Income Tax (Details 2)
12 Months Ended 24 Months Ended 1 Months Ended 48 Months Ended 36 Months Ended 24 Months Ended 36 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2016
Jan. 31, 2008
Dec. 31, 2014
Dec. 31, 2012
Dec. 31, 2014
Dec. 31, 2016
Income Tax                  
Income tax rate (as a percent) 25.00% 25.00% 25.00%            
Preferential income tax rate (as a percent) 5.00%                
Shanghai CRIC | High and new technology enterprise                  
Income Tax                  
Preferential income tax rate (as a percent)       15.00%          
Shanghai CRIC | Key software enterprises                  
Income Tax                  
Preferential income tax rate (as a percent) 10.00% 10.00%              
The PRC                  
Income Tax                  
Income tax rate (as a percent)         25.00%        
The PRC | Shanghai CRIC | High and new technology enterprise                  
Income Tax                  
Preferential income tax rate (as a percent)           15.00%      
The PRC | Shanghai CRIC | Software enterprise                  
Income Tax                  
Preferential income tax rate (as a percent)             12.50%    
Percentage of tax reduction             50.00%    
The PRC | Shanghai SINA Leju | High and new technology enterprise                  
Income Tax                  
Preferential income tax rate (as a percent)               15.00%  
The PRC | Shanghai SINA Leju | Software enterprise                  
Income Tax                  
Preferential income tax rate (as a percent)             12.50%    
Percentage of tax reduction             50.00%    
The PRC | Shanghai Fangxin information technology Co., Ltd. | Software enterprise                  
Income Tax                  
Preferential income tax rate (as a percent)                 12.50%
Percentage of tax reduction                 50.00%
The PRC | Chongqing E-House Western Real Estate Investment Consultant Co., Ltd.                  
Income Tax                  
Preferential income tax rate (as a percent) 15.00% 15.00% 15.00%            
Hong Kong                  
Income Tax                  
Income tax rate (as a percent) 16.50%                
Macau | Minimum                  
Income Tax                  
Progressive tax rate (as a percent) 0.00%                
Macau | Maximum                  
Income Tax                  
Progressive tax rate (as a percent) 12.00%