Restructuring Plan - Accrued Expenses and Compensation (Details) $ in Thousands	3 Months Ended
	Jan. 02, 2021 USD ($)
Restructuring Reserve [Roll Forward]
Restructuring charges	$ (2,611)
Employee Related Costs
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	1,620
Restructuring charges	190
Cash paid	(1,224)
Restructuring reserve, ending balance	586
Other Restructuring Costs
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	2,971
Restructuring charges	(556)
Cash paid	(1,928)
Restructuring reserve, ending balance	487
Total
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	4,591
Restructuring charges	(366)
Cash paid	(3,152)
Restructuring reserve, ending balance	$ 1,073