Cash, cash equivalents and marketable securities - Fair Value of Marketable Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Cash and Cash Equivalents [Abstract]
Due in one year or less	$ 1,028,215
Due after one to five years	469,596
Total	$ 1,497,811	$ 1,376,409

Amount 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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