Fair Value Measurements - Available-for-sale securities (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Fair Value Measurements
Amortized Cost	$ 478,246	$ 249,636
Gross Unrealized Gains	3	192
Gross Unrealized Losses	(937)	(5)
Fair Value	477,312	249,823
Commercial paper
Fair Value Measurements
Amortized Cost	24,236	5,957
Gross Unrealized Gains		2
Gross Unrealized Losses	(19)
Fair Value	24,217	5,959
Corporate debt securities
Fair Value Measurements
Amortized Cost	95,670	45,740
Gross Unrealized Gains	2	28
Gross Unrealized Losses	(122)	(2)
Fair Value	95,550	45,766
Government securities
Fair Value Measurements
Amortized Cost	358,340	197,939
Gross Unrealized Gains	1	162
Gross Unrealized Losses	(796)	(3)
Fair Value	$ 357,545	$ 198,098

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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Amount, before tax, of unrealized loss 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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Amortized cost of 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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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current.

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