CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net earnings		$ 59,469	$ 51,761
Other comprehensive income
Foreign currency translation, net of tax	[1]	(3,960)	(50,275)
Pension and postretirement adjustments, net of tax	[2]	5,600	4,681
Other comprehensive income (loss), net of tax		1,640	(45,594)
Comprehensive income		$ 61,109	$ 6,167

[1] The tax benefit (expense) included in foreign currency translation adjustments for the three months ended March 31, 2021 and 2020 was immaterial.

[2] The tax expense included in pension and postretirement adjustments for the three months ended March 31, 2021 and 2020 was $1.7 million and $1.3 million, respectively.