Impairment Of Long-Lived Assets And Other Lease Charges (Details) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 03, 2016 USD ($)	Jun. 28, 2015 USD ($)	Jul. 03, 2016 USD ($)	Jun. 28, 2015 USD ($)	Jan. 03, 2016 USD ($)
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment Charges	$ 500	$ 300	$ 600	$ 800
Other lease charges	$ (200)		(210)		$ (95)
Provisions for restaurant closures		$ 300	$ 0	1,500	$ 1,472
Previously Impaired [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment Charges				$ 600
Closed Restaurants [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Other Lease Charges, Number of Restaurants	3	2		10