Leases (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Operating Leases, Future Minimum Payments Due [Abstract]
2013	$ 37,322
2014	31,726
2015	25,224
2016	21,456
2017	16,326
Thereafter	29,136
Total future minimum lease payments	161,190
Capital Leases, Future Minimum Payments Due [Abstract]
2013	112
2014	3
2015	0
2016	0
2017	0
Thereafter	0
Total future minimum lease payments	115
Less: amount representing interest	(3)
Present value of future minimum lease payments	112
Facility Rents [Member]
Rent Expense
Minimum Rents	36,104	32,928	33,195
Contingent Rents	9,813	6,480	3,074
Total	45,917	39,408	36,269
Equipment Rents [Member]
Rent Expense
Total	$ 2,627	$ 2,469	$ 2,259