STOCK-BASED COMPENSATION (Equity Based Compensation Schedule) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Allocation of stock-based compensation expense
Stock compensation expense	$ 5,806,000	$ 5,262,000
Research and development
Allocation of stock-based compensation expense
Stock compensation expense	2,823,000	2,556,000
Sales, marketing and administration
Allocation of stock-based compensation expense
Stock compensation expense	$ 2,983,000	$ 2,706,000