7. BASIC AND FULLY DILUTED NET INCOME PER COMMON SHARE (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Numerator:
Net income (loss)	$ (1,623,527)	$ 1,540,965
Weighted average common shares:
Denominator for basic calculation	50,351,971	48,713,163
Weighted average effects of potentially diluted common stock:
Stock options (calculated under treasury method)	0	1,824,903
Unvested restricted stock grants	0	4,150,000
Denominator for fully diluted calculation	50,351,971	54,688,066
Basic	$ (0.03)	$ 0.03
Fully diluted	$ (0.03)	$ 0.03