Balance Sheet Components - Accrued Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Jun. 30, 2016	Mar. 31, 2016
Accrued Liabilities [Line Items]
Accrued payroll and related expenses	$ 18,403	$ 16,015
Customer deposits	8,778	6,265
Accrued warranty costs	5,805	5,816	$ 5,634
Accrued cooperative marketing expenses	7,832	7,300
Deferred revenue	24,038	13,418
Others	6,037	6,804
Total accrued liabilities	70,893	55,618
Deferred Extended Warranty and On-site Service Revenue
Accrued Liabilities [Line Items]
Deferred revenue	$ 21,281	$ 12,746