Lease Liabilities - Summary of Detailed Information About In Lease Liabilities (Detail) ¥ in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2020 CNY (¥)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 CNY (¥)
Disclosure Of Detailed Information About Lease Liabilities [Line Items]
Current	¥ 22,755	$ 3,516	¥ 28,633
Non- current	¥ 17,023	2,631	31,374
Lease Liabilities Current [Member]
Disclosure Of Detailed Information About Lease Liabilities [Line Items]
Maturity	2021
Current	¥ 22,755	$ 3,516	28,633
Lease Liabilities Current [Member] \| Bottom of range [member]
Disclosure Of Detailed Information About Lease Liabilities [Line Items]
Effective interest rate	1.25%	1.25%
Lease Liabilities Current [Member] \| Top of range [member]
Disclosure Of Detailed Information About Lease Liabilities [Line Items]
Effective interest rate	6.20%	6.20%
Lease Liabilities Noncurrent [Member]
Disclosure Of Detailed Information About Lease Liabilities [Line Items]
Non- current	¥ 17,023	$ 2,631	¥ 31,374
Lease Liabilities Noncurrent [Member] \| Bottom of range [member]
Disclosure Of Detailed Information About Lease Liabilities [Line Items]
Effective interest rate	1.25%	1.25%
Maturity	2022
Lease Liabilities Noncurrent [Member] \| Top of range [member]
Disclosure Of Detailed Information About Lease Liabilities [Line Items]
Effective interest rate	6.20%	6.20%
Maturity	2026

Disclosure of detailed information about lease liabilities.

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- Definition

Leases year of maturity.

+ References

No definition available.

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- Definition

The amount of current lease liabilities. [Refer: Lease liabilities]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2020-01-01
-Paragraph 47
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2020-en-r&anchor=para_47_b&doctype=Standard
-URIDate 2020-01-01

+ Details

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- Definition

The amount of non-current lease liabilities. [Refer: Lease liabilities]

+ References

+ Details

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- Definition

The weighted average lessee's incremental borrowing rate applied to lease liabilities recognised in the statement of financial position at the date of initial application of IFRS 16. The incremental borrowing rate is the rate of interest that a lessee would have to pay to borrow over a similar term, and with a similar security, the funds necessary to obtain an asset of a similar value to the right-of-use asset in a similar economic environment.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2020-01-01
-Paragraph C12
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2020-en-r&anchor=para_C12_a&doctype=Appendix&subtype=C
-URIDate 2020-01-01

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