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, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2021
Balance		$ 102,715,030	$ 62,942,275	$ 79,686,648		$ 65,339,976
Other comprehensive income, net of income, before reclassification					$ (15,178,284)
Total loss reclassified from AOCI (1)	[1]				5,712,132
Net current period other comprehensive income		1,578,033	4,227,185	8,752,150	(9,466,152)	(9,466,152)
Balance		106,689,752	80,335,001	106,689,752	80,335,001	80,335,001
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Balance				(10,268,509)	(11,187,841)
Other comprehensive income, net of income, before reclassification				7,146,966
Total loss reclassified from AOCI (1)	[2]			1,605,184
Net current period other comprehensive income				8,752,150
Balance		$ (1,516,359)	$ (20,653,993)	$ (1,516,359)	$ (20,653,993)	$ (20,653,993)

[1] The loss reclassified from AOCI is presented net of tax benefits of $1,819,688 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, 2021.

[2] The loss reclassified from AOCI is presented net of tax benefits of $511,356 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.