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Note 8 - Other Real Estate Owned (Tables)
 12 Months Ended
Dec. 31, 2016
Notes Tables  
Other Real Estate, Roll Forward [Table Text Block]
 
  
Year Ended December 31,
 
(dollars in thousands)
  
2016
    
2015
  
                 
Balance beginning of period
   $
5,852
    $
13,224
 
Real estate acquired from borrowers
    
2,500
     
1,725
 
Valuation allowance
    
(200
 )    
(1,100
 )
Properties sold
    
(5,458
 )    
(7,997
 )
Balance end of period
   $
2,694
    $
5,852