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Note 2- Stock-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2015
Disclosure Text Block Supplement [Abstract]  
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
           

Weighted-

           

Weighted-

 
           

average

           

average

 
           

Exercise

           

Exercise

 
   

2015

   

Price

   

2014

   

Price

 
                                 

Outstanding, January 1

    46,451     $ 27.90       58,581     $ 28.38  

Expired

    (3,639 )     37.33       (907 )     27.35  

Exercised

    (525 )     17.55       -       -  
                                 

Outstanding, June 30

    42,287     $ 27.19       57,674     $ 28.40  
                                 

Exercisable, June 30

    42,287     $ 27.19       57,674     $ 28.40