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Impairment and other charges, net Accrued severance (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 07, 2019	Jul. 08, 2018	Jul. 07, 2019	Jul. 08, 2018
Restructuring Reserve [Roll Forward]
Restructuring Costs	$ (64)	$ 1,872	$ 6,722	$ 4,805
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve			5,309
Restructuring Costs	287	$ 1,476	5,436	$ 2,828
Accruals released			(605)
Payments for Restructuring			(8,167)
Restructuring Reserve	$ 2,483		2,483
Employee Severance & Other [Domain]
Restructuring Reserve [Roll Forward]
Restructuring Costs			$ 5,946