CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 67,977	$ 78,833
Other comprehensive income (loss):
Foreign currency translation adjustment	(5,308)	(1,995)
Change in fair value of interest rate swap agreements, net of tax	(4,964)	217
Other comprehensive loss, net of tax	(10,272)	(1,778)
Comprehensive income	$ 57,705	$ 77,055