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Note 15 - Commitments (Tables)
12 Months Ended
Dec. 31, 2018
Notes Tables  
Other Commitments [Table Text Block]
(Dollar amounts in thousands)
 
2018
   
2017
 
                 
Commitments to extend credit
  $
228,427
    $
234,023
 
Standby letters of credit
   
1,656
     
1,015
 
                 
Total
  $
230,083
    $
235,038
 
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
2019
  $
663
 
2020
   
659
 
2021
   
660
 
2022
   
655
 
2023
   
655
 
Thereafter
   
1,976
 
Total   $
5,268