Equity Incentive Plans (Schedule Of Share-Based Compensation, Restricted Stock And Performance-Based Restricted Stock Activity) (Details) (USD $)	12 Months Ended
	Jan. 01, 2012
Equity Incentive Plans [Abstract]
Restricted Stock, Nonvested Shares at beginning	1,112,599
Restricted Stock, Nonvested Shares granted	429,434	[1]
Restricted Stock, Nonvested Shares cancelled	(62,402)
Restricted Stock, Nonvested Shares vested	(520,957)
Restricted Stock, Nonvested Shares at end	958,674
Weighted Average Grant Date Fair Value, beginning	$ 11.39
Weighted Average Grant Date Fair Value, granted	$ 22.17	[1]
Weighted Average Grant Date Fair Value, cancelled	$ 18.96
Weighted Average Grant Date Fair Value, vested	$ 13.95
Weighted Average Grant Date Fair Value, end	$ 14.33

[1] The weighted average grant date fair value for performance-based restricted shares granted was calculated based on the market price on the grant dates. Certain tranches will ultimately be valued when the performance condition is established for each tranche, which generally occurs in the fourth quarter of each fiscal year.