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Marketable Securities - AFS Debt Securities (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
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Marketable securities available for sale, consisting of debt securities: |  |
Amortized Cost | $ 47,341 | $ 33,758
Gross Unrealized Gains | 34 | 1
Gross Unrealized Losses |  | (12)
Estimated Market Value | 47,375 | 33,747
Commercial paper |  |
Marketable securities available for sale, consisting of debt securities: |  |
Amortized Cost | 7,439 | 7,598
Gross Unrealized Gains | 4 |
Estimated Market Value | 7,443 | 7,598
Corporate debt securities |  |
Marketable securities available for sale, consisting of debt securities: |  |
Amortized Cost |  | 7,980
Gross Unrealized Gains |  | 1
Estimated Market Value |  | 7,981
Government and agency securities |  |
Marketable securities available for sale, consisting of debt securities: |  |
Amortized Cost | 39,902 | 18,180
Gross Unrealized Gains | 30 |
Gross Unrealized Losses |  | (12)
Estimated Market Value | $ 39,932 | $ 18,168

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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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