Note A - Basis of Presentation (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Derivative, Gain (Loss) on Derivative, Net	$ 430	$ 2,754
Reclassified from Other income (loss) to Gain (loss) on Economic Hedges of Risk [Member]
Derivative, Gain (Loss) on Derivative, Net	$ 2,800