Impairment, Disposition Of Property And Equipment, Restaurant Closing Costs And Restructuring (Details) (USD $) In Thousands, unless otherwise specified	4 Months Ended
	Jan. 19, 2014	Jan. 20, 2013 litigation
Restructuring Cost and Reserve [Line Items]
Asset Impairment Charges	$ 95	$ 2,522
Losses (gains) on the disposition of property and equipment, net	992	(832)
Restructuring and Related Cost, Incurred Cost	564	751
Impairment and other charges, net	1,909	3,253
Restructuring Reserve [Roll Forward]
Severance costs	298	368
Restructuring Charges	298	812
Other restructuring costs	0	444
Number of Closed Restaurants Related to Eminent Domain Proceeds in Current Period		2
Gains from imminent domain [Member]
Restructuring Cost and Reserve [Line Items]
Losses (gains) on the disposition of property and equipment, net		(2,100)
Facility Closing [Member]
Restructuring Reserve [Roll Forward]
Balance at beginning of period	16,321	20,677
Cash payments	(1,434)	(1,542)
Balance at end of period	15,499	19,561
Restructuring costs	612	426
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Balance at beginning of period	253	1,758
Cash payments	453	1,455
Severance costs	298	368
Balance at end of period	98	671
Continuing Operations [Member]
Restructuring Cost and Reserve [Line Items]
Losses (gains) on the disposition of property and equipment, net	$ 952	$ (832)