Share-Based Compensation (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 24, 2011	Sep. 25, 2010	Sep. 24, 2011	Sep. 25, 2010
Total income tax benefit recognized in the income statement for share-based compensation arrangements	$ 1,400,000	$ 1,000,000	$ 4,800,000	$ 3,300,000
Pre-tax compensation expense	3,600,000	2,500,000	12,300,000	8,400,000
Risk-free interest rate			2.00%
Expected life, in years			4.5
Expected stock price volatility			64.89%
Aggregate intrinsic value for outstanding stock options	100,000		100,000
Aggregate intrinsic value for exercisable stock options	100,000		100,000
Company granted stock options			1,227,280
Stock Options [Member]
Pre-tax compensation expense	3,100,000	800,000	8,600,000	3,300,000
Remaining compensation expense to be recognized			11,200,000
Restricted Stock [Member]
Pre-tax compensation expense	500,000	1,700,000	3,700,000	5,100,000
Remaining compensation expense to be recognized			$ 3,200,000