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Note 8 - Income (Loss) Per Common Share (Tables)
 9 Months Ended
Oct. 02, 2016
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
 
 
Three Months Ended
 
 
Nine
Months Ended
 
 
 
October 2
,
 
 
October 4
,
 
 
October 2
,
 
 
October 4
,
 
 
 
201
6
 
 
201
5
 
 
201
6
 
 
201
5
 
 
 
(Unaudited)
 
 
(Unaudited)
 
                                 
Income (loss) attributable to stockholders:
                                
Net income (loss) as reported
   $ 20,993     $ (274
)
   $ 10,691     $ (21,723
)
Less distributed and undistributed earnings allocable to restricted award holders
     (737
)
     0       (331
)
     0  
Net income (loss) allocable to common stockholders
   $ 20,256     $ (274
)
   $ 10,360     $ (21,723
)
Income (loss) per common share attributable to stockholders:
                                
Basic
   $ 1.02     $ (0.01
)
   $ 0.52     $ (1.10
)
Diluted
   $ 1.02     $ (0.01
)
   $ 0.52     $ (1.10
)
Weighted average shares outstanding – basic
     19,834       19,654       19,761       19,684  
Weighted average additional shares assuming conversion of potential common shares
     0       0       0       0  
Weighted average shares outstanding – diluted
     19,834       19,654       19,761       19,684