Note 7 - Subordinated Debentures Issued to Capital Trusts	6 Months Ended
Jun. 30, 2021
Subordinated Debentures Issued to Capital Trusts [Member]
Notes to Financial Statements
Subordinated Borrowings Disclosure [Text Block]	Note 7: Subordinated Debentures Issued to Capital Trusts During 2005, the Company formed two wholly owned grantor trust subsidiaries, Guaranty Statutory Trust I and Guaranty Statutory Trust II, to issue preferred securities representing undivided beneficial interests in the assets of the trusts and to invest the gross proceeds of the preferred securities in notes of the Company. Trust I issued $5,000,000 of preferred securities and Trust II issued $10,000,000 of preferred securities. The sole assets of Trust I were originally $5,155,000 aggregate principal amount of the Company’s fixed rate subordinated debenture notes due 2036, which were redeemable beginning in 2011. The sole assets of Trust II were originally $10,310,000 aggregate principal amount of the Company’s fixed/variable rate subordinated debenture notes due 2036, which were redeemable beginning in 2011. Trust II subordinated debenture notes bear interest at a fixed rate for five years and thereafter at a floating rate based on LIBOR. The preferred securities qualify as either Tier I or Tier II capital for regulatory purposes, subject to certain limitations. On April 8, 2021, the Company notified investors of its $5,155,000 aggregate principal amount of 6.92% Fixed Rate Junior Subordinated Debt Securities due 2036 (the “Debt Securities”) issued by a statutory trust subsidiary, Guaranty Statutory Trust I of its intent to fully redeem the issuance as allowed per Debt Securities agreements from its inception in 2005. All outstanding principal amounts, plus accrued and unpaid distributions were redeemed on May 23, 2021. The Company received all necessary regulatory approvals prior to the redemption of these instruments.

Note 7 - Subordinated Debentures Issued to Capital Trusts

6 Months Ended

Jun. 30, 2021

Subordinated Debentures Issued to Capital Trusts [Member]

Subordinated Borrowings Disclosure [Text Block]

Note 7: Subordinated Debentures Issued to Capital Trusts

During 2005, the Company formed two wholly owned grantor trust subsidiaries, Guaranty Statutory Trust I and Guaranty Statutory Trust II, to issue preferred securities representing undivided beneficial interests in the assets of the trusts and to invest the gross proceeds of the preferred securities in notes of the Company. Trust I issued $5,000,000 of preferred securities and Trust II issued $10,000,000 of preferred securities. The sole assets of Trust I were originally $5,155,000 aggregate principal amount of the Company’s fixed rate subordinated debenture notes due 2036, which were redeemable beginning in 2011. The sole assets of Trust II were originally $10,310,000 aggregate principal amount of the Company’s fixed/variable rate subordinated debenture notes due 2036, which were redeemable beginning in 2011. Trust II subordinated debenture notes bear interest at a fixed rate for five years and thereafter at a floating rate based on LIBOR. The preferred securities qualify as either Tier I or Tier II capital for regulatory purposes, subject to certain limitations.

On April 8, 2021, the Company notified investors of its $5,155,000 aggregate principal amount of 6.92% Fixed Rate Junior Subordinated Debt Securities due 2036 (the “Debt Securities”) issued by a statutory trust subsidiary, Guaranty Statutory Trust I of its intent to fully redeem the issuance as allowed per Debt Securities agreements from its inception in 2005. All outstanding principal amounts, plus accrued and unpaid distributions were redeemed on May 23, 2021. The Company received all necessary regulatory approvals prior to the redemption of these instruments.