Accounts receivable, net (Details) ¥ in Thousands, $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2017
CNY (¥)
|
Dec. 31, 2016
CNY (¥)
|
Dec. 31, 2017
USD ($)
|
|
| Accounts Receivable, net | |||
| Accounts receivable | ¥ 730,486 | ¥ 476,611 | |
| Allowance for doubtful accounts | (62,736) | (51,719) | |
| Accounts receivable, net | 667,750 | 424,892 | $ 102,193 |
| Movement of Allowance for Doubtful Accounts | |||
| Balance at beginning of year | 51,719 | 38,214 | |
| Provisions | 16,450 | 14,694 | |
| Reversals | (4,896) | (957) | |
| Write-offs | (537) | (232) | |
| Balance at end of year | ¥ 62,736 | ¥ 51,719 | |