CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net earnings		$ 187,329	$ 145,461	$ 113,338
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract]
Foreign currency translation, net of tax	[1]	(64,840)	(87,527)	(79,386)
Pension and postretirement adjustments, net of tax	[2]	(988)	(9,990)	(74,284)
Other Comprehensive Income (Loss), Net of Tax		(65,828)	(97,517)	(153,670)
Comprehensive Income		$ 121,501	$ 47,944	$ (40,332)

[1] The tax benefit included in other comprehensive income (loss) for foreign currency translation adjustments for 2016, 2015, and 2014 were $1.7 million, $2.7 million, and $2.1 million, respectively.

[2] The tax benefit (expense) included in other comprehensive income (loss) for pension and postretirement adjustments for 2016, 2015, and 2014 were ($1.7) million, $9.5 million, and $41.3 million, respectively.