CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net earnings		$ 31,018	$ 80,072	$ 82,779	$ 135,665
Other comprehensive income
Foreign currency translation, net of tax	[1]	24,185	540	(26,090)	8,782
Pension and postretirement adjustments, net of tax	[2]	4,002	1,749	8,683	3,432
Other comprehensive income (loss), net of tax		28,187	2,289	(17,407)	12,214
Comprehensive income		$ 59,205	$ 82,361	$ 65,372	$ 147,879

[1] The tax benefit included in other comprehensive income (loss) for foreign currency translation adjustments for the three and six months ended June 30, 2020 and June 30, 2019 was immaterial.

[2] The tax expense included in other comprehensive income for pension and postretirement adjustments for the three and six months ended June 30, 2020 was $1.3 million and $2.7 million, respectively. The tax expense included in other comprehensive income for pension and postretirement adjustments for the three and six months ended June 30, 2019 was $0.6 million and $1.1 million, respectively.