Geographic and Significant Customer Information - Summary of Customer Concentrations as Percentage of Revenue and Accounts Receivable (Details) - Customer Concentration Risk	3 Months Ended		9 Months Ended
	Jul. 03, 2020	Jun. 28, 2019	Jul. 03, 2020	Jun. 28, 2019
Revenue
Revenue from External Customer [Line Items]
Concentration risk, percentage	66.00%	54.00%	61.00%	54.00%
Revenue | Customer A
Revenue from External Customer [Line Items]
Concentration risk, percentage	13.00%	17.00%	14.00%	15.00%
Revenue | Customer B
Revenue from External Customer [Line Items]
Concentration risk, percentage	14.00%	0.00%	11.00%	0.00%
Revenue | Customer C
Revenue from External Customer [Line Items]
Concentration risk, percentage	14.00%		10.00%
Accounts Receivable | Customer A
Revenue from External Customer [Line Items]
Concentration risk, percentage			18.00%	24.00%
Accounts Receivable | Customer C
Revenue from External Customer [Line Items]
Concentration risk, percentage			12.00%	8.00%
Accounts Receivable | Customer D
Revenue from External Customer [Line Items]
Concentration risk, percentage			11.00%	10.00%