Investment Securities - Summary of Cost, Gross Unrealized Holding Gains and Losses, Allowances for Credit Losses and Fair Value of Available-for-Sale Investments by Types, Maturities and Classes of Securities (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2022	Dec. 31, 2021
Schedule Of Available For Sale Securities [Line Items]
Debt securities, Amortized Cost	$ 242,038	$ 85,739
Debt securities, Unrealized Losses	(2,315)	(244)
Debt securities, Estimated Fair Value	$ 239,723	$ 85,495
Certificates of Deposit | Within 1 Year
Schedule Of Available For Sale Securities [Line Items]
Debt securities, Maturity	Within 1 year	Within 1 year
Debt securities, Amortized Cost	$ 3,817	$ 2,896
Debt securities, Unrealized Losses	(50)	(3)
Debt securities, Estimated Fair Value	$ 3,767	$ 2,893
Certificates of Deposit | 1 Year to 2 Years
Schedule Of Available For Sale Securities [Line Items]
Debt securities, Maturity	1 year to 2 years	1 year to 2 years
Debt securities, Amortized Cost	$ 1,951	$ 2,887
Debt securities, Unrealized Losses	(26)	(9)
Debt securities, Estimated Fair Value	$ 1,925	$ 2,878
U.S. Treasury Securities | Within 1 Year
Schedule Of Available For Sale Securities [Line Items]
Debt securities, Maturity	Within 1 year	Within 1 year
Debt securities, Amortized Cost	$ 162,295	$ 15,045
Debt securities, Unrealized Losses	(1,241)	(23)
Debt securities, Estimated Fair Value	$ 161,054	$ 15,022
U.S. Treasury Securities | 1 Year to 2 Years
Schedule Of Available For Sale Securities [Line Items]
Debt securities, Maturity	1 year to 2 years	1 year to 2 years
Debt securities, Amortized Cost	$ 73,975	$ 64,911
Debt securities, Unrealized Losses	(998)	(209)
Debt securities, Estimated Fair Value	$ 72,977	$ 64,702