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Inventories, Net (Tables)
 12 Months Ended
Dec. 30, 2016
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]
Inventories, net consisted of the following at December 30, 2016 and January 1, 2016 (in thousands):
 
 
 
2016
 
2015
 
Raw materials and purchased parts
 
$
2,264
 
$
2,317
 
Work in process
 
 
1,924
 
 
1,995
 
Finished goods
 
 
14,268
 
 
15,058
 
 
 
 
18,456
 
 
19,370
 
Less inventory reserves
 
 
3,631
 
 
3,449
 
 
 
$
14,825
 
$
15,921