Commitments and Contingencies - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Jun. 26, 2020	Jun. 26, 2020	Sep. 30, 2019
Loss Contingencies [Line Items]
Purchase obligations for rest of fiscal year	$ 145,622	$ 145,622
Purchase obligations for year two	2,850	2,850
Total settlement for prior cap agreement deductible	13,000	13,000
Flood
Loss Contingencies [Line Items]
Estimated loss from unusual or infrequent item	1,486	6,046
Insurance deductible expense		1,000
Insurance recovery amount	1,486	5,046
Minimum | Flood
Loss Contingencies [Line Items]
Estimated loss from unusual or infrequent item		6,046
Maximum | Flood
Loss Contingencies [Line Items]
Estimated loss from unusual or infrequent item		13,000
Special Products Claims and Other Product Liabilities
Loss Contingencies [Line Items]
Product liability	823	823	$ 2,424
Special Products Claims and Other Product Liabilities | Minimum
Loss Contingencies [Line Items]
Probable losses	1,000	1,000
Special Products Claims and Other Product Liabilities | Maximum
Loss Contingencies [Line Items]
Probable losses	8,000	8,000
Special Products Claims
Loss Contingencies [Line Items]
Total settlement for cap agreement deductible	$ 12,000	$ 12,000