CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 11,335	$ 4,820
Other comprehensive income:
Foreign currency translation adjustments	2,050	1,042
Change in fair value of interest rate swaps	31	(5)
Comprehensive income	$ 13,416	$ 5,857