Note 15 - Leases - Supplemental Balance Sheet Information Related to Leases (Details) - USD ($) $ in Thousands	Jan. 02, 2021	Oct. 03, 2020
Other assets	$ 2,494	$ 2,522
Accrued expenses	1,284	1,230
Other liabilities	1,218	1,300
Other Noncurrent Assets [Member]
Other assets	2,494	2,522
Accrued Expenses, Current [Member]
Accrued expenses	1,284	1,230
Other Noncurrent Liabilities [Member]
Other liabilities	1,218	1,300
Accrued Expenses Current and Other Noncurrent Liabilities [Member]
Total operating lease liabilities	$ 2,502	$ 2,530