SEGMENT INFORMATION (Reconciliation) (Detail) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Segment Reporting [Abstract]
Total operating income	$ 72,045	$ 64,498
Interest expense	(7,272)	(8,204)
Other income, net	5,478	4,683
Earnings before income taxes	$ 70,251	$ 60,977

Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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Amount of the cost of borrowed funds accounted for as interest expense.

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- Definition

The net result for the period of deducting operating expenses from operating revenues.

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Amount of income (expense) related to nonoperating activities, classified as other.

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