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Capital Stock (Details Narrative) - $ / shares | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Class of Stock [Line Items] |  |
Preferred stock, par value | $ 1.00 | $ 1.00
Preferred stock, shares authorized | 5,000,000 | 5,000,000
Preferred stock, shares issued | 0 | 0
Common stock voting rights | Class C shares have 10 votes per share on all matters except for the election of one third of the directors who are elected solely by the Class A shares |
Stockholders dividends descriptions | Stockholders of both Class A and Class C common stock have received 5% stock dividends in the years 1990 through 2019, a 7.5% stock dividend in the year 2020, and a 5% stock dividend in the years 2021 through 2023, as authorized by the Company’s Board of Directors |
Share-Based Payment Arrangement, Option [Member] |  |
Class of Stock [Line Items] |  |
Antidilutive securities excluded from computation of earnings per share, amount |  | 339,150
Common Class B [Member] |  |
Class of Stock [Line Items] |  |
Common stock, par value | $ 1.00 | $ 1.00
Common stock, shares authorized | 5,000,000 | 5,000,000
Common stock, shares, issued | 0 | 0

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