INCOME TAXES (Details 5) - 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 year	$ 1,847	$ 2,305	$ 2,342
Additions for tax positions related to current year	282	302	282
Additions for tax positions of prior years	253	72	263
Reductions for tax positions of prior years	(518)	(832)	0
Reductions due to lapse of applicable statues of limitations	(719)	0	(582)
Balance at end of year	$ 1,145	$ 1,847	$ 2,305