Note 7 - Income Taxes - Reconciliation of Effective Income Tax Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 26, 2023	Sep. 27, 2022
Total expense (benefit) computed by applying statutory federal rate	$ 182	$ (556)
State income tax, net of federal tax benefit	344	(56)
FICA/WOTC tax credits	(989)	(694)
Effect of change in tax law	0	0
Effect of change in valuation allowance	(10,535)	1,164
Permanent differences	383	60
Other	(172)	87
Provision for income taxes	$ (10,787)	$ (5)