Investments - Summary of fair value of available for sale securities (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Debt Securities, Available-for-Sale [Line Items]
Fair Value	$ 365,946	$ 398,660
Money market funds
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	16,857	38,721
Fair Value	16,857	38,721
Cash equivalents
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	16,857	38,721
Fair Value	16,857	38,721
US treasury securities, short term
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	366,519	397,908
Unrealized Gains	36	752
Unrealized Losses	(609)
Fair Value	365,946	398,660
US treasury securities, long term
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	148,189	146,073
Unrealized Gains		248
Unrealized Losses	(603)
Fair Value	147,586	146,321
Available-for-sale investments - short-term
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	366,519	397,908
Unrealized Gains	36	752
Unrealized Losses	(609)
Fair Value	365,946	398,660
Available-for-sale investments - long-term
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	148,189	146,073
Unrealized Gains		248
Unrealized Losses	(603)
Fair Value	$ 147,586	$ 146,321

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 excluding accrued interest, before allowance for credit loss, 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 excluding accrued interest, 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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