Annual report pursuant to Section 13 and 15(d)

Note 1 - Summary of Significant Accounting Policies (Details Textual)

v3.24.0.1
Note 1 - Summary of Significant Accounting Policies (Details Textual)
12 Months Ended
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss $ 982,664,000 $ 1,034,121,000 [1]  
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Ending Balance     $ 0
Goodwill, Ending Balance $ 13,615,000 13,615,000  
Number of Reporting Units 1    
Advertising Expense $ 768,000 $ 447,000 $ 499,000
Metro Bancshares, Inc [Member]      
Goodwill, Ending Balance $ 13,600,000    
Minimum [Member]      
Property, Plant and Equipment, Useful Life (Year) 3 years    
Lessee, Operating Lease, Renewal Term (Year) 1 year    
Minimum [Member] | Performance Shares [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Shares Vested Upon Certain Performance Metrics, Percentage 0.00%    
Maximum [Member]      
Property, Plant and Equipment, Useful Life (Year) 39 years 6 months    
Lessee, Operating Lease, Renewal Term (Year) 5 years    
Maximum [Member] | Performance Shares [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Shares Vested Upon Certain Performance Metrics, Percentage 150.00%    
[1] derived from audited financial statements.