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Information about Derivative Positions (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 28, 2013
Sep. 29, 2012
Sep. 28, 2013
Sep. 29, 2012
Dec. 31, 2012
Derivative [Line Items]          
(Losses) gains on forward currency contracts $ (784) $ 1,002 $ (5,212) $ (1,156)  
Gross amounts of recognized liabilities 1,031   1,031   4,730
Gross amounts offset in the condensed consolidated balance sheet 247   247   127
Net amount of liabilities in the condensed consolidated balance sheet $ 784   $ 784   $ 4,603