NET (LOSS) INCOME PER SHARE COMPUTATIONS (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
NET (LOSS) INCOME PER SHARE COMPUTATIONS
Net (loss) income (numerator) amounts used for basic and diluted per share computations:	$ (1,181,197)	$ 957,757	$ (925,976)	$ 1,014,329
Weighted average shares (denominator) of common stock outstanding:
Basic	4,679,122	4,586,734	4,669,350	4,573,106
Plus dilutive effect of stock options		8,982	3,097	15,221
Diluted	4,679,122	4,595,716	4,672,447	4,588,327
Net (loss) income per common share:
Basic	$ (0.25)	$ 0.21	$ (0.20)	$ 0.22
Diluted	$ (0.25)	$ 0.21	$ (0.20)	$ 0.22