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NOTE 5. MARKETABLE SECURITIES: Fair values of our marketable securities aggregated by credit rating (Details) - USD ($)	Sep. 30, 2025	Mar. 31, 2025
Marketable Securities	$ 45,226,523	$ 47,901,258
Standard & Poor's, AAA Rating
Marketable Securities	9,469,808
Standard & Poor's, AA+ Rating
Marketable Securities	3,956,140
Standard & Poor's, AA Rating
Marketable Securities	4,912,125
Standard & Poor's, AA- Rating
Marketable Securities	13,771,565
Standard & Poor's, A+ Rating
Marketable Securities	$ 13,116,885

X

- 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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