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Leases - Summary of Detailed Information About Carrying Amounts of Lease Liabilities and Movements During Year (Detail) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019 CNY (¥)	Dec. 31, 2019 USD ($)	Dec. 31, 2019 CNY (¥)	Dec. 31, 2019 USD ($)	Jan. 01, 2019 CNY (¥)	Jan. 01, 2019 USD ($)
Disclosure Of Quantitative Information About Lease Liabilities [Line Items]
Accretion of interest	¥ 2,918	$ 412
Payments	48,365	6,826
Ending balance	60,007	8,469
Current			¥ 28,633	$ 4,041
Non- current			31,374	4,428
Total	60,007	8,469	60,007	8,469	¥ 96,852	$ 13,670
Increase (decrease) due to changes in accounting policy [member]
Disclosure Of Quantitative Information About Lease Liabilities [Line Items]
Beginning balance	96,852	13,670
Effect of adopting of IFRS 16	96,852	13,670
Additions	11,473	1,619
Accretion of interest	2,918	412
Payments	(51,283)	(7,238)
Translation difference	47	6
Ending balance	60,007	8,469
Total	¥ 60,007	$ 8,469	¥ 60,007	$ 8,469

X

- Definition

Additions To Lease Liabilities.

+ References

No definition available.

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- Definition

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- Definition

Effect of adopting of IFRS sixteen on lease liabilities

+ References

No definition available.

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- Definition

Translation Difference on Lease Liabilities

+ References

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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 2019-01-01
-Paragraph 47
-Subparagraph b
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- Definition

The amount of interest expense on lease liabilities. [Refer: Lease liabilities]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2019-01-01
-Paragraph 53
-Subparagraph b
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- Definition

The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Paragraph 47
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- Definition

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

+ References

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- Definition

The cash outflow for payment of lease liabilities, classified as financing activities. [Refer: Lease liabilities]

+ References

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-IssueDate 2019-01-01
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