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Note 14 - Guarantees, Commitments and Contingencies (Tables)
3 Months Ended
Mar. 31, 2018
Notes Tables  
Schedule of Fair Value, Off-balance Sheet Risks [Table Text Block]
   
March
3
1
,
201
8
   
December
31,
201
7
 
   
(Dollars in Thousands)
 
Standby letters of credit
  $
180
    $
180
 
Commitments to extend credit
  $
54,250
    $
55,801