Note 8 - Income Taxes (Details Textual) - USD ($)	9 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Sep. 28, 2019
Effective Income Tax Rate Reconciliation, Percent, Total	21.70%	22.40%
Deferred Tax Liabilities, Net, Noncurrent	$ 7,292,000		$ 6,900,000
Deferred Tax Assets, Tax Credit Carryforwards, Total	8,000
Deferred Tax Assets, Valuation Allowance, Total	202,000		$ 257,000
Unrecognized Tax Benefits, Ending Balance	68,000
State and Local Jurisdiction [Member]
Operating Loss Carryforwards, Total	$ 2,300,000
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