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Commitments and Contingencies - Additional Information (Details) ¥ in Thousands, $ in Thousands | 6 Months Ended
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Jun. 30, 2021 CNY (¥) | Jun. 30, 2021 USD ($) | Jun. 30, 2020 CNY (¥)
Commitments And Contingencies Disclosure [Line Items] |  |  |
Operating lease, expenses | ¥ 6,509 | $ 1,008 | ¥ 7,640
Consulting Service for Lease Term within One Year |  |  |
Commitments And Contingencies Disclosure [Line Items] |  |  |
Future minimum payment under non-cancellable purchase commitment | ¥ 0 |  |
Maximum [Member] | Office Premise [Member] |  |  |
Commitments And Contingencies Disclosure [Line Items] |  |  |
Operating Lease term of contract | 5 years |  |
Minimum [Member] | Office Premise [Member] |  |  |
Commitments And Contingencies Disclosure [Line Items] |  |  |
Operating Lease term of contract | 6 months |  |

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- Definition Commitments and contingencies disclosure. + References No definition available. + Details
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- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918673-209980 + Details
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- Definition Amount of operating lease expense. Excludes sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918638-209977 + Details
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- Definition Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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