Note 7 - Income Taxes (Details Textual) - USD ($)	3 Months Ended
	Dec. 26, 2021	Dec. 27, 2020	Dec. 27, 2020
Income Tax Expense (Benefit), Total	$ 5,351,000	$ 6,311,000	$ 6,311,000
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest, Total	$ 18,550,000		$ 22,714,000
Effective Income Tax Rate Reconciliation, Percent, Total	28.90%		27.80%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%
Open Tax Year	2015 2016 2017 2018 2019 2020 2021