INCOME TAXES (Schedule of Uncertain Tax Benefits Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Reconciliation of Uncertain Tax Benefits [Roll Forward]
Balance, beginning of year	$ 754	$ 1,085	$ 959
Gross increases:
Current year tax positions	402	0	0
Prior years' tax positions	0	380	541
Gross decreases:
Prior years' tax positions	(777)	(546)	0
Settlements	0	0	0
Statute of limitations lapses	(17)	(131)	(404)
Other	62	(34)	(11)
Balance, end of year	$ 424	$ 754	$ 1,085