Balance Sheet Components (Allowance for Product Returns) (Details) - Allowance for Product Returns [Member] - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	$ 27,963	$ 25,897	$ 11,266
Additions	67,113	76,802	85,190
Deductions	(77,705)	(74,736)	(70,559)
Balance at end of period	$ 17,371	$ 27,963	$ 25,897