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Note G - Dividend Payment (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jul. 14, 2025
Apr. 14, 2025
Jan. 13, 2025
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Common Stock, Dividends, Per Share, Cash Paid   $ 0.15 $ 0.15        
Dividends, Common Stock, Cash   $ 2,100 $ 2,100 $ 2,075 $ 2,079 $ 4,136 $ 4,142
Subsequent Event [Member]              
Common Stock, Dividends, Per Share, Cash Paid $ 0.15            
Dividends, Common Stock, Cash $ 2,100