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Note 16 - Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2019
Notes Tables  
Summary Of Financial Instrument Outstanding [Table Text Block]
   
Contract Amount
 
   
2019
   
2018
 
(dollars in thousands)                
Commitments to extend credit
  $
102,890
    $
98,736
 
Standby letters of credit
   
1,576
     
1,525