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Note 6 - Stockholders' Equity (Tables)
3 Months Ended
Apr. 01, 2017
Notes Tables  
Schedule of Stockholders Equity [Table Text Block]
   
Thirteen weeks ended
 
   
April 1, 2017
   
April 2, 2016
 
                 
                 
Beginning balance
  $
99,112
    $
99,414
 
Stock-based compensation
   
1,016
     
671
 
Shares issued under employee stock plans
   
(358
)    
(411
)
Adoption of new accounting standards
   
822
     
-
 
Share repurchase and retirement
   
-
     
(1,469
)
Other comprehensive income (loss)
   
222
     
(643
)
Net income
   
2,765
     
3,518
 
Ending balance
  $
103,579
    $
101,080