Note P - Income Taxes (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Tax Expense (Benefit), Total	$ 734,609	$ 4,314,700	$ 4,207,693	$ 7,271,580
Effective Income Tax Rate Reconciliation, Percent, Total			23.60%	22.90%