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Condensed Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 04, 2015
Jun. 28, 2014
Jul. 04, 2015
Jun. 28, 2014
Statement Condensed Consolidated Statements Of Comprehensive Income Unaudited [Abstract]        
Tax on other comprehensive income $ 106 $ (481) $ (3,734) $ (1,288)