NOTE 5. MARKETABLE SECURITIES: Contractual maturities of marketable securities (Details) - USD ($)	Sep. 30, 2024	Mar. 31, 2024
Marketable Securities	$ 50,771,653	$ 52,548,876
(1 Year	22,489,850
1-3 Years	20,219,709
3-5 Years	8,062,094
Money Market Funds
Marketable Securities	2,653,557	9,842,796
(1 Year	2,653,557
1-3 Years	0
3-5 Years	0
Corporate Bond Securities
Marketable Securities	48,118,096	$ 42,706,080
(1 Year	19,836,293
1-3 Years	20,219,709
3-5 Years	$ 8,062,094