Note 7 - Income Taxes (Details Textual) - USD ($)	9 Months Ended
	Jul. 01, 2017	Jul. 02, 2016	Oct. 01, 2016
Effective Income Tax Rate Reconciliation, Percent	33.80%	34.00%
Deferred Tax Liabilities, Net, Noncurrent	$ 8,177,000		$ 5,472,000
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	7,500,000
Deferred Tax Assets, Valuation Allowance	253,000		$ 280,000
State and Local Jurisdiction [Member]
Deferred Tax Assets, Tax Credit Carryforwards	$ 87,000
State and Local Jurisdiction [Member] | Earliest Tax Year [Member]
Operating Loss Carryforwards Expiration Date 1	2017
Tax Credit Carryforward, Expiration Date 1	2018
State and Local Jurisdiction [Member] | Latest Tax Year [Member]
Operating Loss Carryforwards Expiration Date 1	2031
Tax Credit Carryforward, Expiration Date 1	2020