Taxation (Details) - CNY (¥)
¥ in Thousands
3 Months Ended 5 Months Ended 7 Months Ended 9 Months Ended 12 Months Ended 13 Months Ended 16 Months Ended 19 Months Ended 24 Months Ended 35 Months Ended 37 Months Ended
Dec. 31, 2015
Dec. 31, 2015
Dec. 31, 2015
Dec. 31, 2015
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Jan. 31, 2013
Dec. 31, 2013
Dec. 31, 2015
Dec. 31, 2015
Dec. 31, 2015
Sep. 30, 2015
Business Tax, Value Added Tax and Surcharges                          
Business tax and surcharges         ¥ 18,244 ¥ 16,345 ¥ 17,090            
Shanghai Miyuan                          
Transition from PRC Business Tax to PRC Value Added Tax                          
Value Added Tax rate (as a percent)               3.00%       6.00%  
Beijing Miyuan                          
Transition from PRC Business Tax to PRC Value Added Tax                          
Value Added Tax rate (as a percent)                 3.00%   6.00%    
Beijing Aizhenxin                          
Transition from PRC Business Tax to PRC Value Added Tax                          
Value Added Tax rate (as a percent) 6.00%                       3.00%
Shanghai HQS                          
Transition from PRC Business Tax to PRC Value Added Tax                          
Value Added Tax rate (as a percent)                   6.00%      
Beijing Youyue Hudong                          
Transition from PRC Business Tax to PRC Value Added Tax                          
Value Added Tax rate (as a percent)       3.00%                  
Beijing Caiyuanlai                          
Transition from PRC Business Tax to PRC Value Added Tax                          
Value Added Tax rate (as a percent)     3.00%                    
Shanghai Tengwan                          
Transition from PRC Business Tax to PRC Value Added Tax                          
Value Added Tax rate (as a percent) 3.00%                        
Xique                          
Transition from PRC Business Tax to PRC Value Added Tax                          
Value Added Tax rate (as a percent)   3.00%                      
Minimum                          
Business Tax, Value Added Tax and Surcharges                          
Business tax and surcharges rate (as a percent)         0.00%                
Maximum                          
Business Tax, Value Added Tax and Surcharges                          
Business tax and surcharges rate (as a percent)         8.65%