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Commitments and Contingencies - Future Minimum Rentals Payable Under Non-cancellable Operating Leases (Detail) ¥ in Thousands, $ in Thousands | Dec. 31, 2020 CNY (¥) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 CNY (¥)
--- | --- | --- | ---
Disclosure of finance lease and operating lease by lessee [line items] |  |  |
Future minimum rentals payable under non-cancellable operating leases | ¥ 2,020 | $ 313 | ¥ 190
One year or less [member] |  |  |
Disclosure of finance lease and operating lease by lessee [line items] |  |  |
Future minimum rentals payable under non-cancellable operating leases | 321 | 50 | 105
Later than one year and not later than five years [member] |  |  |
Disclosure of finance lease and operating lease by lessee [line items] |  |  |
Future minimum rentals payable under non-cancellable operating leases | 1,628 | 252 | 85
Later than five years [member] |  |  |
Disclosure of finance lease and operating lease by lessee [line items] |  |  |
Future minimum rentals payable under non-cancellable operating leases |  |  |

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- Definition Disclosure of operating lease by lessee [line item.] + References No definition available. + Details
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- Definition Minimum lease payment payable under non-cancellable operating lease. + References No definition available. + Details
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- Details
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- Details
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- Details
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