Leases Rent Expense Disclosures (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Operating Leased Assets [Line Items]
Minimum rent on real property	$ 43,650	$ 34,758	$ 20,765
Contingent rent on real property	3,548	3,125	1,900
Restaurant rent expense	47,198	37,883	22,665
Rent expense on operating leases	47,423	38,057	22,779
General and Administrative Expense [Member]
Operating Leased Assets [Line Items]
Rent expense on operating leases	$ 225	$ 174	$ 114