SCHEDULE OF STOCK-BASED COMPENSATION EXPENSE (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Total stock-based compensation expense	$ 5,287	$ 3,935
Research and Development [Member]
Total stock-based compensation expense	1,088	796
General and Administrative [Member]
Total stock-based compensation expense	4,143	3,080
Cost of Revenues [Member]
Total stock-based compensation expense	$ 56	$ 59