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Note 15 - Guarantees, Commitments and Contingencies (Tables)
6 Months Ended
Jun. 30, 2019
Notes Tables  
Schedule of Fair Value, Off-balance Sheet Risks [Table Text Block]
   
June
30
,
2019
   
December
31,
2018
 
   
(Dollars in Thousands)
 
Standby letters of credit
  $
180
    $
180
 
Standby performance letters of credit    
652
     
704
 
Commitments to extend credit
  $
102,789
    $
85,972