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Equity-Based Compensation (Weighted-Average Assumptions Used For Employee Grants Of Stock Options And SARs) (Details) (USD $)
3 Months Ended
Mar. 31, 2012
Y
Apr. 02, 2011
Y
Equity-Based Compensation [Abstract]    
Expected dividend yield 0.00% 0.00%
Forfeiture rate 11.50% 9.78%
Volatility 35.33% 39.50%
Risk free interest rate 2.01% 2.26%
Risk free interest rate - range of interest rates, minimum 0.01% 0.06%
Risk free interest rate - range of interest rates, maximum 3.18% 3.41%
Expected weighted-average life, in years 5.42 5.36
Fair value of options and SARs granted $ 0 $ 132,000
Weighted-average grant date fair value of options and SARs granted $ 0.00 $ 14.40