Share-Based Compensation (Details 2) (USD $)
 12 Months Ended 1 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Apr. 30, 2012
Aug. 31, 2014
Dec. 02, 2013
Number of Options            
Exercised (in shares) 3,446,585 4,596,761 194,721      
Weighted average remaining contractual term            
Outstanding at the end of the period 5 years 6 months 29 days          
Aggregate Intrinsic value of options            
Exercised $ 23,679,729          
Outstanding at the end of the period 25,776,635          
E-House Plan | Share Options:            
Number of Options            
Outstanding at the beginning of the period (in shares) 12,949,951          
Exercised (in shares) (3,446,585)          
Forfeited (in shares) (26,662)          
Outstanding at the end of the period (in shares) 9,476,704 12,949,951        
Vested and expected to vest at the end of the period (in shares) 9,476,704          
Exercisable at the end of the period (in shares) 9,476,704          
Weighted Average Exercise Price            
Outstanding at the beginning of the period (in dollars per share) $ 4.25          
Exercised (in dollars per share) $ 3.49          
Forfeited (in dollars per share) $ 4.94          
Outstanding at the end of the period (in dollars per share) $ 4.52 4.25        
Vested and expected to vest at the end of the period (in dollars per share) $ 4.52          
Exercisable at the end of the period (in dollars per share) $ 4.52          
Weighted average remaining contractual term            
Vested and expected to vest at the end of the period 5 years 6 months 29 days          
Exercisable at the end of the period 5 years 6 months 29 days          
Aggregate Intrinsic value of options            
Exercised 23,679,729 25,248,554 436,259      
Outstanding at the end of the period   140,247,969        
Vested and expected to vest at the end of the period 25,776,635          
Exercisable at the end of the period 25,776,635          
Additional disclosure            
Compensation expense 5,950,940 12,817,935 17,157,015      
E-House Plan | Restricted Shares:            
Additional disclosure            
Total fair value of restricted shares vested 6,094,602 5,612,379 9,127,103      
Compensation expense 6,174,583 5,668,460 9,348,941      
Total unrecognized compensation expense 20,310,709          
Weighted-average period over which cost is expected to be recognized 2 years 5 months 5 days          
Leju Plan | Share Options:            
Number of Options            
Outstanding at the beginning of the period (in shares) 6,592,000          
Replaced by Restricted Share (60,000)          
Exercised (in shares) (266,201)          
Forfeited (in shares) (132,000)          
Outstanding at the end of the period (in shares) 6,133,799 6,592,000        
Vested and expected to vest at the end of the period (in shares) 5,943,719          
Exercisable at the end of the period (in shares) 1,867,132          
Weighted Average Exercise Price            
Outstanding at the beginning of the period (in dollars per share) $ 4.60          
Replaced by Restricted Share (in dollars per share) $ 4.60          
Exercised (in dollars per share) $ 4.60          
Forfeited (in dollars per share) $ 4.60          
Outstanding at the end of the period (in dollars per share) $ 4.60 4.60        
Vested and expected to vest at the end of the period (in dollars per share) $ 4.60          
Exercisable at the end of the period (in dollars per share) $ 4.60          
Weighted average remaining contractual term            
Outstanding at the end of the period 8 years 11 months 1 day          
Vested and expected to vest at the end of the period 8 years 11 months 1 day          
Exercisable at the end of the period 8 years 11 months 1 day          
Aggregate Intrinsic value of options            
Exercised 1,668,693          
Outstanding at the end of the period 37,784,202          
Vested and expected to vest at the end of the period 36,613,309          
Exercisable at the end of the period 11,501,535          
Additional disclosure            
Weighted-average grant-date fair value of options granted (in dollars per share)           $ 2.21
Compensation expense 4,525,552 381,874        
Total unrecognized compensation expense 8,676,222          
Weighted-average period over which cost is expected to be recognized 1 year 11 months 1 day          
Leju Plan | Restricted Shares:            
Additional disclosure            
Total fair value of restricted shares vested 486,200 0 0      
Compensation expense 4,923,226 34,758        
Total unrecognized compensation expense 9,699,247          
Weighted-average period over which cost is expected to be recognized 1 year 10 months 17 days          
CRIC Plan | Share Options:            
Aggregate Intrinsic value of options            
Exercised     750,115      
Additional disclosure            
Compensation expense     8,532,772 0    
CRIC Plan | Restricted Shares:            
Additional disclosure            
Total fair value of restricted shares vested     130,000      
Compensation expense     54,688      
Scepter Plan | Share Options:            
Number of Options            
Granted (in shares) 455,000          
Forfeited (in shares) (5,000)          
Outstanding at the end of the period (in shares) 450,000          
Vested and expected to vest at the end of the period (in shares) 449,526          
Weighted Average Exercise Price            
Granted (in dollars per share) $ 3.30       $ 3.30  
Outstanding at the end of the period (in dollars per share) $ 3.30          
Vested and expected to vest at the end of the period (in dollars per share) $ 3.30          
Exercisable at the end of the period (in dollars per share) $ 3.30          
Weighted average remaining contractual term            
Granted 10 years          
Outstanding at the end of the period 9 years 7 months 6 days          
Vested and expected to vest at the end of the period 9 years 7 months 6 days          
Exercisable at the end of the period 9 years 7 months 6 days          
Additional disclosure            
Compensation expense 66,820          
Total unrecognized compensation expense $ 439,892          
Weighted-average period over which cost is expected to be recognized 2 years 7 months 6 days