Note G - Dividend Payment (Details Textual) - USD ($) $ / shares in Units, $ in Thousands			4 Months Ended		6 Months Ended
	Jun. 07, 2022	Mar. 21, 2021	Jul. 09, 2022	Jul. 10, 2021	Jul. 09, 2022	Jul. 10, 2021
Common Stock, Dividends, Per Share, Cash Paid (in dollars per share)	$ 0.15	$ 0.15
Dividends, Common Stock, Cash	$ 2,000	$ 2,000	$ 2,038	$ 1,937	$ 4,076	$ 3,887