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Inventories (Tables)
3 Months Ended
Mar. 30, 2013
Notes To Financial Statements [Abstract]  
Schedule of Inventory, Current
Inventories at March 30, 2013 and December 29, 2012 are as follows: 
 
Mar 30, 2013

 
Dec 29, 2012

 
(in thousands)
Raw materials and parts
$
104,120

 
$
87,184

Work-in-process
27,290

 
18,957

Finished goods
55,616

 
47,349

 
$
187,026

 
$
153,490