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Related Party Transactions - Additional Information (Detail) - USD ($) |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 5 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 20, 2020 | Sep. 24, 2020 | Jul. 30, 2020 | May 18, 2020 | Sep. 14, 2018 | Oct. 20, 2020 | Sep. 24, 2020 | Jul. 30, 2020 | Mar. 31, 2019 | Jun. 30, 2021 | Dec. 31, 2020 | Jun. 30, 2021 | Dec. 31, 2019
Related Party Transactions (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate shares |  |  | 1,125,000 |  |  |  |  | 1,125,000 |  |  |  |  |
Conversation of founder shares percentage |  |  | 20.00% |  |  |  |  | 20.00% |  |  |  |  |
Forfeited founder shares | 625,000 |  |  |  |  | 625,000 |  |  |  |  |  |  |
Outstanding amount of founder Shares | 8,000,000 |  |  |  |  | 8,000,000 |  |  |  |  |  |  |
Business combination, description |  |  |  |  |  |  |  |  |  |  | (A) one year after the completion of a Business Combination and (B) subsequent to a Business Combination, (x) if the closing price of the Class A ordinary shares equals or exceeds $12.00 per share (as adjusted for share sub-divisions, share dividends, rights issuances, reorganizations, recapitalizations and the like) for any 20 trading days within any 30-trading day period commencing at least 150 days after a Business Combination, or (y) the date on which the Company completes a liquidation, merger, share exchange or other similar transaction that results in all of the Public Shareholders having the right to exchange their Class A ordinary shares for cash, securities or other property. | The Sponsor has agreed, subject to limited exceptions, not to transfer, assign or sell any of the Founder Shares until the earliest of: (A) one year after the completion of a Business Combination and (B) subsequent to a Business Combination, (x) if the closing price of the Class A ordinary shares equals or exceeds $12.00 per share (as adjusted for share sub-divisions, share dividends, rights issuances, reorganizations, recapitalizations and the like) for any 20 trading days within any 30-trading day period commencing at least 150 days after a Business Combination, or (y) the date on which the Company completes a liquidation, merger, share exchange or other similar transaction that results in all of the Public Shareholders having the right to exchange their Class A ordinary shares for cash, securities or other property. |
Office space administrative |  | $ 10,000 |  |  |  |  | $ 10,000 |  |  |  |  |  |
Price per share | $ 10.00 |  |  |  |  | $ 10.00 |  |  |  | $ 11.50 | $ 11.50 | $ 11.50 |
Gross proceeds |  |  |  |  |  |  |  |  |  |  |  | $ 467,000,000 |
Servicing Fee |  |  |  |  |  |  |  |  |  | $ 30,000 |  | 60,000 |
Accrued Expenses |  |  |  |  |  |  |  |  |  | $ 60,000 | $ 32,000 | $ 60,000 |
Unsecured Promissory Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transactions (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  |  |  |  |  | $ 300,000 |  |  |  |  |
Outstanding amount of promissory note |  |  |  |  |  |  |  |  |  |  | $ 300,000 |  |
Private Placement Warrant [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transactions (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Business combination, description |  |  |  |  |  |  |  |  |  |  | The notes may be repaid upon completion of a Business Combination, without interest, or, at the lender’s discretion, up to $1,500,000 of notes may be converted upon completion of a Business Combination into warrants at a price of $1.50 per warrant. Such warrants would be identical to the Private Placement Warrants. In the event that a Business Combination does not close, the Company may use a portion of proceeds held outside the Trust Account to repay the Working Capital Loans but no proceeds held in the Trust Account would be used to repay the Working Capital Loans. As of December 31, 2020, the Company had no outstanding borrowings under the Working Capital Loans. | The notes may be repaid upon completion of a Business Combination, without interest, or, at the lender’s discretion, up to $1,500,000 of notes may be converted upon completion of a Business Combination into warrants at a price of $1.50 per warrant. Such warrants would be identical to the Private Placement Warrants. In the event that a Business Combination does not close, the Company may use a portion of proceeds held outside the Trust Account to repay the Working Capital Loans but no proceeds held in the Trust Account would be used to repay the Working Capital Loans. As of June 30, 2021 and December 31, 2020, the Company had no outstanding borrowings under the Working Capital Loans. |
Series E preferred stock |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transactions (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of redeemable preferred stock, value |  |  |  |  | $ 137,739 |  |  |  |  |  |  |  |
Class B ordinary shares [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transactions (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of Stock, number of shares issued in transaction |  |  | 8,625,000 |  |  |  |  | 8,625,000 |  |  |  |  |
Founder Shares [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transactions (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of sponsor paid |  |  | $ 25,000 |  |  |  |  | $ 25,000 |  |  |  |  |
Aggregate shares | 500,000 |  |  |  |  | 500,000 |  |  |  |  |  |  |
Rocket Lab USA, Inc. |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transactions (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Beneficial ownership percentage |  |  |  |  |  |  |  |  |  | 5.00% | 5.00% | 5.00% |
Related party transaction, due from (to) related party |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 | $ 0 | $ 0
Rocket Lab USA, Inc. | Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transactions (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Price per share |  |  |  |  |  |  |  |  | $ 23.6487 |  |  |  |
Sale of aggregate, shares |  |  |  |  |  |  |  |  | 625,564 |  |  |  |
Gross proceeds |  |  |  |  |  |  |  |  | $ 14,300,000 |  |  |  |
Stock repurchased during period, shares |  |  |  |  |  |  |  |  | 422,857 |  |  |  |
Related party transaction, due from (to) related party |  |  |  |  |  |  |  |  | $ 10,000,000 |  |  |  |
Rocket Lab USA, Inc. | Series E preferred stock |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transactions (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate shares |  |  |  |  | 4,368,313 |  |  |  |  |  |  |  |
Issuance of redeemable preferred stock, share |  |  |  |  | 334,267 |  |  |  |  |  |  |  |
Price per share |  |  |  |  | $ 31.5316 |  |  |  |  |  |  |  |
Issuance of redeemable preferred stock, value |  |  |  |  | $ 137,739,000 |  |  |  |  |  |  |  |
Rocket Lab USA, Inc. | Series E 1 preferred stock |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transactions (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of redeemable preferred stock, share |  |  |  | 650,140 |  |  |  |  |  |  |  |  |
Price per share |  |  |  | $ 31.5316 |  |  |  |  |  |  |  |  |
Issuance of redeemable preferred stock, value |  |  |  | $ 20,500,000 |  |  |  |  |  |  |  |  |
Rocket Lab USA, Inc. | Affiliated Entity [Member] | Series E preferred stock |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transactions (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of redeemable preferred stock, share |  |  |  |  | 334,267 |  |  |  |  |  |  |  |
Issuance of redeemable preferred stock, value |  |  |  |  | $ 10,539,000 |  |  |  |  |  |  |  |
Rocket Lab USA, Inc. | Affiliated Entity [Member] | Series E 1 preferred stock |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transactions (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of redeemable preferred stock, share |  |  |  | 142,713 |  |  |  |  |  |  |  |  |
Issuance of redeemable preferred stock, value |  |  |  | $ 4,499,000 |  |  |  |  |  |  |  |  |
Rocket Lab USA, Inc. | As Previously Reported [Member] | Series E 1 preferred stock |  |  |  |  |  |  |  |  |  |  |  |  |
Related Party Transactions (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of redeemable preferred stock, value |  |  |  | $ 20,499,000 |  |  |  |  |  |  |  |  |

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