Impairment, Disposition Of Property And Equipment, And Restaurant Closing Costs (Impairment And Disposal Costs Included In Impairment And Other Charges) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 27, 2015	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Impairment, Disposition of Property and Equipment, and Restaurant Closing Costs [Line Items]
Restaurant impairment charges	$ 557	$ 570	$ 3,874
Accelerated depreciation	6,260	1,202	2,554
Losses on disposition of property and equipment, net	1,847	1,680	789
Costs of closed restaurants (primary lease obligations) and other	3,592	2,841	2,469
Restructuring costs	29	8,621	3,451	$ 15,500
Impairment and other charges, net	11,757	14,908	13,439
Continuing Operations [Member]
Impairment, Disposition of Property and Equipment, and Restaurant Closing Costs [Line Items]
Losses on disposition of property and equipment, net	$ 1,319	$ 1,674	$ 1,091