Secondary Listing in Hong Kong (Details) - HKD ($) $ in Millions |
Dec. 31, 2021 |
Dec. 08, 2021 |
|---|---|---|
| Over-allotment option | ||
| Subsidiary or Equity Method Investee [Line Items] | ||
| Shares lent to underwriters for settlement of over-allocations | 1,453,620 | |
| Class A ordinary shares | Over-allotment option | ||
| Subsidiary or Equity Method Investee [Line Items] | ||
| Shares lent to underwriters for settlement of over-allocations | 1,650,000 | |
| Shares borrowed by underwriters | 1,650,000 | |
| Class A ordinary shares | HKEX | ||
| Subsidiary or Equity Method Investee [Line Items] | ||
| Issuance of shares - global offering | 5,500,000 | |
| Gross proceeds from the global offering | $ 178.4 | |
| SINA | Class A ordinary shares | HKEX | ||
| Subsidiary or Equity Method Investee [Line Items] | ||
| Issuance of shares - global offering | 5,500,000 |