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Note 23 - Pending Acquisition (Details) - Guaranty Federal Bancshares, Inc - Pending Acquisition - USD ($)
$ / shares in Units, $ in Millions
Nov. 09, 2021
Dec. 31, 2021
Nov. 05, 2021
Business Acquisition [Line Items]      
Total assets acquired   $ 1,200.0  
Business acquisition loan acquired   815.0  
Deposits assumed in business combination   $ 1,000.0  
Business combination consideration in cash (per share) $ 30.50    
Business acquisition, equity interest issued or issuable, number of shares 0.58775    
Business combination mixed consideration in cash (per share) $ 6.10    
Business combination shares issuable mixed consideration 0.4702    
Business acquisition, share price     $ 59.99
Business combination consideration in stock percentage 80.00%    
Business combination consideration as a percentage of cash 20.00%    
Business Combination, Consideration Transferred $ 151.6