Investment Securities and Fair Value Measurements - Summary of Amortized Cost, Fair Value, and Unrealized Losses by Type of Security (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	$ 433,853	$ 381,243
Unrealized Gains	92	360
Unrealized Losses	(961)	(325)
Total available-for-sale securities, Estimated Fair Value	432,984	381,278
U.S. government agency bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	93,604	193,231
Unrealized Gains	0	90
Unrealized Losses	(193)	(245)
Total available-for-sale securities, Estimated Fair Value	93,411	193,076
U.S. treasury bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	234,418	103,476
Unrealized Gains	84	156
Unrealized Losses	(668)	(35)
Total available-for-sale securities, Estimated Fair Value	233,834	103,597
Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	105,831	84,536
Unrealized Gains	8	114
Unrealized Losses	(100)	(45)
Total available-for-sale securities, Estimated Fair Value	$ 105,739	$ 84,605