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Employee Benefit Plans (Schedule Of RSU Activity) (Details) (Restricted Stock Units (RSUs) [Member], USD $)
In Thousands, except Per Share data, unless otherwise specified
6 Months Ended
Jul. 01, 2012
Restricted Stock Units (RSUs) [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]  
Number of Shares, Beginning Balance (in shares) 177
Number of Shares, RSUs granted (in shares) 50
Number of Shares, RSUs vested (in shares) (100)
Number of Shares, RSUs cancelled (in shares) (9)
Number of Shares, Ending Balance (in shares) 118
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]  
Weighted Average Grant Date Fair Value Per Share, Beginning Balance (in dollars per share) $ 27.86
Weighted Average Grant Date Fair Value Per Share, RSUs granted (in dollars per share) $ 31.64
Weighted Average Grant Date Fair Value Per Share, RSUs vested (in dollars per share) $ 29.14
Weighted Average Grant Date Fair Value Per Share, RSUs cancelled (in dollars per share) $ 30.59
Weighted Average Grant Date Fair Value Per Share, Ending Balance (in dollars per share) $ 28.17