SEGMENT INFORMATION (Reconciliation) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Segment Reporting [Abstract]
Total operating income	$ 96,550	$ 76,573	$ 231,048	$ 201,925
Interest expense	(10,457)	(10,488)	(31,584)	(30,694)
Other income, net	321	483	823	818
Earnings before income taxes	$ 86,414	$ 66,568	$ 200,287	$ 172,049