INTANGIBLE ASSETS Values Assigned to Intangible Assets (Other Than Goodwill) for Acquisitions (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Book Value	$ 56,700	$ 68,675
Accumulated Amortization	(13,096)	(11,630)
Net Book Value	43,604	57,045
Customer Relationships and Contracts
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Book Value	56,700	66,513
Accumulated Amortization	(13,096)	(11,039)
Net Book Value	$ 43,604	55,474
Software Technology and Other
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Book Value		2,162
Accumulated Amortization		(591)
Net Book Value		$ 1,571