Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net loss	$ (89,118)	$ (47,262)	$ (35,321)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment, net of tax	542	188	(512)
Available for sale securities:
Unrealized gain (loss) on available-for-sale securities, net of tax	(465)	(360)	272
Reclassification adjustments for gain on available-for-sale securities recognized, net of tax	5	5	13
Net increase (decrease) from available-for-sale securities, net of tax	(460)	(355)	285
Other comprehensive income (loss), net of tax	82	(167)	(227)
Comprehensive loss	$ (89,036)	$ (47,429)	$ (35,548)