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Fair Value Measurements - Available-for-sale securities (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Fair Value Measurements |  |
Amortized Cost | $ 117,617 | $ 30,993
Gross Unrealized Gains | 51 | 33
Gross Unrealized Losses | (8) | (2)
Fair Value | 117,660 | 31,024
Commercial paper |  |
Fair Value Measurements |  |
Amortized Cost | 6,378 | 3,311
Gross Unrealized Gains | 9 | 4
Fair Value | 6,387 | 3,315
Corporate debt securities |  |
Fair Value Measurements |  |
Amortized Cost | 47,228 | 8,589
Gross Unrealized Gains | 29 | 12
Gross Unrealized Losses | (4) |
Fair Value | 47,253 | 8,601
Government securities |  |
Fair Value Measurements |  |
Amortized Cost | 64,011 | 19,093
Gross Unrealized Gains | 13 | 17
Gross Unrealized Losses | (4) | (2)
Fair Value | $ 64,020 | $ 19,108

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