CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net earnings		$ 50,650	$ 39,963	$ 83,197	$ 72,782
Other comprehensive income
Foreign currency translation, net of tax	[1]	32,677	(31,646)	43,901	(14,541)
Pension and postretirement adjustments, net of tax	[2]	1,743	1,520	3,694	3,132
Other comprehensive income (loss), net of tax		34,420	(30,126)	47,595	(11,409)
Comprehensive income		$ 85,070	$ 9,837	$ 130,792	$ 61,373

[1] The tax expense included in other comprehensive income for foreign currency translation adjustments for the three and six months ended June 30, 2017 were $1.1 million and $1.2 million, respectively. The tax benefit included in other comprehensive loss for foreign currency translation adjustments for the three and six months ended June 30, 2016 were $1.3 million and $0.3 million, respectively.

[2] The tax expense included in other comprehensive income for pension and postretirement adjustments for the three and six months ended June 30, 2017 were $1.2 million and $2.5 million, respectively. The tax expense included in other comprehensive income for pension and postretirement adjustments for the three and six months ended June 30, 2016 were $1.1 million and $2.1 million, respectively.