Note G - Treasury Stock (Details Textual) - USD ($) |
3 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Dec. 31, 2025 |
Jul. 01, 2023 |
|
| Treasury Stock, Shares, Acquired (in shares) | 1,171 | ||
| Treasury Stock, Value, Acquired, Cost Method | $ 11,300 | ||
| Share Repurchase Program, Remaining Authorized, Number of Shares (in shares) | 472,845 | ||
| Treasury Stock, Common, Shares (in shares) | 1,452,757 | 1,451,586 | |
| Treasury Stock, Common, Value | $ 28,935,000 | $ 28,924,000 | |
| September 2011 Reauthorization [Member] | |||
| Stock Repurchase Program, Number of Shares Authorized to be Repurchased (in shares) | 500,000 |
| X | ||||||||||
- Definition Number of shares authorized to be purchased under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Number of shares remaining authorized to be purchased under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Number of previously issued common shares repurchased by the issuing entity and held in treasury. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount allocated to previously issued common shares repurchased by the issuing entity and held in treasury. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Number of shares that have been repurchased during the period and are being held in treasury. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Details
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