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Share Incentive Plan - Summary of Option Activities (Details) - Employee Stock Option - CNY (¥) ¥ / shares in Units, ¥ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Number of shares, Outstanding beginning balance | 31,931 |  |
Number of shares, Granted | 375,000 | 0 | 0
Number of shares, Exercised | (375,000) |  |
Number of shares, Forfeited | (381) |  |
Number of shares, Outstanding ending balance | 31,550 | 31,931 |
Weighted-average exercise price, Outstanding beginning balance | ¥ 560.95 |  |
Weighted-average exercise price, Granted | 26.94 |  |
Weighted-average exercise price, Exercised | 26.94 |  |
Weighted-average exercise price, Forfeited | 560.95 |  |
Weighted-average exercise price, Outstanding ending balance | ¥ 560.95 | ¥ 560.95 |
Weighted-average remaining contractual term, Outstanding | 4 years 9 months 21 days | 5 years 9 months 21 days |
Weighted-average remaining contractual term, Granted | 5 years |  |
Weighted-average remaining contractual term, Exercised | 5 years |  |
Aggregated intrinsic value, Granted | ¥ 2,273 |  |
Aggregated intrinsic value, Exercised | ¥ (2,273) |  |
Weighted average grant date fair value, Outstanding beginning balance | ¥ 271.90 |  |
Weighted average grant date fair value, Granted | 18.51 |  |
Weighted average grant date fair value, Exercised | 18.51 |  |
Weighted average grant date fair value, Forfeited | 271.90 |  |
Weighted average grant date fair value, Outstanding ending balance | ¥ 271.90 | ¥ 271.90 |

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- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(03) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(01) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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