Short-Term Investments - Summary of Contractual Maturities of Available-For-Sale Debt Securities (Details) $ in Thousands	Dec. 31, 2021 USD ($)
Cash Cash Equivalents And Short Term Investments [Line Items]
Within One Year	$ 417,733
One to Two Years	134,897
Estimated Fair Value	552,630
U.S. Treasury securities
Cash Cash Equivalents And Short Term Investments [Line Items]
Within One Year	105,231
One to Two Years	116,493
Estimated Fair Value	221,724
Commercial paper
Cash Cash Equivalents And Short Term Investments [Line Items]
Within One Year	218,381
One to Two Years	0
Estimated Fair Value	218,381
Corporate debt securities
Cash Cash Equivalents And Short Term Investments [Line Items]
Within One Year	58,836
One to Two Years	0
Estimated Fair Value	58,836
U.S. Government-sponsored enterprises
Cash Cash Equivalents And Short Term Investments [Line Items]
Within One Year	32,282
One to Two Years	18,404
Estimated Fair Value	50,686
Supranational bonds
Cash Cash Equivalents And Short Term Investments [Line Items]
Within One Year	3,003
One to Two Years	0
Estimated Fair Value	$ 3,003