NOTE 5. MARKETABLE SECURITIES: Amortized cost, fair value and gross unrealized holding gains and losses of marketable securities (Details) - USD ($)	Jun. 30, 2024	Mar. 31, 2024
Amortized Cost	$ 53,910,279	$ 53,544,316
Gross Unrealized Holding Gains	0	930
Gross Unrealized Holding Losses	(958,688)	(996,370)
Marketable Securities	52,951,591	52,548,876
Money Market Funds
Amortized Cost	5,775,400	9,842,796
Gross Unrealized Holding Gains	0	0
Gross Unrealized Holding Losses	0	0
Marketable Securities	5,775,400	9,842,796
Corporate Bond Securities
Amortized Cost	48,134,879	43,701,520
Gross Unrealized Holding Gains	0	930
Gross Unrealized Holding Losses	(958,688)	(996,370)
Marketable Securities	$ 47,176,191	$ 42,706,080