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Note 4 - Goodwill and Intangible Assets (Tables)
 6 Months Ended
Jun. 30, 2017
Notes Tables  
Schedule of Valuation Allowance for Impairment of Recognized Servicing Assets [Table Text Block]
 
 
For the six months
 
 
 
ended June 30,
 
(in thousands)
 
2017
 
 
2016
 
Balance at beginning of period
   $
921
    $
1,018
 
Additions for mortgage loans sold
    
93
     
70
 
Amortization
    
(145
 )    
(118
 )
Balance at end of period
   $
869
    $
970