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Note 20 - Guarantees, Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2016
Notes Tables  
Schedule of Fair Value, Off-balance Sheet Risks [Table Text Block]
   
December 31,
 
   
2016
   
2015
 
   
(Dollars in Thousands)
 
Standby letters of credit
  $
183
    $
683
 
Commitments to extend credit
  $
41,267
    $
61,427