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Financial Instruments and Fair Value Measurements - Changes in fair value of the Level 3 liabilities (Details) - USD ($) $ in Thousands |  | 6 Months Ended
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Mar. 25, 2021 | Jun. 30, 2021
Changes in fair value of the Level 3 liabilities |  |
Balance at beginning |  | $ 2,209
Fair value recognized upon the issuance of SAFE |  | 8,942
Balance at the end |  | 9,986
Proceeds from simple agreements for future equity |  | 8,942
SAFE |  |
Changes in fair value of the Level 3 liabilities |  |
Fair value recognized upon the issuance of SAFE |  | 8,942
Change in the fair value |  | 1,044
Balance at the end |  | 9,986
Proceeds from simple agreements for future equity | $ 8,942 |
Derivative Liability. |  |
Changes in fair value of the Level 3 liabilities |  |
Balance at beginning |  | 2,209
Change in the fair value |  | $ (2,209)

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- Definition The cash inflow from simple agreements for future equity ("SAFEs) entered into by the company during the period. + References No definition available. + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of gain (loss) recognized in other comprehensive income (OCI) from liability measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1a) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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- Definition Amount of issuances of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + 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 (c)(2) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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- Definition Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + 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 (c) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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- Details
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