Share-Based Compensation (Details 3) (USD $)
1 Months Ended 12 Months Ended 0 Months Ended 1 Months Ended 0 Months Ended 1 Months Ended
Sep. 30, 2014
Dec. 31, 2014
Dec. 31, 2006
Dec. 31, 2013
Dec. 31, 2012
Apr. 20, 2012
Nov. 30, 2013
Aug. 21, 2014
Mar. 18, 2014
Aug. 31, 2014
Additional disclosure                    
Additional paid-in capital   $ 991,645,842   $ 859,467,949            
Group of five employees                    
Additional disclosure                    
Weighted-average period over which cost is expected to be recognized 2 years                  
Additional paid-in capital 4,276,810                  
Recognition period of stock based compensation expense 2 years                  
Beijing Leju Advertisement and Yisheng Shanghai                    
Additional disclosure                    
Total unrecognized compensation expense   3,742,209                
Compensation expense   534,601                
Beijing Leju Advertisement and Yisheng Shanghai | Group of five employees                    
Additional disclosure                    
Number of years should serve by five employee individual shareholders after acquisition 2 years                  
E-House Plan                    
Summary of restricted share activity                    
Award vesting period     3 years              
E-House Plan | Restricted Shares:                    
Summary of restricted share activity                    
Award vesting period   3 years                
Unvested at the beginning of the period (in shares)   2,151,684                
Granted (in shares)   1,439,000   1,303,000 1,273,000          
Vested (in shares)   (860,301)                
Forfeited (in shares)   (33,334)                
Unvested at the end of the period (in shares)   2,697,049   2,151,684            
Weighted average grant-date fair value                    
Unvested at the beginning of the period (in dollars per share)   $ 7.77                
Granted (in dollars per share)   $ 8.72                
Vested (in dollars per share)   $ 7.08                
Forfeited (in dollars per share)   $ 7.78                
Unvested at the end of the period (in dollars per share)   $ 8.50   $ 7.77            
Additional disclosure                    
Total fair value of restricted shares vested   6,094,602   5,612,379 9,127,103          
Total unrecognized compensation expense   20,310,709                
Weighted-average period over which cost is expected to be recognized   2 years 5 months 5 days                
Compensation expense   6,174,583   5,668,460 9,348,941          
E-House Plan | E-House Replacement Restricted Shares                    
Summary of restricted share activity                    
Granted (in shares)           77,875        
CRIC Plan | Restricted Shares:                    
Additional disclosure                    
Total fair value of restricted shares vested         130,000          
Compensation expense         54,688          
Leju Plan                    
Summary of restricted share activity                    
Award vesting period             3 years      
Leju Plan | Restricted Shares:                    
Summary of restricted share activity                    
Award vesting period               8 months 3 years  
Unvested at the beginning of the period (in shares)   600,000                
Granted (in shares)   1,095,400           229,400 866,000  
Converted from option (in shares)   60,000                
Vested (in shares)   (220,000)                
Forfeited (in shares)   (8,800)                
Unvested at the end of the period (in shares)   1,526,600   600,000            
Weighted average grant-date fair value                    
Unvested at the beginning of the period (in dollars per share)   $ 2.21                
Granted (in dollars per share)   $ 12.37                
Converted from option (in dollars per share)   $ 2.21                
Vested (in dollars per share)   $ 2.21                
Forfeited (in dollars per share)   $ 16.25                
Unvested at the end of the period (in dollars per share)   $ 9.42   $ 2.21            
Additional disclosure                    
Total fair value of restricted shares vested   486,200   0 0          
Total unrecognized compensation expense   9,699,247                
Weighted-average period over which cost is expected to be recognized   1 year 10 months 17 days                
Compensation expense   $ 4,923,226   $ 34,758            
Scepter Plan                    
Summary of restricted share activity                    
Award vesting period                   3 years