Balance Sheet Components (Allowance for Doubtful Accounts) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	$ 1,478	$ 1,190	$ 1,648
Charges to bad debt expenses	1,407	1,687	323
Deductions	(1,831)	(1,399)	(781)
Balance at end of period	$ 1,054	$ 1,478	$ 1,190