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Note F - Common Stock and Warrants - Common Stock Activity (Details) - shares
3 Months Ended 6 Months Ended
Jun. 30, 2022
Mar. 31, 2022
Jun. 30, 2022
Balance (in shares) 34,423,497 35,005,640 35,005,640
Common stock issued as compensation to third-parties (in shares) 11,030 7,649  
Common stock repurchased as a result of the Stock Repurchase Plan (in shares)   (589,792)  
Common stock issued as compensation to third-parties (in shares) 11,030 7,649  
Common stock issued as a result of the Employee Stock Purchase Plan (in shares) 54,787   54,787
Balance (in shares) 34,489,314 34,423,497 34,489,314