AMORTIZATION OF INTANGIBLE ASSETS Values Assigned to Intangible Assets (Other Than Goodwill) for Acquisitions (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized Intangible Assets, Gross Book Value	$ 31,535
Amortized Intangible Assets, Accumulated Amortization	(6,785)
Amortized Intangible Assets, Net Book Value	24,750	$ 7,871
Customer relationships and contracts
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized Intangible Assets, Gross Book Value	29,373
Amortized Intangible Assets, Accumulated Amortization	(6,305)
Amortized Intangible Assets, Net Book Value	23,068
Software technology and other
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized Intangible Assets, Gross Book Value	2,162
Amortized Intangible Assets, Accumulated Amortization	(480)
Amortized Intangible Assets, Net Book Value	$ 1,682