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Inventories, net (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 29, 2014
Dec. 31, 2013
Inventory Disclosure [Abstract]    
Raw materials $ 16,838 $ 19,800
Work-in-process 11,570 9,435
Finished products 19,401 18,549
Balance, end of the period $ 47,809 $ 47,784 [1]
[1] The balance sheet as of December 31, 2013 has been derived from the audited financial statements at that date.