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Fair Value Measurements - Summary of fair value of the warrant liabilities (Detail) - USD ($) | 8 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2019 | Dec. 31, 2020
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Change in fair value of Public Warrants and Private Placement Warrants | $ 959,526 |  | $ 310,330,174
Warrant liabilities (Level 3) [Member] | Warrant [Member] |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Beginning balance |  | $ 0 | 3,312,941
Issuance of Public Warrants and Private Placement Warrants |  | 8,635,764 |
Change in fair value of Public Warrants and Private Placement Warrants |  | 959,526 | 155,156,061
Transfer of Public Warrants from Level 3 to Level 1 measurement |  | (6,282,349) |
Ending balance | $ 3,312,941 | $ 3,312,941 | $ 158,469,002

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- Definition Amount of transfers of financial instrument classified as a liability out of level 3 of the fair value hierarchy. + 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)(3) -URI http://asc.fasb.org/extlink&oid=117815213&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=117815213&loc=d3e19207-110258 + Details
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