CONCENTRATION OF RISK (Details 2)
In Thousands, unless otherwise specified
12 Months Ended 12 Months Ended
Dec. 31, 2013
USD ($)
Dec. 31, 2013
CNY
Dec. 31, 2012
CNY
Dec. 31, 2011
CNY
Dec. 31, 2013
Revenues
Customer risk
Customer A
USD ($)
Dec. 31, 2013
Revenues
Customer risk
Customer A
CNY
Dec. 31, 2012
Revenues
Customer risk
Customer A
CNY
Dec. 31, 2011
Revenues
Customer risk
Customer A
CNY
Dec. 31, 2013
Revenues
Customer risk
Customer B
USD ($)
Dec. 31, 2013
Revenues
Customer risk
Customer B
CNY
Dec. 31, 2013
Revenues
Customer risk
Equal to or more than
Dec. 31, 2012
Revenues
Customer risk
Equal to or more than
Dec. 31, 2011
Revenues
Customer risk
Equal to or more than
Dec. 31, 2012
Revenues
Customer risk
Not greater than
Customer B
Dec. 31, 2011
Revenues
Customer risk
Not greater than
Customer B
Dec. 31, 2013
Accounts receivables
Customer risk
Customer A
USD ($)
Dec. 31, 2013
Accounts receivables
Customer risk
Customer A
CNY
Dec. 31, 2012
Accounts receivables
Customer risk
Customer A
CNY
Dec. 31, 2013
Accounts receivables
Customer risk
Customer C
USD ($)
Dec. 31, 2013
Accounts receivables
Customer risk
Customer C
CNY
Dec. 31, 2013
Accounts receivables
Customer risk
Equal to or more than
Dec. 31, 2012
Accounts receivables
Customer risk
Equal to or more than
Dec. 31, 2012
Accounts receivables
Customer risk
Not greater than
Customer B
CONCENTRATION OF RISK                                              
Threshold for disclosure of risk (as a percent)                     10.00% 10.00% 10.00%               10.00% 10.00%  
Total revenues $ 182,243 1,103,243 813,732 618,422 $ 18,549 112,292 82,663 98,684 $ 26,562 160,582                          
Accounts receivable $ 50,587 306,237 230,199                         $ 7,431 44,987 46,324 $ 5,380 32,571      
Concentration risk (as a percent)                           10.00% 10.00%               10.00%
Minimum period for which the PRC government has been pursuing economic reform policies 20 years 20 years                                          
Percentage of appreciation of the RMB against US$ 2.80% 2.80% 1.00% 4.60%