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Note 2 - Earnings Per Share and Share Repurchase Plan (Tables)
12 Months Ended
Dec. 31, 2014
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
                 

Year ended December 31,

 

2014

   

2013

 

Numerator for basic and diluted earnings per share - net income

  $ 8,998     $ 8,392  

Denominator for basic earnings per share - weighted average shares outstanding

    3,291,939       3,248,397  

Effect of dilutive securities - employee stock options

    10,635       11,678  

Denominator for diluted earnings per share - adjusted weighted average shares outstanding

    3,302,574       3,260,075  

Earnings per share - basic

  $ 2.73     $ 2.58  

Earnings per share - diluted

  $ 2.72     $ 2.57