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Secondary Listing in Hong Kong (Details) - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Dec. 08, 2021 | Dec. 31, 2021
Secondary Listing in Hong Kong |  |
Underwriters borrowed (in shares) |  | 1,650,000
Over-allotment option |  |
Secondary Listing in Hong Kong |  |
Shares lent to underwriters for settlement of over-allocations | 1,453,620 |
Class A ordinary shares | Over-allotment option |  |
Secondary Listing in Hong Kong |  |
Shares lent to underwriters for settlement of over-allocations | 1,650,000 |
Class A ordinary shares | HKEX |  |
Secondary Listing in Hong Kong |  |
Issuance of shares - global offering | 5,500,000 |
Net proceeds from the global offering | $ 178.4 |
Related Parties [Member] | SINA | Class A ordinary shares | HKEX |  |
Secondary Listing in Hong Kong |  |
Issuance of shares - global offering | 5,500,000 |

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- Definition The cash inflow associated with the amount received from entity's first offering of stock to the public. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 14 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-14 + Details
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