Fair Value Measurements - Financial instruments measured at fair value on recurring basis by level within the fair value hierarchy (Details) - CNY (¥) ¥ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Assets: | ||
| Available-for-sale debt investments | ¥ 306 | ¥ 313 |
| Carrying Value | ||
| Assets: | ||
| Term deposits and short term investments | 464,226 | 428,343 |
| Restricted cash | 16,102 | 9,761 |
| Available-for-sale debt investments | 306 | 313 |
| Fair Value Recurring Basis | Level 1 | Fair Value | ||
| Assets: | ||
| Restricted cash | 16,102 | 9,761 |
| Fair Value Recurring Basis | Level 2 | Fair Value | ||
| Assets: | ||
| Term deposits and short term investments | 464,226 | 428,343 |
| Fair Value Recurring Basis | Level 3 | Fair Value | ||
| Assets: | ||
| Available-for-sale debt investments | ¥ 306 | ¥ 313 |