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Note K - Stock-based Compensation - Incentive Stock Options by Exercise Price Range (Details) - $ / shares |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2023 | Sep. 24, 2022 | Sep. 30, 2023 | Sep. 25, 2021 | Sep. 26, 2020
Incentive Stock Options [Member] |  |  |  |  |
Options outstanding (in shares) | 271,821 | 433,359 | 271,821 | 447,622 | 470,420
Options outstanding, weighted-average exercise price (in dollars per share) | $ 147.45 | $ 146.98 | $ 147.45 | $ 146.98 | $ 136.62
Exercisable Options (in shares) | 102,158 |  | 102,158 |  |
Exercisable Options, weighted-average exercise price (in dollars per share) | $ 145.91 |  | $ 145.91 |  |
Incentive Stock Options [Member] | Exercise Price Range 1 [Member] |  |  |  |  |
Range of exercise price, lower limit (in dollars per share) |  | 125.83 |  |  |
Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit |  | 125.83 |  |  |
Range of exercise price, upper limit (in dollars per share) |  |  | $ 158.97 |  |
Options outstanding (in shares) | 136,548 |  | 136,548 |  |
Options oustanding, weighted-average remaining contractual life (Year) |  |  | 3 years |  |
Options outstanding, weighted-average exercise price (in dollars per share) | $ 130.26 |  | $ 130.26 |  |
Exercisable Options (in shares) | 48,508 |  | 48,508 |  |
Exercisable Options, weighted-average exercise price (in dollars per share) | $ 126.27 |  | $ 126.27 |  |
Incentive Stock Options [Member] | Exercise Price Range 2 [Member] |  |  |  |  |
Range of exercise price, lower limit (in dollars per share) |  | 163.29 |  |  |
Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit |  | $ 163.29 |  |  |
Range of exercise price, upper limit (in dollars per share) |  |  | $ 192.13 |  |
Options outstanding (in shares) | 135,273 |  | 135,273 |  |
Options oustanding, weighted-average remaining contractual life (Year) |  |  | 1 year 9 months 18 days |  |
Options outstanding, weighted-average exercise price (in dollars per share) | $ 164.81 |  | $ 164.81 |  |
Exercisable Options (in shares) | 53,650 |  | 53,650 |  |
Exercisable Options, weighted-average exercise price (in dollars per share) | $ 163.67 |  | $ 163.67 |  |
Non-qualified Stock Options [Member] |  |  |  |  |
Options outstanding (in shares) | 211,378 | 228,318 | 211,378 | 293,737 | 346,442
Options outstanding, weighted-average exercise price (in dollars per share) | $ 140.79 | $ 132.29 | $ 140.79 | $ 132.29 | $ 122.04
Exercisable Options (in shares) | 161,128 |  | 161,128 |  |
Exercisable Options, weighted-average exercise price (in dollars per share) | $ 136.55 |  | $ 136.55 |  |
Non-qualified Stock Options [Member] | Exercise Price Range 1 [Member] |  |  |  |  |
Range of exercise price, lower limit (in dollars per share) | 94.24 |  |  |  |
Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit | $ 94.24 |  |  |  |
Range of exercise price, upper limit (in dollars per share) |  |  | $ 119.44 |  |
Options outstanding (in shares) | 60,000 |  | 60,000 |  |
Options oustanding, weighted-average remaining contractual life (Year) |  |  | 2 years |  |
Options outstanding, weighted-average exercise price (in dollars per share) | $ 110.51 |  | $ 110.51 |  |
Exercisable Options (in shares) | 60,000 |  | 60,000 |  |
Exercisable Options, weighted-average exercise price (in dollars per share) | $ 110.51 |  | $ 110.51 |  |
Non-qualified Stock Options [Member] | Exercise Price Range 2 [Member] |  |  |  |  |
Range of exercise price, lower limit (in dollars per share) | 125.83 |  |  |  |
Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit | $ 125.83 |  |  |  |
Range of exercise price, upper limit (in dollars per share) |  |  | $ 153.65 |  |
Options outstanding (in shares) | 91,544 |  | 91,544 |  |
Options oustanding, weighted-average remaining contractual life (Year) |  |  | 4 years 6 months |  |
Options outstanding, weighted-average exercise price (in dollars per share) | $ 139.28 |  | $ 139.28 |  |
Exercisable Options (in shares) | 61,784 |  | 61,784 |  |
Exercisable Options, weighted-average exercise price (in dollars per share) | $ 135.71 |  | $ 135.71 |  |
Non-qualified Stock Options [Member] | Exercise Price Range 3 [Member] |  |  |  |  |
Range of exercise price, lower limit (in dollars per share) |  | 163.29 |  |  |
Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit |  | $ 163.29 |  |  |
Range of exercise price, upper limit (in dollars per share) |  |  | $ 191.4 |  |
Options outstanding (in shares) | 59,834 |  | 59,834 |  |
Options oustanding, weighted-average remaining contractual life (Year) |  |  | 3 years 1 month 6 days |  |
Options outstanding, weighted-average exercise price (in dollars per share) | $ 173.46 |  | $ 173.46 |  |
Exercisable Options (in shares) | 39,344 |  | 39,344 |  |
Exercisable Options, weighted-average exercise price (in dollars per share) | $ 177.58 |  | $ 177.58 |  |

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- 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://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (e)(1) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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