Note H - Derivative Financial Instruments - Change in Accumulated Other Comprehensive Income (Loss), Net of Tax (Details) - USD ($)		3 Months Ended		9 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Balance		$ 80,335,001	$ 65,281,496	$ 65,339,976	$ 66,865,367
Other comprehensive loss, net of income, before reclassification					2,971,332
Total loss reclassified from AOCI (1)	[1]				(313,409)
Net current period other comprehensive income		13,795,418	2,657,923	4,329,266	2,657,923
Balance		91,056,681	69,352,898	91,056,681	69,352,898
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Balance				(11,187,841)	0
Other comprehensive loss, net of income, before reclassification				(5,012,675)
Total loss reclassified from AOCI (1)	[2]			9,341,941
Net current period other comprehensive income				4,329,266
Balance		$ (6,858,575)	$ 2,657,923	$ (6,858,575)	$ 2,657,923

[1] The gain reclassified from AOCI is presented net of taxes of $83,311 which are included in provision for (benefit from) income taxes on the Company's Consolidated Statement of Operations for the three and nine months ended December 31, 2020.

[2] The loss reclassified from AOCI is presented net of tax benefit of $2,976,019 which are included in provision for (benefit from) income taxes on the Company's Consolidated Statement of Operations for the three and nine months ended December 31, 2021.