CONTRACT BALANCES (Changes in Deferred Revenue) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2018 USD ($)
Change in Contract with Customer, Liability [Roll Forward]
Balance, beginning of period	$ 3,469	[1]
Less: Recognition of deferred revenue from beginning balance	(3,132)
Add: Net increase in current period contract liabilities	3,055
Balance, end of period	$ 3,392

[1] As of January 1, 2018, the Company adopted Accounting Standards Update 2014-09, "Revenue from Contracts with Customers (Topic 606)" ("ASC 606"), using the full retrospective method. Accordingly, the Company has recast certain amounts in the prior period presented. See Note 1 below for additional discussion.