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Note L - Stock Options - Nonqualified Stock Options by Excercise Price Range (Details) - Non-qualified Stock Options [Member] - $ / shares | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Sep. 30, 2017 | Sep. 24, 2016 | Sep. 26, 2015 | Sep. 27, 2014
Options outstanding (in shares) | 311,514 | 311,884 | 297,941 | 249,379
Options outstanding, weighted-average remaining contractual life (Year) | 4 years 255 days |  |  |
Options outstanding, weighted-average exercise price (in dollars per share) | $ 92.58 | $ 75.56 | $ 63.34 | $ 53.38
Options exercisable (in shares) | 137,856 |  |  |
Options exercisable, weighted-average exercise price (in dollars per share) | $ 62.21 |  |  |
Exercise Price Range 1 [Member] |  |  |  |
Range of exercise price, lower limit (in dollars per share) | 34.17 |  |  |
Range of exercise price, upper limit (in dollars per share) | $ 47.59 |  |  |
Options outstanding (in shares) | 60,000 |  |  |
Options outstanding, weighted-average remaining contractual life (Year) | 2 years 255 days |  |  |
Options outstanding, weighted-average exercise price (in dollars per share) | $ 41.17 |  |  |
Options exercisable (in shares) | 60,000 |  |  |
Options exercisable, weighted-average exercise price (in dollars per share) | $ 41.17 |  |  |
Exercise Price Range 2 [Member] |  |  |  |
Range of exercise price, lower limit (in dollars per share) | 57.33 |  |  |
Range of exercise price, upper limit (in dollars per share) | $ 81.67 |  |  |
Options outstanding (in shares) | 57,856 |  |  |
Options outstanding, weighted-average remaining contractual life (Year) | 4 years 36 days |  |  |
Options outstanding, weighted-average exercise price (in dollars per share) | $ 72.95 |  |  |
Options exercisable (in shares) | 57,856 |  |  |
Options exercisable, weighted-average exercise price (in dollars per share) | $ 72.95 |  |  |
Exercise Price Range 3 [Member] |  |  |  |
Range of exercise price, lower limit (in dollars per share) | 94.24 |  |  |
Range of exercise price, upper limit (in dollars per share) | $ 131.30 |  |  |
Options outstanding (in shares) | 193,658 |  |  |
Options outstanding, weighted-average remaining contractual life (Year) | 5 years 182 days |  |  |
Options outstanding, weighted-average exercise price (in dollars per share) | $ 114.38 |  |  |
Options exercisable (in shares) | 20,000 |  |  |
Options exercisable, weighted-average exercise price (in dollars per share) | $ 94.24 |  |  |

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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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + 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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + 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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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