Note G - Dividend Payment (Details Textual) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended	4 Months Ended	6 Months Ended
	Jun. 19, 2023	Mar. 20, 2023	Jun. 30, 2023	Jul. 09, 2022	Jun. 30, 2023	Jul. 09, 2022
Common Stock, Dividends, Per Share, Cash Paid	$ 0.15	$ 0.15
Dividends, Common Stock, Cash	$ 2,100	$ 2,100	$ 2,061	$ 2,038	$ 4,120	$ 4,076