Note 12 - Income Taxes (Details Textual) - USD ($)	Sep. 27, 2020	Sep. 29, 2019
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 12,518,000
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	1,000,000	$ 848,000
Deferred Tax Asset, Interest Carryforward	5,383,000
Deferred Tax Assets, Operating Loss Carryforwards, Total	28,240,000	41,610,000
State and Local Jurisdiction [Member]
Unrecognized Tax Benefits Related to Net Operating Loss	10,319,000	$ 10,665,000
Operating Loss Carryforwards, Total	46,066,000
Deferred Tax Assets, Operating Loss Carryforwards, Total	$ 36,392,000