CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net earnings		$ 69,703	$ 64,620	$ 190,580	$ 147,399
Other comprehensive income
Foreign currency translation, net of tax	[1]	(16,273)	28,229	(12,990)	2,139
Pension and postretirement adjustments, net of tax	[2]	4,994	3,561	15,036	12,244
Other comprehensive income (loss), net of tax		(11,279)	31,790	2,046	14,383
Comprehensive income		$ 58,424	$ 96,410	$ 192,626	$ 161,782

[1] The tax benefit included in foreign currency translation adjustments for the three and nine months ended September 30, 2021 and September 30, 2020 was immaterial.

[2] The tax expense included in pension and postretirement adjustments for the three and nine months ended September 30, 2021 was $2.0 million and $5.1 million, respectively. The tax expense included in pension and postretirement adjustments for the three and nine months ended September 30, 2020 was $1.3 million and $4.0 million, respectively.