Marketable Securities and Corporate Bonds - Schedule of Available-for-sale Securities, at Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Debt Securities, Available-for-sale [Line Items]
Amortized cost	$ 714,319	$ 16,739
Allowance for credit losses	0	0
Net carrying amount	714,319	16,739
Gross unrealized gains	189	333
Gross unrealized losses	(2,816)	0
Fair value	711,692	17,072
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized cost	588,785	16,158
Allowance for credit losses	0	0
Net carrying amount	588,785	16,158
Gross unrealized gains	189	333
Gross unrealized losses	0	0
Fair value	588,974	16,491
Corporate Securities
Debt Securities, Available-for-sale [Line Items]
Amortized cost	124,953
Allowance for credit losses	0
Net carrying amount	124,953
Gross unrealized gains	0
Gross unrealized losses	(2,816)
Fair value	122,137
Certificates of Deposit
Debt Securities, Available-for-sale [Line Items]
Amortized cost	581	581
Allowance for credit losses	0	0
Net carrying amount	581	581
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Fair value	$ 581	$ 581

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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