INCOME TAXES (Schedule of Income Tax Provision) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current:
Federal	$ 25,785	$ 0	$ (10)
State	5,069	35	370
Foreign	354	86	1,010
Current income tax provision	31,208	121	1,370
Deferred:
Federal	(28)	106	3,505
State	15	13	6,245
Foreign	296	1,145	842
Deferred income tax provision	283	1,264	10,592
Total provision for income taxes	$ 31,491	$ 1,385	$ 11,962