NOTE 3. FAIR VALUE OF FINANCIAL INSTRUMENTS: Gross unrealized holding losses and fair value of available-for-sale securities with unrealized holding losses (Details) - USD ($)	Mar. 31, 2023	Mar. 31, 2022
Estimated Fair Value	$ 37,084,628	$ 6,306,750
Gross Unrealized Holding Losses	(590,967)	(23,727)
Estimated Fair Value	13,294,817	9,738,338
Gross Unrealized Holding Losses	(963,879)	(613,578)
Estimated Fair Value	50,379,445	16,045,088
Gross Unrealized Holding Losses	(1,554,846)	(637,305)
Corporate Bond Securities
Estimated Fair Value	37,084,628	6,306,750
Gross Unrealized Holding Losses	(590,967)	(23,727)
Estimated Fair Value	13,294,817	9,738,338
Gross Unrealized Holding Losses	(963,879)	(613,578)
Estimated Fair Value	50,379,445	16,045,088
Gross Unrealized Holding Losses	$ (1,554,846)	$ (637,305)

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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