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Prepaid Expense and Other Assets - Allowance for doubtful accounts (Details) - CNY (¥) ¥ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Balance at beginning of the year | ¥ (12,635) |
Additions | (965) | ¥ (12,635)
Reversals | 42 |
Write-off | 184 |
Balance at end of the year | (14,979) | (12,635)
Impact of adoption of ASC 326 |  |
Balance at beginning of the year | ¥ 1,605 |
Balance at end of the year |  | ¥ 1,605

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- Definition The valuation allowance as of the balance sheet date to reduce the gross amount of receivables to estimated net realizable value, which would be presented in parentheses on the face of the balance sheet. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-4 + Details
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Balance Type: | credit
Period Type: | instant

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- Definition Amount of expense for expected credit loss on premiums and other receivables. + References No definition available. + Details
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- Definition Amount of reversal of expense for expected credit loss on premiums and other receivables. + References No definition available. + Details
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- Definition Write-off on other receivables. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
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