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Short-term borrowings - Additional Information (Detail) ¥ in Thousands, $ in Thousands | Dec. 31, 2019 CNY (¥) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 CNY (¥)
--- | --- | --- | ---
Short-term Debt [Line Items] |  |  |
Short-term bank borrowings | ¥ 235,000 |  | ¥ 25,000
Short term debt | 235,000 | $ 33,756 | 25,000
Collateral Pledged [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Short term debt | ¥ 251,853 |  | ¥ 26,000
Weighted Average [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Short term borrowings interest rate | 4.27% | 4.27% | 3.63%

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The portion of the carrying amount of short-term borrowings outstanding as of the balance sheet date which accrues interest at a set, unchanging rate. + References No definition available. + Details
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