Impairment, Disposition Of Property And Equipment, Restaurant Closing Costs And Restructuring Restructuring Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 27, 2015	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Restructuring Cost and Reserve [Line Items]
Severance costs	$ 29	$ 2,141	$ 2,821
Other restructuring costs	0	6,480	630
Additions	$ 29	$ 8,621	$ 3,451	$ 15,500