Note L - Income Taxes (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Income Tax Expense (Benefit), Total	$ (264,550)	$ 216,094	$ (678,043)	$ 2,023,422
Effective Income Tax Rate Reconciliation, Percent, Total			23.30%	24.40%