9. STOCK COMPENSATION (Details - Stock compensation) - USD ($)	3 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Share-based Payment Arrangement [Abstract]
Vesting of stock options and RSUs	$ 326,536	$ 263,162
Total stock-based compensation expense	$ 326,536	$ 263,162
Weighted average number of common shares outstanding- basic and diluted	19,057,255	17,754,728
Basic and diluted loss per common share attributable to stock-based compensation expense	$ (0.02)	$ (0.01)