 million, respectively.