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Note 7 - Net Income Per Common Share (Tables)
9 Months Ended
Sep. 28, 2014
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   

Third Quarter Ended

   

Nine Months Ended

 
   

Sept. 28,

   

Sept. 29,

   

Sept. 28,

   

Sept. 29,

 

(thousands except per share data)

    2014       2013       2014       2013  

Net income for basic and diluted per share calculation

  $ 7,254     $ 5,452     $ 23,381     $ 19,028  

Weighted average common shares outstanding - basic

    10,657       10,655       10,689       10,759  

Effect of potentially dilutive securities

    63       42       55       41  

Weighted average common shares outstanding - diluted

    10,720       10,697       10,744       10,800  

Basic net income per common share

  $ 0.68     $ 0.51     $ 2.19     $ 1.77  

Diluted net income per common share

  $ 0.68     $ 0.51     $ 2.18     $ 1.76