EARNINGS PER SHARE (Details) - USD ($)	3 Months Ended						9 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2019	Dec. 31, 2018
Basic EPS:
Net (loss) income	$ (319,770)	$ (291,021)	$ 220,777	$ 218,022	$ 180,715	$ 164,385	$ (390,014)	$ 563,122
Weighted average shares	29,254,594			28,858,560			29,254,230	28,835,957
Basic (loss) income per share	$ (0.01)			$ 0.01			$ (0.01)	$ 0.02
Diluted EPS:
Net (loss) income	$ (319,770)	$ (291,021)	$ 220,777	$ 218,022	$ 180,715	$ 164,385	$ (390,014)	$ 563,122
Dilutive effect of stock options				1,568,658				1,322,552
Diluted weighted average shares	29,254,594			30,427,218			29,254,230	30,158,509
Net (loss) income per share diluted	$ (0.01)			$ 0.01			$ (0.01)	$ 0.02
Antidilutive securities excluded from computation of earnings per share amount (in shares)	2,967,000			171,000			2,967,000	642,668