Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Net loss	$ (47,262)	$ (35,321)	$ (23,063)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment, net of tax	188	(512)	(1,698)
Available for sale securities:
Unrealized gain (loss) on available-for-sale securities, net of tax	(360)	272	(156)
Reclassification adjustments for gain (loss) on available-for-sale securities recognized, net of tax	5	13	(262)
Net increase (decrease) from available-for-sale securities, net of tax	(355)	285	(418)
Other comprehensive income (loss), net of tax	(167)	(227)	(2,116)
Comprehensive loss	$ (47,429)	$ (35,548)	$ (25,179)