Note 10 - Income Taxes (Details Textual) - USD ($)	12 Months Ended
	Oct. 03, 2020	Sep. 28, 2019	Sep. 29, 2018
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%	24.50%
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability			$ 3,300,000
Income Tax Benefit Cares Act	$ 223,000
Deferred Tax Liabilities, Net, Total	6,568,000	$ 6,900,000
Deferred Tax Assets, Valuation Allowance, Total	207,000	257,000
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	50,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Total	0	$ 0	$ 0
State and Local Jurisdiction [Member]
Operating Loss Carryforwards, Total	$ 2,500,000
State and Local Jurisdiction [Member] | Earliest Tax Year [Member]
Operating Loss Carryforwards Expiration Date 1	2022
State and Local Jurisdiction [Member] | Latest Tax Year [Member]
Operating Loss Carryforwards Expiration Date 1	2035