The Company and Significant Accounting Policies - Correction of Immaterial Errors (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Corrections of Immaterial Errors [Line Items]
Decrease in net loss	$ (1,263)	$ (4,105)	$ (4,849)	$ (4,838)
Deferred income tax liabilities	3,913		3,913		$ 3,023
Retained earnings	$ 98,219		$ 98,219		103,232
Adjustment | Adjustment on Overstatement of Long-Term Deferred Income Tax Liability and Income Tax Expense
Corrections of Immaterial Errors [Line Items]
Decrease in net loss					$ 172	$ 204	$ 149
Decrease in basic and diluted net loss per common share					$ 0.01	$ 0.01	$ 0.01
Adjustment | Adjustment on Overstatement of Long-Term Deferred Income Tax Liability and Retained Earnings
Corrections of Immaterial Errors [Line Items]
Deferred income tax liabilities					$ (525)	$ (353)	$ (149)
Retained earnings					$ 525	$ 353	$ 149