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Note 7 - Stock Options and Other Compensation | 12 Months Ended
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Dec. 31, 2023
Notes to Financial Statements |
Share-Based Payment Arrangement [Text Block] | 7. Stock Options and Other Compensation In May 1989, non-statutory stock options were granted by the Company to four key executive officers for the purchase of shares of common stock. At December 31, 2023 and 2022, options on 767,500 shares were outstanding and exercisable at prices ranging from $1.00 to $1.25. According to their terms, the options have no expiration date.

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