XML 89 R79.htm IDEA: XBRL DOCUMENT v3.7.0.1
Cash and cash equivalents (Details)
¥ in Thousands, $ in Thousands
Dec. 31, 2016
CNY (¥)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
CNY (¥)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
CNY (¥)
Dec. 31, 2013
CNY (¥)
Cash and cash equivalents [Line Items]            
Cash and cash equivalents ¥ 1,579,743 $ 227,530 ¥ 928,934 $ 133,794 ¥ 475,028 ¥ 729,598
RMB [Member]            
Cash and cash equivalents [Line Items]            
Cash and cash equivalents 1,536,947   450,802      
US$ [Member]            
Cash and cash equivalents [Line Items]            
Cash and cash equivalents ¥ 42,796 $ 6,171 ¥ 478,132 $ 73,632