AMORTIZATION OF INTANGIBLE ASSETS Values Assigned to Intangible Assets (Other Than Goodwill) for Acquisitions (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized Intangible Assets, Gross Book Value	$ 28,999
Amortized Intangible Assets, Accumulated Amortization	(19,478)
Amortized Intangible Assets, Net Book Value	9,521	$ 10,957
Customer Relationships and Contracts
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized Intangible Assets, Gross Book Value	26,837
Amortized Intangible Assets, Accumulated Amortization	(19,441)
Amortized Intangible Assets, Net Book Value	7,396
Software Technology and Other
Acquired Finite-Lived Intangible Assets [Line Items]
Amortized Intangible Assets, Gross Book Value	2,162
Amortized Intangible Assets, Accumulated Amortization	(37)
Amortized Intangible Assets, Net Book Value	$ 2,125