Note K - Stock-based Compensation - Nonqualified Stock Options by Exercise Price Range (Details) - Non-qualified Stock Options [Member] - $ / shares	12 Months Ended
	Sep. 24, 2022	Sep. 25, 2021	Sep. 26, 2020	Sep. 28, 2019
Options outstanding (in shares)	208,318	293,737	346,442	362,742
Options outstanding, weighted-average exercise price (in dollars per share)	$ 138.19	$ 132.29	$ 122.04	$ 118.19
Exercisable options (in shares)	107,565
Exercisable Options, weighted average exercise price (in dollars per share)	$ 123.65
Exercise Price Range 1 [Member]
Range of exercise price, lower limit (in dollars per share)	80.79
Range of exercise price, upper limit (in dollars per share)	$ 117.85
Options outstanding (in shares)	60,000
Options oustanding, weighted-average remaining contractual life (Year)	2 years
Options outstanding, weighted-average exercise price (in dollars per share)	$ 97.63
Exercisable options (in shares)	60,000
Exercisable Options, weighted average exercise price (in dollars per share)	$ 97.63
Exercise Price Range 2 [Member]
Range of exercise price, lower limit (in dollars per share)	117.85
Range of exercise price, upper limit (in dollars per share)	$ 153.65
Options outstanding (in shares)	82,544
Options oustanding, weighted-average remaining contractual life (Year)	2 years 9 months 18 days
Options outstanding, weighted-average exercise price (in dollars per share)	$ 140.22
Exercisable options (in shares)	23,573
Exercisable Options, weighted average exercise price (in dollars per share)	$ 149.39
Exercise Price Range 3 [Member]
Range of exercise price, lower limit (in dollars per share)	163.29
Range of exercise price, upper limit (in dollars per share)	$ 191.40
Options outstanding (in shares)	65,774
Options oustanding, weighted-average remaining contractual life (Year)	2 years 4 months 24 days
Options outstanding, weighted-average exercise price (in dollars per share)	$ 172.64
Exercisable options (in shares)	23,992
Exercisable Options, weighted average exercise price (in dollars per share)	$ 163.42