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Income (Loss) Per Share - Anti-dilutive Securities (Detail)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 26, 2014
Sep. 27, 2013
Sep. 26, 2014
Sep. 27, 2013
Earnings Per Share [Abstract]        
Potentially dilutive equity awards outstanding 5,196 6,144 9,321 10,681