Balance Sheet Components - Accrued Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Jun. 30, 2016	Sep. 30, 2015
Accrued Liabilities [Line Items]
Accrued payroll and related expenses	$ 16,252	$ 16,015
Customer deposits	7,385	6,265
Accrued warranty costs	5,600	5,816	$ 7,545
Accrued cooperative marketing expenses	7,399	7,300
Deferred revenue (1)	16,462	13,418
Others	7,745	6,804
Total accrued liabilities	60,843	55,618
Deferred Extended Warranty and On-site Service Revenue
Accrued Liabilities [Line Items]
Deferred revenue (1)	$ 15,160	$ 12,746