Note 13 - Income Taxes (Details Textual) - USD ($)	Sep. 26, 2021	Sep. 27, 2020
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 1,033,000
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	1,393,000	$ 1,000,000
Deferred Tax Asset, Interest Carryforward	0	5,383,000
Deferred Tax Assets, Operating Loss Carryforwards, Total	26,999,000	28,240,000
State and Local Jurisdiction [Member]
Unrecognized Tax Benefits Related to Net Operating Loss	10,984,000	$ 10,319,000
Operating Loss Carryforwards, Total	45,160,000
Deferred Tax Assets, Operating Loss Carryforwards, Total	$ 35,676,000