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Condensed Consolidated Statements Of Comprehensive Income (Unaudited) (Parenthetical) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jul. 02, 2011
Jun. 30, 2012
Jul. 02, 2011
Statement of Income and Comprehensive Income [Abstract]        
Net unrealized (losses)/gains on derivative instruments, tax effect $ (235) $ 73 $ (180) $ 311
Comprehensive income attributable to noncontrolling interests, tax effect $ 66 $ 94 $ 96 $ 154