PROPERTY AND EQUIPMENT Narrative (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Property, Plant and Equipment [Line Items]
Depreciation expense charged to operations	$ 2.5	$ 1.5	$ 6.2	$ 5.0