Employee Benefit Plans (Common Stock Reserved for Future Issuance) (Details) - shares shares in Thousands	Sep. 30, 2021	Jun. 30, 2021
Class Of Stock [Line Items]
Shares reserved for issuance	16,762	21,526
2014 Employee Stock Purchase Plan
Class Of Stock [Line Items]
Shares reserved for issuance	3,425	4,414
Employee Stock Options and Awards Outstanding
Class Of Stock [Line Items]
Shares reserved for issuance	10,553	10,359
2013 Equity Incentive Plan Shares Available for Grant
Class Of Stock [Line Items]
Shares reserved for issuance	2,784	6,753