Earnings Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Apr. 01, 2014	Mar. 26, 2013
Amounts used for basic and diluted per share calculations
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 42,395	$ 48,117
Weighted average number of shares outstanding - basic (in shares)	27,269	29,150
Effect of dilutive stock-based employee compensation awards (in shares)	136	176
Weighted average number of shares outstanding - diluted (in shares)	27,405	29,326
Earnings per common share:
Basic (in dollars per share)	$ 1.55	$ 1.65
Diluted (in dollars per share)	$ 1.55	$ 1.64