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Inventories Stated at Lower of Average Cost or Market (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 29, 2014
Dec. 31, 2013
Inventory [Line Items]    
Raw materials $ 13,369 $ 13,005
Work-in-progress 5,793 8,196
Finished goods 1,582 1,561
Inventories $ 20,744 $ 22,762