CAPITAL STOCK and EARNINGS PER SHARE (Details) - USD ($)	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Basic EPS:
Net (loss) income	$ (341,569)	$ 1,100,676
Weighted average shares	29,258,692	28,878,780
Net (loss) income per share	$ (0.01)	$ 0.04
Diluted EPS:
Net (loss) income	$ (341,569)	$ 1,100,676
Dilutive effect of stock options		1,414,890
Weighted average shares	29,258,692	30,293,670
Net (loss) income per share	$ (0.01)	$ 0.04
Antidilutive securities excluded from computation of earnings per share amount (in shares)	2,966,000	221,000