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Fair Value Measurements - Additional Information (Detail) - USD ($) |  |  |  | 3 Months Ended |
--- | --- | --- | --- | --- | ---
Dec. 31, 2020 | Sep. 30, 2020 | Sep. 29, 2020 | Dec. 31, 2020 | Jun. 30, 2021
Fair Value Measurements [Line Items] |  |  |  |  |
Assets held in the Trust Account | $ 320,004,826 |  |  | $ 320,004,826 | $ 320,014,519
Assets held in the Trust Account | 320,004,846 |  |  | 320,004,846 | $ 320,014,519
Fair value per share of common stock |  | $ 10.14 | $ 10.12 |  |
Money Market Funds [Member] |  |  |  |  |
Fair Value Measurements [Line Items] |  |  |  |  |
Assets held in the Trust Account | 320,004,846 |  |  | 320,004,846 |
Private Placement [Member] |  |  |  |  |
Fair Value Measurements [Line Items] |  |  |  |  |
Aggregate values | 8,500,000 | $ 4,900,000 | $ 4,400,000 |  |
Public Warrants [Member] |  |  |  |  |
Fair Value Measurements [Line Items] |  |  |  |  |
Aggregate values | $ 16,100,000 | $ 9,300,000 | $ 8,200,000 |  |
Initial measurement |  |  |  | $ 16,106,667 |
Warrant [Member] |  |  |  |  |
Fair Value Measurements [Line Items] |  |  |  |  |
Fair value per share of common stock |  |  | $ 0.82 |  |

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- Definition The total amount of cash and securities held by third party trustees pursuant to terms of debt instruments or other agreements as of the date of each statement of financial position presented, which can be used by the trustee only to pay the noncurrent portion of specified obligations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(b)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
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- Definition The amount of cash, securities, or other assets held by a third-party trustee pursuant to the terms of an agreement which assets are available to be used by beneficiaries to that agreement only within the specific terms thereof and which agreement is expected to terminate more than one year from the balance sheet date (or operating cycle, if longer) at which time the assets held-in-trust will be released or forfeited. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(b)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
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