Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - 12 months ended Dec. 31, 2017 ¥ in Thousands, $ in Thousands |
CNY (¥)
¥ / shares
|
USD ($)
$ / shares
|
|---|---|---|
| Dividends declared, amount | ¥ (595,779) | |
| Class A Ordinary Shares [Member] | ||
| Dividends declared per share | (per share) | ¥ 5.08 | $ 0.76 |
| Class A Ordinary Shares [Member] | Ordinary shares | ||
| Dividends declared, amount | ¥ 595,779 | $ 91,570 |