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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). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 + Details
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