Impairment Of Long-Lived Assets And Other Lease Charges Closed Restaurant Reserve Activity (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended		12 Months Ended
	Jun. 28, 2015	Jun. 28, 2015	Jun. 29, 2014	Dec. 28, 2014
Restructuring Reserve [Roll Forward]
Closed-restaurant reserve, beginning of the period		$ 1,721	$ 1,466	$ 1,466
Payments, net		(440)		(721)
Other adjustments, including the effect of discounting further obligations and changes in estimates		106		165
Closed-restaurant reserve, end of the period	$ 2,860	2,860		1,721
Provisions for closures [Member]
Restructuring Reserve [Roll Forward]
Provision for restaurant closures	$ 300	1,472	$ 400	724
Changes in estimates [Member]
Restructuring Reserve [Roll Forward]
Provision for restaurant closures		$ 1		$ 87