Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Statement Of Income And Comprehensive Income [Abstract]
Net earnings	$ 14,938	$ 14,508	$ 51,143	$ 48,906
Other comprehensive income (loss):
Foreign currency translation adjustments	4,553	(7,343)	(9,009)	(11,509)
Pension adjustment, net of taxes of ($5) and $9 for the three and nine months ended March 31, 2016, respectively, and ($6) and $101 for the three and nine months ended March 31, 2015, respectively	(17)	22	32	(380)
Comprehensive income	$ 19,474	$ 7,187	$ 42,166	$ 37,017