INCOME TAXES (Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of period	$ 66	$ 62	$ 200
Increases in tax positions in current year	240	4	0
Increases in tax positions in prior year	459	0	0
Decreases due to settlement	(66)	0	(138)
Balance at end of period	$ 699	$ 66	$ 62