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Fair Value Measurements - Fair Value of Liabilities (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Assets: |  |
Cash and Cash Equivalents | $ 271,458 | $ 287,060
Asset-backed securities |  |
Assets: |  |
Cash and Cash Equivalents | 0 | 0
Fair Value, Recurring |  |
Assets: |  |
Total assets | 271,905 | 288,185
Fair Value, Recurring | Money market funds |  |
Assets: |  |
Cash and Cash Equivalents | 271,458 | 287,060
Fair Value, Recurring | Asset-backed securities |  |
Assets: |  |
Available-for-sale investments | 447 | 1,125
Level 1 | Fair Value, Recurring |  |
Assets: |  |
Total assets | 271,458 | 287,060
Level 1 | Fair Value, Recurring | Money market funds |  |
Assets: |  |
Cash and Cash Equivalents | 271,458 | 287,060
Level 1 | Fair Value, Recurring | Asset-backed securities |  |
Assets: |  |
Available-for-sale investments | 0 | 0
Level 2 | Fair Value, Recurring |  |
Assets: |  |
Total assets | 447 | 1,125
Level 2 | Fair Value, Recurring | Money market funds |  |
Assets: |  |
Cash and Cash Equivalents | 0 | 0
Level 2 | Fair Value, Recurring | Asset-backed securities |  |
Assets: |  |
Available-for-sale investments | 447 | 1,125
Level 3 | Fair Value, Recurring |  |
Assets: |  |
Total assets | 0 | 0
Level 3 | Fair Value, Recurring | Money market funds |  |
Assets: |  |
Cash and Cash Equivalents | 0 | 0
Level 3 | Fair Value, Recurring | Asset-backed securities |  |
Assets: |  |
Available-for-sale investments | $ 0 | $ 0

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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- Definition Amount of 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 (aa) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481830/320-10-45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479130/326-30-45-1 + Details
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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