INTANGIBLE ASSETS Narrative (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Impairment of intangible assets	$ 1,300
Intangible amortization expense	$ 12,120	$ 11,416	$ 6,113
Weighted average useful life	14 years