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Ordinary Shares (Details) - USD ($) $ / shares in Units, $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2018
--- | --- | --- | ---
Ordinary Shares |  |  |
Authorized share capital |  |  | $ 50,000
Authorized share capital (in shares) |  |  | 500,000,000
Par value (in US dollar per share) | $ 0.0001 | $ 0.0001 | $ 0.0001
Shares issued (in shares) |  |  | 1
Number of shares issued under share-based payment arrangement | 27,507,989 | 27,507,989 |
Class A Ordinary Shares |  |  |
Ordinary Shares |  |  |
Par value (in US dollar per share) | $ 0.0001 | $ 0.0001 |
Ordinary shares, shares issued (in shares) | 907,346,745 | 907,346,745 |
Ordinary shares, shares outstanding (in shares) | 906,731,802 | 896,488,277 |
Class A Ordinary Shares | 2019 incentive plan |  |  |
Ordinary Shares |  |  |
Number of shares of common stock outstanding, excluding shares issued to the depositary bank for bulk issuance of ADSs reserved | 889,303,377 | 879,059,852 |
Ordinary shares issued to the depositary bank for bulk issuance of ADSs | 17,428,425 | 17,428,425 |
Common Class B |  |  |
Ordinary Shares |  |  |
Par value (in US dollar per share) | $ 0.0001 | $ 0.0001 |
Ordinary shares, shares issued (in shares) | 96,082,700 | 96,082,700 |
Ordinary shares, shares outstanding (in shares) | 96,082,700 | 96,082,700 |

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