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Note M - Stockholders' Equity (Details Textual) - USD ($) |  |  |  | 6 Months Ended | 12 Months Ended | 30 Months Ended | 180 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 01, 2017 | Mar. 27, 2015 | Mar. 10, 2015 | Sep. 24, 2017 | Sep. 25, 2016 | Mar. 31, 2019 | Sep. 24, 2017 | Sep. 25, 2016 | Jan. 04, 2018 | Jun. 05, 2013
Common Stock, Dividends, Per Share, Declared |  |  | $ 25 |  |  |  |  |  |  |
Payments of Ordinary Dividends, Common Stock |  | $ 115,100,000 |  | $ 125,000 | $ 125,000 |  | $ 875,000 |  |  |
Dividends Payable |  | $ 1,000,000 |  |  |  |  |  |  |  |
Minimum Percentage of Common Stock Acquired by a Person or Group which Triggers Exercise of New Rights |  |  |  |  |  |  |  |  |  | 15.00%
New Right Purchase Price |  |  |  |  |  |  |  |  |  | $ 100
Common Stock, Capital Shares Reserved for Future Issuance |  |  |  | 6,271,192 |  |  | 6,271,192 |  |  | 10,188,600
Treasury Stock, Shares, Acquired |  |  |  | 0 |  |  |  | 5,127,373 |  |
Treasury Stock, Value, Acquired, Cost Method |  |  |  |  |  |  |  | $ 77,303,000 |  |
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased |  |  |  | 260,258 |  |  | 260,258 |  |  |
Dividends Payable, Date of Record |  |  | Mar. 20, 2015 |  |  |  |  |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |
Common Stock, Dividends, Per Share, Declared | $ 5 |  |  |  |  |  |  |  |  |
Dividends, Common Stock, Cash | $ 20,900,000 |  |  |  |  |  |  |  |  |
Dividends Payable, Date of Record | Dec. 22, 2017 |  |  |  |  |  |  |  |  |
Dividends Payable, Date to be Paid | Jan. 04, 2018 |  |  |  |  |  |  |  |  |
Scenario, Forecast [Member] |  |  |  |  |  |  |  |  |  |
Payments of Ordinary Dividends, Common Stock |  |  |  |  |  | $ 125,000 |  |  |  |
Dividends Payable |  |  |  |  |  |  |  |  | $ 25,000 |

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- Definition Aggregate number of common shares reserved for future issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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