NOTE 5. MARKETABLE SECURITIES: Unrealized losses on marketable securities and their tax effects (Details) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Details
Unrealized loss from marketable securities	$ 870,990	$ (68,597)	$ 907,741	$ (369,034)
Tax effects	(190,573)	15,009	(198,614)	80,745
Unrealized loss from marketable securities, net of tax	$ 680,417	$ (53,588)	$ 709,127	$ (288,289)