Balance Sheet Components - Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2014
Balance Sheet Related Disclosures [Abstract]
Accrued payroll and related expenses	$ 18,619	$ 15,141
Customer deposits	6,949	6,314
Accrued warranty costs	6,116	7,700	$ 6,960
Accrued cooperative marketing expenses	7,300	5,690
Deferred service revenue	9,416	4,085
Others	7,770	7,813
Total accrued liabilities	$ 56,170	$ 46,743