NOTE 5. MARKETABLE SECURITIES: Gross unrealized holding losses and estimated fair value of marketable securities for which an allowance for credit losses has not been recorded (Details) - USD ($)	Jun. 30, 2025	Mar. 31, 2025
Estimated Fair Value	$ 13,470,630	$ 7,323,059
Gross Unrealized Holding Losses	(42,269)	(31,808)
Estimated Fair Value	16,117,601	21,020,717
Gross Unrealized Holding Losses	(64,779)	(127,344)
Estimated Fair Value	29,588,231	28,343,776
Gross Unrealized Holding Losses	(107,048)	(159,152)
Corporate Bond Securities
Estimated Fair Value	13,470,630	7,323,059
Gross Unrealized Holding Losses	(42,269)	(31,808)
Estimated Fair Value	16,117,601	21,020,717
Gross Unrealized Holding Losses	(64,779)	(127,344)
Estimated Fair Value	29,588,231	28,343,776
Gross Unrealized Holding Losses	$ (107,048)	$ (159,152)

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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