NOTE 3. MARKETABLE SECURITIES: Available-for-Sale Securities (Details) - USD ($)	Mar. 31, 2024	Mar. 31, 2023
Available for Sale Securities, Amortized Cost	$ 53,544,316	$ 54,098,122
Available for Sale Securities, Gross Unrealized Holding Gains	930	1,007
Available for Sale Securities, Gross Unrealized Holding Losses	(996,370)	(1,554,846)
Available for Sale Securities, Estimated Fair Value	52,548,876	52,544,283
Money Market Funds
Available for Sale Securities, Amortized Cost	9,842,796	906,141
Available for Sale Securities, Gross Unrealized Holding Gains	0	0
Available for Sale Securities, Gross Unrealized Holding Losses	0	0
Available for Sale Securities, Estimated Fair Value	9,842,796	906,141
Corporate Bond Securities
Available for Sale Securities, Amortized Cost	43,701,520	53,191,981
Available for Sale Securities, Gross Unrealized Holding Gains	930	1,007
Available for Sale Securities, Gross Unrealized Holding Losses	(996,370)	(1,554,846)
Available for Sale Securities, Estimated Fair Value	$ 42,706,080	$ 51,638,142