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Note 7 - Capital Requirements (Tables)
9 Months Ended
Sep. 30, 2020
Notes Tables  
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]
  

Actual

  Minimum Capital Requirement  Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions 
  

Amount

  

Ratio

  

Amount

  

Ratio

  

Amount

  

Ratio

 

September 30, 2020

                        
Total Capital (to Risk-Weighted Assets) $89,155   15.34% $46,500   8.00% $58,125   10.00%
Tier 1 Capital (to Risk-Weighted Assets) $81,883   14.09% $34,875   6.00% $46,500   8.00%
Common Equity Tier 1 Capital (to Risk-Weighted Assets) $81,883   14.09% $26,156   4.50% $37,782   6.50%
Tier 1 Capital (to Average Assets) $81,883   8.67% $37,776   4.00% $47,220   5.00%

December 31, 2019

                        

Total Capital (to Risk-Weighted Assets)

 $85,439   14.84% $46,046   8.00% $57,557   10.00%

Tier 1 Capital (to Risk-Weighted Assets)

 $80,505   13.99% $34,534   6.00% $46,046   8.00%

Common Equity Tier 1 Capital (to Risk-Weighted Assets)

 $80,505   13.99% $25,901   4.50% $37,412   6.50%

Tier 1 Capital (to Average Assets)

 $80,505   10.13% $31,799   4.00% $39,749   5.00%