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Income Taxes - Components of Provision for Income Taxes (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jul. 01, 2012
Jun. 30, 2013
Jul. 01, 2012
Provision for/(benefit from) income taxes:        
Continuing operations $ 2,795 $ 1,659 $ 5,598 $ 2,253
Discontinued operations   (220)   (86)
Provision for income taxes $ 2,795 $ 1,439 $ 5,598 $ 2,167