Restructuring and Impairment Charges (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Jul. 03, 2021	Apr. 03, 2021	Jan. 02, 2021	Jul. 04, 2020	Apr. 04, 2020	Jan. 04, 2020	Jul. 03, 2021	Jul. 04, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment charges	$ 1,238	$ 2,029	$ 0	$ 0	$ 6,003	$ 0	$ 3,267	$ 6,003
Restructuring Charges
Restructuring Cost and Reserve [Line Items]
Other Tax Expense (Benefit)	(100)						$ (300)	(600)
Impaired Long-Lived Assets Held and Used, Asset Name
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment charges	0	0		0	3,054			3,100
Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment charges	$ 1,238	$ 2,029		$ 0	$ 2,949			$ 2,900