INCOME TAXES (Unrecognized Tax Benefits) (Detail) - 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]
Unrecognized tax benefits (beginning balance)	$ 11,454	$ 12,414	$ 11,560
Additions for tax positions of prior periods	1,069	32	359
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	(194)	(1,679)
Additions for tax positions related to the current year	1,273	789	2,026
Settlements	(428)	(102)	(1,414)
Unrecognized tax benefits (ending balance)	$ 13,174	$ 11,454	12,414
Unrecognized Tax Benefits, Decrease Resulting from Foreign Currency Translation			$ (117)