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Note K - Stock Options - Stock Option Activity (Details) - $ / shares	12 Months Ended
	Sep. 25, 2021	Sep. 26, 2020	Sep. 28, 2019
Incentive Stock Options [Member]
Balance (in shares)	470,420	434,152	433,556
Balance, weighted average exercise price (in dollars per share)	$ 136.62	$ 136.53	$ 120.90
Granted (in shares)	111,862	124,414	118,934
Granted, weighted average exercise price (in dollars per share)	$ 165.53	$ 126.33	$ 163.14
Exercised (in shares)	(102,976)	(51,350)	(100,018)
Exercised, weighted average exercise price (in dollars per share)	$ 120.83	$ 109.73	$ 102.01
Canceled (in shares)	(31,684)	(36,796)	(18,320)
Canceled, weighted average exercise price (in dollars per share)	$ 143.74	$ 138.34	$ 127.88
Balance (in shares)	447,622	470,420	434,152
Balance, weighted average exercise price (in dollars per share)	$ 146.98	$ 136.62	$ 136.53
Exercisable options (in shares)	123,552
Exercisable Options, weighted average exercise price (in dollars per share)	$ 136.24
Non-qualified Stock Options [Member]
Balance (in shares)	346,442	362,742	332,269
Balance, weighted average exercise price (in dollars per share)	$ 122.04	$ 118.19	$ 105.66
Granted (in shares)	43,970	37,074	66,236
Granted, weighted average exercise price (in dollars per share)	$ 160.14	$ 125.83	$ 171.78
Exercised (in shares)	(55,453)	(24,182)	(35,763)
Exercised, weighted average exercise price (in dollars per share)	$ 120.92	$ 53.43	$ 101.03
Canceled (in shares)	(41,222)	(29,192)	0
Canceled, weighted average exercise price (in dollars per share)	$ 95.95	$ 135.79	$ 0
Balance (in shares)	293,737	346,442	362,742
Balance, weighted average exercise price (in dollars per share)	$ 132.29	$ 122.04	$ 118.19
Exercisable options (in shares)	144,327
Exercisable Options, weighted average exercise price (in dollars per share)	$ 108.19

X

- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
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- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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- Definition

Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

+ References

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-Name Accounting Standards Codification
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- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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