Basis Of Presentation Subsequent Events (Details) $ in Thousands		3 Months Ended							12 Months Ended
	Feb. 28, 2017 USD ($)	Jan. 01, 2017	Oct. 02, 2016	Jul. 03, 2016	Apr. 03, 2016	Jan. 03, 2016	Sep. 27, 2015	Jun. 28, 2015	Jan. 01, 2017 USD ($)	Jan. 03, 2016 USD ($)	Dec. 28, 2014 USD ($)	Dec. 30, 2012
Subsequent Event [Line Items]
Restaurants Acquired		27	11	6	12	46	5	4	56	55	123	278
Payments to Acquire Businesses, Net of Cash Acquired									$ (48,088)	$ (52,750)	$ (52,200)
Subsequent Event [Member]
Subsequent Event [Line Items]
Restaurants Acquired	43
Payments to Acquire Businesses, Net of Cash Acquired	$ (20,400)