CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net earnings		$ 40,685	$ 59,469
Other comprehensive income
Foreign currency translation, net of tax	[1]	(6,825)	(3,960)
Pension and postretirement adjustments, net of tax	[2]	5,766	5,600
Other comprehensive income (loss), net of tax		(1,059)	1,640
Comprehensive income		$ 39,626	$ 61,109

[1] The tax benefit included in foreign currency translation adjustments for the three months ended March 31, 2022 and 2021 was immaterial.

[2] The tax expense included in pension and postretirement adjustments for the three months ended March 31, 2022 and 2021 was $1.4 million and $1.7 million, respectively.