Note H - Derivative Financial Instruments - Change in Accumulated Other Comprehensive Income (Loss), Net of Tax (Details) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023		Sep. 30, 2022
Balance	$ 123,369,000	$ 102,715,000	$ 115,432,000		$ 79,686,000
Net current period other comprehensive income	0	1,578,000	317,000		8,752,000
Balance	126,809,000	106,690,000	126,809,000		106,690,000
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Balance			(317,000)		(10,269,000)
Other comprehensive income, net of loss, before reclassification			0		7,147
Total loss reclassified from AOCI (1)			317,000	[1]	1,606,000	[2]
Net current period other comprehensive income			317,000		8,753,000
Balance	$ 0	$ (1,516,000)	$ 0		$ (1,516,000)

[1] The loss reclassified from AOCI is presented net of tax benefits of approximately $0.1 million which are included in the provision for (benefit from) income taxes on the Company's Consolidated Statement of Operations for the six months ended September 30, 2023.

[2] The loss reclassified from AOCI is presented net of tax benefits of approximately $0.5 million which are included in the provision for (benefit from) income taxes on the Company's Consolidated Statement of Operations for the six months ended September 30, 2022.