CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 37,835	$ 35,834	$ 110,668	$ 107,845
Other comprehensive income (loss):
Net unrealized losses on available for sale securities, net of tax effects of ($8) and $1 for the three and nine months ended March 31, 2017	0	16	0	(1)
Foreign currency translation adjustments	924	86	2,398	(2,534)
Total other comprehensive income (loss)	924	102	2,398	(2,535)
Comprehensive income	$ 38,759	$ 35,936	$ 113,066	$ 105,310