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NOTE 5. MARKETABLE SECURITIES: Estimated fair value of marketable securities aggregated by fair value hierarchy inputs used in estimating their fair values (Details) - USD ($)	Sep. 30, 2024	Mar. 31, 2024
Marketable Securities	$ 50,771,653	$ 52,548,876
Money Market Funds
Marketable Securities	2,653,557	9,842,796
Corporate Bond Securities
Marketable Securities	48,118,096	42,706,080
Fair Value, Inputs, Level 1
Marketable Securities	2,653,557	9,842,796
Fair Value, Inputs, Level 1 | Money Market Funds
Marketable Securities	2,653,557	9,842,796
Fair Value, Inputs, Level 1 | Corporate Bond Securities
Marketable Securities	0	0
Fair Value, Inputs, Level 2
Marketable Securities	48,118,096	42,706,080
Fair Value, Inputs, Level 2 | Money Market Funds
Marketable Securities	0	0
Fair Value, Inputs, Level 2 | Corporate Bond Securities
Marketable Securities	$ 48,118,096	$ 42,706,080

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- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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