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Note 4 - Stock-based Compensation (Tables)
3 Months Ended
Apr. 02, 2016
Notes Tables  
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
 
 
Options
 
 
 
Shares
 
 
Weighted
Average
Exercise
Price
 
Outstanding, January 2, 2016
    574,851     $ 8.30  
Granted
    211,995       13.69  
Exercised
    9,788       5.91  
Forfeited
           
Canceled or expired
           
Outstanding, April 2, 2016
    777,058     $ 9.80  
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]
 
 
Restricted Stock
 
 
Performance Shares
 
 
 
Shares
 
 
Weighted
Average Grant
Date Fair Value
 
 
Shares
 
 
Weighted
Average Grant
Date Fair Value
 
Outstanding, January 2, 2016
    276,553     $ 11.93       84,062     $ 20.70  
Granted
    157,160       13.47       175,945       13.69  
Vested
    89,748       10.67       7,039       20.56  
Forfeited
                       
Canceled or expired
                12,493       20.56  
Outstanding, April 2, 2016
    343,965     $ 12.97       240,475     $ 15.58