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Stockholders' Equity (Narrative) (Details) (USD $)
In Millions, except Share data, unless otherwise specified
6 Months Ended
Jul. 01, 2012
Jul. 03, 2011
Oct. 21, 2008
Stockholders' Equity Note [Abstract]      
Shares authorized for repurchase by Board of Directors (in shares)     6,000,000
Common stock repurchased to facilitate tax withholding for RSUs (in shares) 22,000 24,000  
Common stock repurchased to facilitate tax withholding for RSUs, value $ 0.8 $ 0.9