CONTRACT BALANCES (Changes in Deferred Revenue) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2020 USD ($)
Change in Contract with Customer, Liability [Roll Forward]
Balance, beginning of period	$ 4,315
Less: recognition of deferred revenue from beginning balance	(3,416)
Add: net increase in current period contract liabilities	3,019
Balance, end of period	$ 3,918