Note 14 - Subsequent Event	3 Months Ended
Mar. 31, 2021
Notes to Financial Statements
Subsequent Events [Text Block]	*Note 14:* Subsequent Event** 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; and 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 will be redeemed as of May 23, 2021. Proceeds from a 2020 subordinated debt offering and a cash dividend from the Bank will be used to redeem the 2005 debt securities. The Company received all necessary regulatory approvals prior to the redemption of these instruments.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

Name:	us-gaap_SubsequentEventsTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration