Short-Term Investments - Schedule of Gross Unrealized Losses and Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Jun. 30, 2020
Schedule Of Available For Sale Securities [Line Items]
Fair value	$ 246,040	$ 12,056
Unrealized losses	(61)	(11)
Corporate Bonds
Schedule Of Available For Sale Securities [Line Items]
Fair value	152,485	9,258
Unrealized losses	(55)	(10)
U.S. Treasury Securities
Schedule Of Available For Sale Securities [Line Items]
Fair value	85,466	2,798
Unrealized losses	(5)	$ (1)
Asset-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Fair value	8,089
Unrealized losses	$ (1)