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Note L - Stock Options (Tables) | 12 Months Ended
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Sep. 28, 2019
Notes Tables |
Share-based Payment Arrangement, Option, Activity [Table Text Block] |
|  | Incentive Stock Options |  |  | Nonqualified Stock Options |
|  |  |  |  |  | Weighted- |  |  |  |  |  |  | Weighted- |
|  | Stock |  |  | Average |  |  | Stock |  |  | Average |
|  | Options |  |  | Exercise |  |  | Options |  |  | Exercise |
|  | Outstanding |  |  | Price |  |  | Outstanding |  |  | Price |
Balance, September 24, 2016 |  |  | 355,787 |  |  | $ | 92.81 |  |  |  | 311,884 |  |  | $ | 75.56 |
Granted |  |  | 121,508 |  |  |  | 129.35 |  |  |  | 59,786 |  |  |  | 129.94 |
Exercised |  |  | (78,114 | ) |  |  | 65.49 |  |  |  | (60,156 | ) |  |  | 41.46 |
Canceled |  |  | (6,200 | ) |  |  | 100.93 |  |  |  | - |  |  |  | - |
Balance, September 30, 2017 |  |  | 392,981 |  |  |  | 109.41 |  |  |  | 311,514 |  |  |  | 92.58 |
Granted |  |  | 122,595 |  |  |  | 141.07 |  |  |  | 58,083 |  |  |  | 144.41 |
Exercised |  |  | (64,470 | ) |  |  | 90.75 |  |  |  | (37,328 | ) |  |  | 56.85 |
Canceled |  |  | (17,550 | ) |  |  | 115.21 |  |  |  | - |  |  |  | - |
Balance, September 29, 2018 |  |  | 433,556 |  |  |  | 120.90 |  |  |  | 332,269 |  |  |  | 105.66 |
Granted |  |  | 118,934 |  |  |  | 163.14 |  |  |  | 66,236 |  |  |  | 171.78 |
Exercised |  |  | (100,018 | ) |  |  | 102.01 |  |  |  | (35,763 | ) |  |  | 101.03 |
Canceled |  |  | (18,320 | ) |  |  | 127.88 |  |  |  | - |  |  |  | - |
Balance, September 28, 2019 |  |  | 434,152 |  |  | $ | 136.53 |  |  |  | 362,742 |  |  | $ | 118.19 |
Exercisable Options |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
September 28, 2019 |  |  | 94,492 |  |  | $ | 106.36 |  |  |  | 179,428 |  |  | $ | 86.10 |
Non-qualified Stock Options [Member] |
Notes Tables |
Share-based Payment Arrangement, Option, Exercise Price Range [Table Text Block] |
|  |  |  |  |  | Options Outstanding |  |  | Options Exercisable |
|  |  |  |  |  | Number |  |  | Weighted- |  |  |  |  |  |  | Number |  |  |  |  |
|  |  |  |  |  | Outstanding |  |  | Average |  |  | Weighted- |  |  | Exercisable |  |  | Weighted- |
|  |  |  |  |  | at |  |  | Remaining |  |  | Average |  |  | at |  |  | Average |
| Range of |  |  | September 28, |  |  | Contractual |  |  | Exercise |  |  | September 28, |  |  | Exercise |
| Exercise Prices |  |  | 2019 |  |  | Life |  |  | Price |  |  | 2019 |  |  | Price |
| $41.75 | - | $57.33 |  |  |  | 60,000 |  |  |  | 2.0 |  |  | $ | 48.89 |  |  |  | 60,000 |  |  | $ | 48.89 |
| $80.79 | - | $119.44 |  |  |  | 119,428 |  |  |  | 4.1 |  |  |  | 104.79 |  |  |  | 119,428 |  |  |  | 104.79 |
| $129.26 | - | $191.40 |  |  |  | 183,314 |  |  |  | 5.3 |  |  |  | 149.60 |  |  |  | - |  |  |  | - |
| Total options |  |  |  | 362,742 |  |  |  | 4.4 |  |  |  | 118.19 |  |  |  | 179,428 |  |  |  | 86.10 |
Incentive Stock Options [Member] |
Notes Tables |
Share-based Payment Arrangement, Option, Exercise Price Range [Table Text Block] |
|  |  |  |  |  | Options Outstanding |  |  | Options Exercisable |
|  |  |  |  |  | Number |  |  | Weighted- |  |  |  |  |  |  | Number |  |  |  |  |
|  |  |  |  |  | Outstanding |  |  | Average |  |  | Weighted- |  |  | Exercisable |  |  | Weighted- |
|  |  |  |  |  | at |  |  | Remaining |  |  | Average |  |  | at |  |  | Average |
| Range of |  |  | September 28, |  |  | Contractual |  |  | Exercise |  |  | September 28, |  |  | Exercise |
| Exercise Prices |  |  | 2019 |  |  | Life |  |  | Price |  |  | 2019 |  |  | Price |
| $100.76 | - | $143.69 |  |  |  | 317,018 |  |  |  | 2.4 |  |  | $ | 126.67 |  |  |  | 94,492 |  |  | $ | 106.36 |
| $153.42 | - | $163.29 |  |  |  | 117,134 |  |  |  | 4.6 |  |  |  | 163.20 |  |  |  | - |  |  |  | - |
| Total options |  |  |  | 434,152 |  |  |  | 3.0 |  |  |  | 136.53 |  |  |  | 94,492 |  |  |  | 106.36 |

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