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Inventories (Tables)
 12 Months Ended
Dec. 31, 2016
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]
Inventories consisted of the following (in thousands):
 
December 31,
2016
 
January 2,
2016
Raw materials
$
7,973

 
$
9,349

Work in progress
72

 
48

Finished goods
66,981

 
77,203

 
$
75,026

 
$
86,600