REVENUE (Narrative) (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($) method	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) method	Jun. 30, 2017 USD ($)
Revenue from Contract with Customer [Abstract]
Number of sales categories | method	2		2
Contract duration			1 year
Retail estate sales, deposit required	5.00%		5.00%
Contract balances, recognized during period | $	$ 5,429	$ 3,809	$ 11,800	$ 8,592