Condensed Consolidated Statements of Comprehensive Loss - 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 loss	$ (30,763)	$ (13,694)	$ (62,513)	$ (34,452)
Other comprehensive income (loss):
Foreign currency translation adjustment, net of tax	392	149	957	(446)
Available-for-sale securities:
Unrealized gain (loss) on available-for-sale securities, net of tax	(353)	61	(566)	(376)
Reclassification adjustments for gain (loss) on available-for-sale securities recognized, net of tax	46	13	52	3
Net increase (decrease) from available-for-sale securities, net of tax	(307)	74	(514)	(373)
Other comprehensive income (loss), net of tax	85	223	443	(819)
Comprehensive loss	$ (30,678)	$ (13,471)	$ (62,070)	$ (35,271)