Other Income and Expenses Recognized in Statement of Profit and Loss - Summary of Sales Related Shipping and Handling Expenses Not Separately Billed to Customers (Detail) ¥ in Thousands, $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
|
Dec. 31, 2017
CNY (¥)
|
Dec. 31, 2017
USD ($)
|
Dec. 31, 2016
CNY (¥)
|
Dec. 31, 2015
CNY (¥)
|
|
| Selling, general and administrative expenses [Member] | ||||
| Disclosure of income statement [Line Items] | ||||
| Selling, general and administrative expenses | ¥ 208,197 | $ 32,894 | ¥ 159,023 | ¥ 172,865 |