ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Reclass) (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Earnings before income taxes		$ 41,162	$ 47,564
Income tax		(8,615)	(14,745)
Net earnings		32,547	$ 32,819
Reclassification out of Accumulated Other Comprehensive Income [Member] | Total Pension and Postretirment Adjustments, Net [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amortization of prior service costs	[1]	190
Amortization of actuarial losses	[1]	(3,531)
Earnings before income taxes		(3,341)
Income tax		1,242
Net earnings		$ (2,099)

[1] These items are included in the computation of net periodic pension cost. See Note 8, Pension and Other Postretirement Benefit Plans.