Note 5 Leases (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Jan. 02, 2021		Oct. 03, 2020
Asset and Liabilities, Lessee [Line Items]
Operating Lease, Right Of Use Asset, Accumulated Amortization	$ 19,000		$ 16,000
Operating Lease, Liability	$ 55,597
Operating Lease, Weighted Average Remaining Lease Term	6 years 7 months 28 days		6 years 10 months 17 days
Operating Lease, Weighted Average Discount Rate, Percent	3.02%		3.13%
Other Assets [Member]
Asset and Liabilities, Lessee [Line Items]
Operating Lease, Right-of-Use Asset	$ 53,407	[1]	$ 52,552
Accrued Liabilities [Member]
Asset and Liabilities, Lessee [Line Items]
Operating Lease, Liability, Current	17,334		16,659
Other Noncurrent Liabilities [Member]
Asset and Liabilities, Lessee [Line Items]
Operating Lease, Liability, Noncurrent	38,263		37,015
Liabilities, Total [Member]
Asset and Liabilities, Lessee [Line Items]
Operating Lease, Liability	$ 55,597		$ 53,674

[1] Net of accumulated amortization of $19 million and $16 million as of January 2, 2021 and October 3, 2020, respectively.