Earnings Per Share (Schedule Of Anti-Dilutive Common Share Equivalents) (Details) - shares shares in Thousands	3 Months Ended
	Mar. 27, 2016	Mar. 29, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted average common share equivalents associated with anti-dilutive stock options and restricted stock units excluded from the computation of diluted EPS	2,619	2,210
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted average common share equivalents associated with anti-dilutive stock options and restricted stock units excluded from the computation of diluted EPS	126	292
Deferred Compensation Arrangement
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted average common share equivalents associated with anti-dilutive stock options and restricted stock units excluded from the computation of diluted EPS	39	27