Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Statement Of Income And Comprehensive Income [Abstract]
Net earnings	$ 23,903	$ 18,991	$ 40,197	$ 36,205
Other comprehensive income (loss):
Foreign currency translation adjustments	(14,565)	(5,411)	(15,147)	(13,562)
Pension adjustment, net of taxes of $137 and $85 for the three and six months ended December 31, 2016, respectively, and $4 and $14 for the three and six months ended December 31, 2015, respectively	424	13	312	49
Comprehensive income	$ 9,762	$ 13,593	$ 25,362	$ 22,692