Note K - Stock-based Compensation - Performance Share Unit Acitvity (Details) - Performance Shares [Member] - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Sep. 30, 2023		Sep. 24, 2022
Balance, number (in shares)	8,868		0
Balance, weighted average grant per share (in dollars per share)	$ 155.01		$ 0
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	21,260		8,868
Granted, weighted average grant per share (in dollars per share)	$ 155.29		$ 155.01
Canceled, number (in shares)	(8,868)	[1]	0
Canceled, weighted average grant date fair value per share (in dollars per share)	$ 155.01	[1]	$ 0
Balance, weighted average remaining contractual life (Year)	2 years 2 months 12 days		2 years 1 month 6 days
Balance, number (in shares)	21,260		8,868
Balance, weighted average grant per share (in dollars per share)	$ 155.29		$ 155.01
Balance, September 30, 2023	$ 3,479

[1] (1) Includes adjustments for performance achievement.