Quarterly report pursuant to Section 13 or 15(d)

Inventories (Details)

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Inventories (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 27, 2014
Dec. 28, 2013
Inventories [Abstract]    
Raw materials $ 12,745 $ 13,824
Work in progress 7,970 8,147
Finished goods 21,869 25,271
Inventories $ 42,584 $ 47,242