Basis Of Presentation Subsequent Events (Details) $ in Thousands		3 Months Ended						12 Months Ended
	Feb. 23, 2016 USD ($)	Jan. 03, 2016	Sep. 27, 2015	Jun. 28, 2015	Dec. 28, 2014	Sep. 28, 2014	Jun. 29, 2014	Jan. 03, 2016 USD ($)	Dec. 28, 2014 USD ($)	Dec. 29, 2013 USD ($)
Subsequent Event [Line Items]
Restaurants Acquired		46	5	4	94	25	4	55	123
Payments to Acquire Businesses, Net of Cash Acquired								$ (52,750)	$ (52,200)	$ 0
Subsequent Event [Member]
Subsequent Event [Line Items]
Restaurants Acquired	12
Payments to Acquire Businesses, Net of Cash Acquired	$ (7,100)