Organization and Summary of Significant Accounting Policies - Schedule of Contractual Maturities of Available-for-sale Debt Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Schedule Of Available For Sale Securities [Line Items]
Due in 1 Year or Less	$ 267,122	$ 291,267
Due Between 1 and 2 Years	38,949	48,116
U.S. Treasury Securities
Schedule Of Available For Sale Securities [Line Items]
Due in 1 Year or Less	84,408	51,131
Due Between 1 and 2 Years	38,949	48,116
Corporate Debt Securities
Schedule Of Available For Sale Securities [Line Items]
Due in 1 Year or Less	0	6,026
Due Between 1 and 2 Years	0	0
Commercial Paper
Schedule Of Available For Sale Securities [Line Items]
Due in 1 Year or Less	182,714	234,110
Due Between 1 and 2 Years	$ 0	$ 0