ACQUISITIONS, DIVESTITURES, AND ASSETS HELD FOR SALE - Purchase Price Allocation (Detail) $ in Thousands	Sep. 30, 2017 USD ($)
Business Acquisition [Line Items]
Fixed assets	$ 2,055
Intangibles	23,301
Goodwill	9,245
Other assets and liabilities, net	730
Net deferred tax liabilities	(3,670)
Total purchase price allocation	31,661
Current Period Acquisitions
Business Acquisition [Line Items]
Fixed assets	2,967
Intangibles	15,495
Goodwill	23,747
Other assets and liabilities, net	730
Net deferred tax liabilities	(314)
Total purchase price allocation	42,625
Adjustments to Prior Year Acquisitions
Business Acquisition [Line Items]
Fixed assets	(912)
Intangibles	7,806
Goodwill	(14,502)
Net deferred tax liabilities	(3,356)
Total purchase price allocation	$ (10,964)