Amount of lease cost recognized by lessee for lease contract.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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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.

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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

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- Definition

Amount of short-term lease cost, excluding expense for lease with term of one month or less.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Leases (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
Leases (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2020 CNY (¥)	Dec. 31, 2019 CNY (¥)	Dec. 31, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Total lease costs	¥ 39,327	¥ 110,993
Short-term lease costs	¥ 6,653		$ 21,726
Minimum [Member]
Lessee, Lease, Description [Line Items]
Lease term	1 month
Maximum [Member]
Lessee, Lease, Description [Line Items]
Lease term	14 years