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 ($)	Dec. 31, 2024	Mar. 31, 2024
Estimated Fair Value	$ 12,051,395	$ 3,154,764
Gross Unrealized Holding Losses	(110,653)	(4,902)
Estimated Fair Value	25,812,127	36,551,534
Gross Unrealized Holding Losses	(307,810)	(991,468)
Estimated Fair Value	37,863,522	39,706,298
Gross Unrealized Holding Losses	(418,463)	(996,370)
US Treasury Securities
Estimated Fair Value	4,686,781
Gross Unrealized Holding Losses	(12,864)
Estimated Fair Value	0
Gross Unrealized Holding Losses	0
Estimated Fair Value	4,686,781
Gross Unrealized Holding Losses	(12,864)
Corporate Bond Securities
Estimated Fair Value	7,364,614	3,154,764
Gross Unrealized Holding Losses	(97,789)	(4,902)
Estimated Fair Value	25,812,127	36,551,534
Gross Unrealized Holding Losses	(307,810)	(991,468)
Estimated Fair Value	33,176,741	39,706,298
Gross Unrealized Holding Losses	$ (405,599)	$ (996,370)

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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