Note K - Stock-based Compensation - Incentive Stock Options by Exercise Price Range (Details) - Incentive Stock Options [Member] - $ / shares	12 Months Ended
	Sep. 24, 2022	Sep. 25, 2021	Sep. 26, 2020	Sep. 28, 2019
Options outstanding (in shares)	433,359	447,622	470,420	434,152
Options outstanding, weighted-average exercise price (in dollars per share)	$ 145.48	$ 146.98	$ 136.62	$ 136.53
Exercisable options (in shares)	139,174
Exercisable Options, weighted average exercise price (in dollars per share)	$ 154.62
Exercise Price Range 1 [Member]
Range of exercise price, lower limit (in dollars per share)	125.83
Range of exercise price, upper limit (in dollars per share)	$ 158.97
Options outstanding (in shares)	253,675
Options oustanding, weighted-average remaining contractual life (Year)	3 years
Options outstanding, weighted-average exercise price (in dollars per share)	$ 131.93
Exercisable options (in shares)	54,966
Exercisable Options, weighted average exercise price (in dollars per share)	$ 141.30
Exercise Price Range 2 [Member]
Range of exercise price, lower limit (in dollars per share)	163.29
Range of exercise price, upper limit (in dollars per share)	$ 192.13
Options outstanding (in shares)	179,684
Options oustanding, weighted-average remaining contractual life (Year)	2 years 8 months 12 days
Options outstanding, weighted-average exercise price (in dollars per share)	$ 164.61
Exercisable options (in shares)	84,208
Exercisable Options, weighted average exercise price (in dollars per share)	$ 163.31