Note 15 - Leases - Supplemental Balance Sheet Information Related to Leases (Details) - USD ($) $ in Thousands	Mar. 28, 2020	Sep. 28, 2019
Operating Lease, Right-of-Use Asset	$ 1,950
Accrued expenses	919
Other liabilities	1,019
Total operating lease liabilities	1,938
Other Noncurrent Assets [Member]
Operating Lease, Right-of-Use Asset	1,950
Accrued Expenses, Current [Member]
Accrued expenses	919
Other Noncurrent Liabilities [Member]
Other liabilities	$ 1,019