Fair Value Measurements - Schedule of Financial Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Gross Unrealized Holding Gains	$ 325	$ 1,123
Gross Unrealized Holding Losses	(685)	(20)
Equity securities	5,900
Amortized Cost	776,579	683,364
Aggregate Fair Value	782,080	690,544
Reconciliation to cash, cash equivalents and investments on condensed consolidated balance sheet
Minus: Restricted cash equivalents invested in money market funds	(8,900)
Plus: Cash deposits	35,108	98,962
Total cash, cash equivalents and investments	809,269	781,590
Money market funds
Reconciliation to cash, cash equivalents and investments on condensed consolidated balance sheet
Minus: Restricted cash equivalents invested in money market funds	(7,919)	(7,916)
Level 1 | Money market funds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Aggregate Fair Value	190,227	86,607
Level 1 | Equity securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity securities	5,861	6,077
Level 2 | U.S. government treasuries
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Amortized Cost	282,459	310,148
Gross Unrealized Holding Gains	55	341
Gross Unrealized Holding Losses	(369)	(3)
Aggregate Fair Value	282,145	310,486
Level 2 | U.S. government agency bonds and discount notes
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Amortized Cost	50,274	45,773
Gross Unrealized Holding Gains	0	6
Gross Unrealized Holding Losses	(105)	(16)
Aggregate Fair Value	50,169	45,763
Level 2 | Asset-backed securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Amortized Cost	76,530	84,676
Gross Unrealized Holding Gains	125	277
Gross Unrealized Holding Losses	(26)	0
Aggregate Fair Value	76,629	84,953
Level 2 | Corporate bonds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Amortized Cost	177,089	156,160
Gross Unrealized Holding Gains	145	499
Gross Unrealized Holding Losses	(185)	(1)
Aggregate Fair Value	$ 177,049	$ 156,658