Fair Value Measurements - Schedule of Financial Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Gross Unrealized Holding Gains	$ 1,123	$ 1,488
Gross Unrealized Holding Losses	(20)	(71)
Equity securities	6,100
Amortized Cost	683,364	1,077,353
Aggregate Fair Value	690,544	1,083,120
Reconciliation to cash, cash equivalents and investments on consolidated balance sheet
Plus: Cash deposits	98,962	32,524
Total cash, cash equivalents and investments	781,590	1,095,363
Money market funds
Reconciliation to cash, cash equivalents and investments on consolidated balance sheet
Minus: Restricted cash equivalents invested in money market funds	(7,916)	(20,281)
Level 1 | Money market funds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Aggregate Fair Value	86,607	146,505
Level 1 | Equity securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity securities	6,077	4,350
Level 2 | U.S. government treasuries
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Amortized Cost	310,148	588,794
Gross Unrealized Holding Gains	341	722
Gross Unrealized Holding Losses	(3)	(33)
Aggregate Fair Value	310,486	589,483
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	45,773	38,081
Gross Unrealized Holding Gains	6	17
Gross Unrealized Holding Losses	(16)	(19)
Aggregate Fair Value	45,763	38,079
Level 2 | Asset-back securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Amortized Cost	84,676	51,038
Gross Unrealized Holding Gains	277	220
Gross Unrealized Holding Losses	0	(10)
Aggregate Fair Value	84,953	51,248
Level 2 | Corporate bonds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Amortized Cost	156,160	252,935
Gross Unrealized Holding Gains	499	529
Gross Unrealized Holding Losses	(1)	(9)
Aggregate Fair Value	$ 156,658	$ 253,455