Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Total
Beginning balance, value at Mar. 31, 2020	$ 1,053,583	$ 7,339,351	$ 317,429	$ (346,001)	$ 8,364,362
Net income (loss)			(299,670)		(299,670)
Stock based compensation		14,005			14,005
Ending balance, value at Jun. 30, 2020	1,053,583	7,353,356	17,759	(346,001)	8,078,697
Beginning balance, value at Mar. 31, 2021	1,071,833	7,624,214	473,361	(346,001)	$ 8,823,407
Beginning balance, shares at Mar. 31, 2021					2,143,666
Beginning balance, held in treasury, shares at Mar. 31, 2021					(67,000)
Net income (loss)			395,006		$ 395,006
Issuance of stock through options exercised	2,500	31,500			34,000
Stock based compensation		13,865			$ 13,865
Common stock shares, issued					5,000
Common stock shares, held in treasury, Acquisitions, shares
Ending balance, value at Jun. 30, 2021	$ 1,074,333	$ 7,669,579	$ 868,367	$ (346,001)	$ 9,266,278
Ending balance, shares at Jun. 30, 2021					2,148,666
Ending balance, held in treasury, shares at Jun. 30, 2021					(67,000)
Common stock shares, outstanding at Jun. 30, 2021					2,081,666