SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 3)
1 Months Ended 12 Months Ended
Sep. 30, 2012
Dec. 31, 2013
USD ($)
segment
class
indicator
Dec. 31, 2013
CNY
indicator
segment
Dec. 31, 2012
CNY
indicator
Dec. 31, 2011
CNY
Impairment of long-lived assets and intangible assets          
Number of indicators of impairment for long-lived assets   0 0 0  
Investments          
Impairment of an available for sales   $ 201,000 1,217,000 0 0
Revenue recognition          
Number of class of services portfolio of content and application delivery to total solutions provided within   1 1    
Term of master service agreement   1 year 1 year    
Term of renewal option of master service agreement   1 year 1 year    
Revenue recognition          
Business tax expenses and related surcharges   3,949,000 23,906,000 26,377,000 24,215,000
Value-added tax 6.00%        
Business tax rate (as a percent) 5.00%        
Advertising expenditures          
Advertising expenditures, included in sales and marketing expenses   13,000 81,000 2,196,000 3,159,000
Government grants          
Unrestricted grant received   170,000 1,031,000 1,262,000 0
Share-based compensation          
Estimated forfeiture rate for management group and the non-management group   0.00% 0.00% 0.00% 0.00%
Segment reporting          
Number of reportable segment   1 1    
Number of geographical segments   0 0    
Employee benefits          
Employee benefits incurred under defined contribution plans   $ 6,778,000 41,036,000 22,064,000 12,939,000