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Acquisition - Additional Information (Detail) ¥ in Thousands, $ in Thousands |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Apr. 30, 2021 USD ($) | Oct. 31, 2020 USD ($) | Dec. 31, 2020 CNY (¥) | Jun. 30, 2021 | Dec. 31, 2020 USD ($)
cash consideration | ¥ |  |  | ¥ 935,932 |  |
TTP Member [Member] |  |  |  |  |
Percentage of voting interests acquired |  |  |  | 51.00% | 51.00%
Exclusive Technical Consulting And Service Agreements [Member] |  |  |  |  |
Business acquisition, transaction costs |  | $ 168,000 |  |  |
First Closing Transaction [Member] |  |  |  |  |
Percentage of equity interests on converted basis |  |  |  |  | 48.87%
First Closing Transaction [Member] | Exclusive Technical Consulting And Service Agreements [Member] |  |  |  |  |
Business acquisition, transaction costs |  |  |  |  | $ 143,000
Percentgae of exchange preferred shares |  |  | 31.48% |  |
Second Closing Transaction [Member] | TTP Member [Member] |  |  |  |  |
Percentage of equity interests on converted basis | 51.00% |  |  |  |
cash consideration | $ 25,000 |  |  |  |
Second Closing Transaction [Member] | Exclusive Technical Consulting And Service Agreements [Member] |  |  |  |  |
Business acquisition, transaction costs | $ 25,000 |  |  |  |
Percentgae of exchange preferred shares | 4.17% |  |  |  |
Convertible Debt Securities [Member] | Exclusive Technical Consulting And Service Agreements [Member] |  |  |  |  |
Business acquisition, right to purchase |  | $ 200,000 |  |  |

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