NOTE 4. NET INCOME PER SHARE: Schedule of Earnings Per Share, Basic and Diluted (Details) - shares	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Details
Weighted Average Number of Shares Outstanding, Basic	4,833,401	4,830,826	4,832,992	4,830,826
Dilutive effect of stock options	3,829	1,542	6,733	342
Shares used in computing net income per share - diluted	4,837,230	4,832,368	4,839,725	4,831,168