Condensed Consolidated Statements of Shareholders' Equity - USD ($)	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Beginning balance, value at Mar. 31, 2020		$ 385,576	$ 19,729,043	$ (14,426,556)	$ 5,688,063
Balance, shares at Mar. 31, 2020		38,557,643
Net loss				(206,804)	(206,804)
Balance at Jun. 30, 2020		$ 385,576	19,729,043	(14,633,360)	5,481,259
Balance, shares at Jun. 30, 2020		38,557,643
Beginning balance, value at Mar. 31, 2021		$ 390,407	19,773,322	(12,254,191)	7,909,538
Balance, shares at Mar. 31, 2021		39,040,748
Net loss				(118,613)	(118,613)
Employee compensation-stock option			5,104		5,104
Exercise of stock options		$ 200	4,600		4,800
Exercise of stock options, shares		20,000
Balance at Jun. 30, 2021		$ 390,607	$ 19,783,026	$ (12,372,804)	$ 7,800,829
Balance, shares at Jun. 30, 2021		39,060,748