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Marketable securities - Components (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Marketable securities
Amortized Cost	$ 80,604	$ 76,316
Gross Unrealized Gains	404	59
Gross Unrealized Losses	(11)	(45)
Fair Value	80,997	76,330
Corporate debt securities
Marketable securities
Amortized Cost	65,242	41,610
Gross Unrealized Gains	390	47
Gross Unrealized Losses	(11)	(45)
Fair Value	65,621	41,612
U.S. Treasury securities
Marketable securities
Amortized Cost	4,585	30,189
Gross Unrealized Gains	1	8
Fair Value	4,586	30,197
Government-sponsored securities
Marketable securities
Amortized Cost	6,820	4,517
Gross Unrealized Gains	8	4
Fair Value	6,828	$ 4,521
Commercial paper
Marketable securities
Amortized Cost	3,957
Gross Unrealized Gains	5
Fair Value	$ 3,962

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- Definition

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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