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v3.21.2

Cash, Cash Equivalents and Short-Term Investments - Available-for-sale debt securities (Details) - USD ($) | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Amortized Cost | $ 230,140,000 | $ 23,179
Unrealized Gains | 83,000 | 173
Unrealized Losses | (1,092,000) | (43)
Fair Value | 229,131,000 | 23,309
U.S. Treasury notes |  |
Amortized Cost | 230,140,000 | 23,179
Unrealized Gains | 83,000 | 173
Unrealized Losses | (1,092,000) | (43)
Fair Value | $ 229,131,000 | $ 23,309

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- Definition Amortized cost 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 -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121558606&loc=SL82898722-210454 + Details
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