Note K - Stock-based Compensation - Stock Option Activity (Details) - $ / shares	12 Months Ended
	Sep. 24, 2022	Sep. 25, 2021	Sep. 26, 2020
Incentive Stock Options [Member]
Balance (in shares)	447,622	470,420	434,152
Balance, weighted average exercise price (in dollars per share)	$ 146.98	$ 136.62	$ 136.53
Granted (in shares)	103,405	111,862	124,414
Granted, weighted average exercise price (in dollars per share)	$ 132.38	$ 165.53	$ 126.33
Exercised (in shares)	(67,782)	(102,976)	(51,350)
Exercised, weighted average exercise price (in dollars per share)	$ 131.35	$ 120.83	$ 109.73
Canceled (in shares)	(49,886)	(31,684)	(36,796)
Canceled, weighted average exercise price (in dollars per share)	$ 150.85	$ 143.74	$ 138.34
Balance (in shares)	433,359	447,622	470,420
Balance, weighted average exercise price (in dollars per share)	$ 145.48	$ 146.98	$ 136.62
Exercisable options (in shares)	139,174
Exercisable Options, weighted average exercise price (in dollars per share)	$ 154.62
Non-qualified Stock Options [Member]
Balance (in shares)	293,737	346,442	362,742
Balance, weighted average exercise price (in dollars per share)	$ 132.29	$ 122.04	$ 118.19
Granted (in shares)	11,545	43,970	37,074
Granted, weighted average exercise price (in dollars per share)	$ 132.38	$ 160.14	$ 125.83
Exercised (in shares)	(60,581)	(55,453)	(24,182)
Exercised, weighted average exercise price (in dollars per share)	$ 107.17	$ 120.92	$ 53.43
Canceled (in shares)	(36,383)	(41,222)	(29,192)
Canceled, weighted average exercise price (in dollars per share)	$ 140.40	$ 95.95	$ 135.79
Balance (in shares)	208,318	293,737	346,442
Balance, weighted average exercise price (in dollars per share)	$ 138.19	$ 132.29	$ 122.04
Exercisable options (in shares)	107,565
Exercisable Options, weighted average exercise price (in dollars per share)	$ 123.65