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Note A - Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Sep. 30, 2017
Notes Tables |
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] |
|  | (in thousands) |
Balance at September 24, 2016 |  | $ | 354 |
Additions based on tax positions related to the current year |  |  | 20 |
Reductions for tax positions of prior years |  |  | - |
Settlements |  |  | - |
Balance at September 30, 2017 |  | $ | 374 |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Fiscal Year Ended September 30, 2017 |
|  | Income |  |  | Shares |  |  | Per Share |
|  | (Numerator) |  |  | (Denominator) |  |  | Amount |
|  | (in thousands, except per share amounts) |
Earnings Per Basic Share |  |  |  |  |  |  |  |  |  |  |  |
Net Income available to common stockholders |  | $ | 79,174 |  |  |  | 18,707 |  |  | $ | 4.23 |
Effect of Dilutive Securities |  |  |  |  |  |  |  |  |  |  |  |
Options |  |  | - |  |  |  | 109 |  |  |  | (0.02 | )
Earnings Per Diluted Share |  |  |  |  |  |  |  |  |  |  |  |
Net Income available to common stockholders plus assumed conversions |  | $ | 79,174 |  |  |  | 18,816 |  |  | $ | 4.21 |
|  | Fiscal Year Ended September 24, 2016 |
|  | Income |  |  | Shares |  |  | Per Share |
|  | (Numerator) |  |  | (Denominator) |  |  | Amount |
|  | (in thousands, except per share amounts) |
Earnings Per Basic Share |  |  |  |  |  |  |  |  |  |  |  |
Net Income available to common stockholders |  | $ | 75,975 |  |  |  | 18,649 |  |  | $ | 4.07 |
Effect of Dilutive Securities |  |  |  |  |  |  |  |  |  |  |  |
Options |  |  | - |  |  |  | 120 |  |  |  | (0.02 | )
Earnings Per Diluted Share |  |  |  |  |  |  |  |  |  |  |  |
Net Income available to common stockholders plus assumed conversions |  | $ | 75,975 |  |  |  | 18,769 |  |  | $ | 4.05 |
|  | Fiscal Year Ended September 26, 2015 |
|  | Income |  |  | Shares |  |  | Per Share |
|  | (Numerator) |  |  | (Denominator) |  |  | Amount |
|  | (in thousands, except per share amounts) |
Earnings Per Basic Share |  |  |  |  |  |  |  |  |  |  |  |
Net Income available to common stockholders |  | $ | 70,183 |  |  |  | 18,685 |  |  | $ | 3.76 |
Effect of Dilutive Securities |  |  |  |  |  |  |  |  |  |  |  |
Options |  |  | - |  |  |  | 134 |  |  |  | (0.03 | )
Earnings Per Diluted Share |  |  |  |  |  |  |  |  |  |  |  |
Net Income available to common stockholders plus assumed conversions |  | $ | 70,183 |  |  |  | 18,819 |  |  | $ | 3.73 |
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] |
|  | Fiscal year ended |
|  | September 30, |  |  | September 24, |  |  | September 26, |
|  | 2017 |  |  | 2016 |  |  | 2015 |
|  | (in thousands) |
Stock options |  | $ | (436 | ) |  | $ | 86 |  |  | $ | 1,098 |
Stock purchase plan |  |  | 363 |  |  |  | 305 |  |  |  | 328 |
Stock issued to an outside director |  |  | 56 |  |  |  | - |  |  |  | - |
Restricted stock issued to employees |  |  | 4 |  |  |  | 4 |  |  |  | 6 |
Total share-based compensation |  | $ | (13 | ) |  | $ | 395 |  |  | $ | 1,432 |
The above compensation is net of tax benefits |  | $ | 3,061 |  |  | $ | 1,980 |  |  | $ | 734 |

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- Definition Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate. + 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 1 -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5047-113901 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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