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Note 8 - Other Real Estate Owned (Tables)
 12 Months Ended
Dec. 31, 2015
Disclosure Text Block [Abstract]  
Other Real Estate, Roll Forward [Table Text Block]
   

Year Ended December 31,

  

(dollars in thousands)

  

2015

    

2014

  
                 

Balance beginning of period

   $ 13,224     $ 9,225  

Real estate acquired from borrowers

     1,725       5,310  

Valuation allowance

     (1,100 )     (554 )

Properties sold

     (7,997 )     (757 )

Balance end of period

   $ 5,852     $ 13,224