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Share-Based Compensation-Fair Value (Details 5) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jul. 01, 2012
Jun. 30, 2013
Jul. 01, 2012
Fair value of options and RSUs        
Fair value of options vested $ 7,282 $ 8,214 $ 21,850 $ 22,974
Fair value of RSUs vested 6,082 4,283 35,903 23,584
Total fair value of options and RSUs vested $ 13,364 $ 12,497 $ 57,753 $ 46,558