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Other Financial Liabilities - Detailed Information About In Other Lease Payments (Detail)
¥ in Thousands
Dec. 31, 2018
CNY (¥)
Disclosure of Detailed Information About Other financial liabilities [Line Items]  
Undiscounted Minimum Lease Payments ¥ 48
Undiscounted Lease Liability 48
Less: Amount representing finance charges [1]
Discounted Minimum Lease Payments 48
Discounted Lease Liability 48
One year or less [member]  
Disclosure of Detailed Information About Other financial liabilities [Line Items]  
Undiscounted Minimum Lease Payments 14
Undiscounted Lease Liability 14
Later Than One Year and Not Later ​Than ​Five ​Years ​[Member]  
Disclosure of Detailed Information About Other financial liabilities [Line Items]  
Undiscounted Minimum Lease Payments 34
Undiscounted Lease Liability ¥ 34
[1] Less than RMB 1 thousand (US$1 thousand)