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Note 15 - Regulatory Capital Matters (Tables)
9 Months Ended
Sep. 30, 2025
Notes Tables  
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]
                  

To be Well Capitalized

 
          

Requirement For Capital

  

Under Prompt Corrective

 
  

Actual

  

Adequacy Purposes:

  

Action Provisions:

 
  

Amount

  

Ratio

  

Amount

  

Ratio

  

Amount

  

Ratio

 

September 30, 2025

                        

Common equity tier 1 capital ratio

                        

Consolidated

 $439,168   11.62% $170,014   4.5%  N/A   N/A 

Bank

  475,456   12.64%  169,313   4.5%  244,563   6.5%

Total risk based capital ratio

                        

Consolidated

  569,913   15.08%  302,247   8.0%  N/A   N/A 

Bank

  516,200   13.72%  301,001   8.0%  376,251   10.0%

Tier 1 risk based capital ratio

                        

Consolidated

  457,168   12.10%  226,685   6.0%  N/A   N/A 

Bank

  475,456   12.64%  225,750   6.0%  301,001   8.0%

Tier 1 leverage ratio

                        

Consolidated

  457,168   8.75%  208,983   4.0%  N/A   N/A 

Bank

  475,456   9.12%  208,428   4.0%  260,535   5.0%
                         

December 31, 2024

                        

Common equity tier 1 capital ratio

                        

Consolidated

 $415,825   11.14% $167,991   4.5%  N/A   N/A 

Bank

  442,747   11.88%  167,712   4.5% $242,251   6.5%

Total risk based capital ratio

                        

Consolidated

  543,250   14.55%  298,651   8.0%  N/A   N/A 

Bank

  480,173   12.88%  298,155   8.0%  372,694   10.0%

Tier 1 risk based capital ratio

                        

Consolidated

  433,825   11.62%  223,988   6.0%  N/A   N/A 

Bank

  442,747   11.88%  223,616   6.0%  298,155   8.0%

Tier 1 leverage ratio

                        

Consolidated

  433,825   8.36%  207,544   4.0%  N/A   N/A 

Bank

  442,747   8.55%  207,066   4.0%  258,832   5.0%