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Fair Value Measurements - Schedule of Financial Assets Measured at Fair Value on a Recurring Basis (Details) - Fair Value Measurements, Recurring - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
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Assets |  |
Total financial assets | $ 9,978 | $ 9,981
Money Market Funds |  |
Assets |  |
Total financial assets | 2,818 | 2,455
U.S. Treasury Notes |  |
Assets |  |
Total financial assets | 7,160 | 7,526
Quoted Prices in Active Markets for identical Assets (Level 1) |  |
Assets |  |
Total financial assets | 9,978 | 9,981
Quoted Prices in Active Markets for identical Assets (Level 1) | Money Market Funds |  |
Assets |  |
Total financial assets | 2,818 | 2,455
Quoted Prices in Active Markets for identical Assets (Level 1) | U.S. Treasury Notes |  |
Assets |  |
Total financial assets | $ 7,160 | $ 7,526

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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