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Note E - Convertible Preferred Stock and Share Repurchase Program (Details Textual) - USD ($) |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Jan. 30, 2018 | Dec. 31, 2022 | Sep. 30, 2023 | Sep. 30, 2023 | May 02, 2023 | Jun. 30, 2022
Preferred Stock, Shares Authorized (in shares) |  | 1,000,000 |  |  |  |
Stock Repurchase Program, Authorized Amount |  |  |  |  | $ 6,500,000 |
Common Stock, Par or Stated Value Per Share (in dollars per share) |  | $ 1 | $ 1 | $ 1 |  |
Treasury Stock, Shares, Acquired (in shares) |  |  | 100,000 | 400,000 |  |
Treasury Stock, Value, Acquired, Cost Method |  |  | $ 490,000 | $ 2,370,000 |  |
Preferred Stock [Member] |  |  |  |  |  |
Treasury Stock, Value, Acquired, Cost Method |  |  | (0) | (0) |  |
Common Stock [Member] |  |  |  |  |  |
Treasury Stock, Value, Acquired, Cost Method |  |  | $ (0) | $ (0) |  |
Wipro [Member] |  |  |  |  |  |
Common Stock, Par or Stated Value Per Share (in dollars per share) |  |  |  |  |  | $ 1
Wipro [Member] | Common Stock [Member] |  |  |  |  |  |
Stock Repurchase Program, Number of Shares Authorized to be Repurchased (in shares) |  |  |  |  |  | 100,000
Series A Preferred Stock [Member] |  |  |  |  |  |
Treasury Stock, Shares, Acquired (in shares) |  | 9,926 |  |  |  |
Series A Preferred Stock [Member] | Wipro [Member] |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | 9,926 |  |  |  |  |
Shares Issued, Price Per Share (in dollars per share) | $ 1,000 |  |  |  |  |
Stock Issued During Period, Value, New Issues | $ 9,900,000 |  |  |  |  |
Payments of Stock Issuance Costs | 200,000 |  |  |  |  |
Proceeds from Issuance of Preferred Stock and Preference Stock | $ 9,900,000 |  |  |  |  |
Series A Preferred Stock [Member] | Wipro [Member] | Preferred Stock [Member] |  |  |  |  |  |
Stock Repurchase Program, Number of Shares Authorized to be Repurchased (in shares) |  |  |  |  |  | 9,926
Stock Repurchase Program, Authorized Amount |  |  |  |  |  | $ 9,926,000

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