INCOME TAXES (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
INCOME TAXES [Abstract]
Provision for income taxes	$ 144	$ 50	$ 194	$ 100
Effective income tax rate	4.90%	1.20%	2.30%	0.90%