Share-Based Compensation (Details 2) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Jan. 03, 2009
Restricted stock units payable in Stock
Share-based Compensation Arrangement by Share-based Payment Award
Portion of Share-based compensation vesting at end of year three (as a percent)		33.33%
Portion of Share-based compensation vesting at end of year four (as a percent)		33.33%
Portion of Share-based compensation Vesting at end of year five (as a percent)		33.33%
Restricted stock units
Outstanding at the beginning of year, nonvested (in shares)	638
Grants in periods, number of shares	386
Vested in periods, number of shares	(275)
Forfeited RSU's, number of shares	(39)
Outstanding at the end of year, nonvested (in shares)	710
Outstanding at the beginning of year, weighted average grant date fair value	$ 35.53
Grants in periods, weighted average grant date fair value	$ 27.44
Vested in periods, weighted average grant date fair value	$ (39.02)
Forfeited RSU's, weighted average grant date fair value	$ (32.56)
Outstanding at the end of year, weighted average grant date fair value	$ 29.94
Restricted Stock Units Payable in Cash
Share-based Compensation Arrangement by Share-based Payment Award
Vesting period	5 years
Restricted stock units
Outstanding at the beginning of year, nonvested (in shares)	2,927
Grants in periods, number of shares	837
Vested in periods, number of shares	(913)
Forfeited RSU's, number of shares	(311)
Outstanding at the end of year, nonvested (in shares)	2,540
Outstanding at the beginning of year, weighted average grant date fair value	$ 17.33
Grants in periods, weighted average grant date fair value	$ 27.65
Vested in periods, weighted average grant date fair value	$ (15.76)
Forfeited RSU's, weighted average grant date fair value	$ (21.45)
Outstanding at the end of year, weighted average grant date fair value	$ 20.79