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Debt - Long-term Debt (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 29, 2013
Dec. 31, 2012
Longterm Line Of Credit Current And Noncurrent [Abstract]    
Revolving credit facility, weighted-average interest rate of 1.9% (2013), and 1.8% (2012) due in 2017 $ 128,600 $ 153,500