Note 8 - Shareholders' Equity - Summary of Stock Option Activity (Details) - $ / shares	12 Months Ended
	Sep. 26, 2023	Sep. 27, 2022
Outstanding at beginning of year, Number (in shares)	470,161
Outstanding at beginning of year, Weighted Average Exercise Price (in dollars per share)	$ 3.97
Options granted, shares (in shares)	45,000
Options granted, Weighted Average Exercise Price (in dollars per share)	$ 2.81
Options exercised, Number (in shares)	(2,000)	(56,104)
Options exercised, weighted average exercise price (in dollars per share)	$ 2.31
Forfeited, Number (in shares)	(75,633)
Forfeited, Weighted Average Exercise Price (in dollars per share)	$ 3.49
Expired, Number (in shares)	0
Expired, Weighted Average Exercise Price (in dollars per share)	$ 0
Outstanding, Number (in shares)	437,538	470,161
Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 3.95	$ 3.97
Outstanding, Weighted Average Remaining Contractual Term (Year)	4 years 6 months 25 days
Exercisable, Number (in shares)	322,607
Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 3.65
Exercisable, Weighted Average Remaining Contractual Term (Year)	4 years 1 month 28 days