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Real Estate - Additional Information (Detail)
$ in Thousands
3 Months Ended
Mar. 31, 2016
USD ($)
property
Mar. 31, 2015
USD ($)
Dec. 31, 2015
USD ($)
Real Estate Properties [Line Items]      
Gain on sale of assets $ 2,604 $ 1,176  
Real estate assets held for sale 105,987    
Reimbursements from utility and improvement districts (306) $ (4,130)  
Utility and Improvement District [Member]      
Real Estate Properties [Line Items]      
Cost of asset in developed and under development projects 69,770   $ 67,554
Reimbursements from utility and improvement districts 306    
San Antonio Texas | Cibolo Canyons Project      
Real Estate Properties [Line Items]      
Cost of asset in developed and under development projects 22,357   $ 22,302
Cumulative reimbursable cost associated with real estate projects in development 54,376    
Return of reimbursements received in relation to direct costs and expenses previously paid or incurred for development of real estate projects 34,703    
Music Row      
Real Estate Properties [Line Items]      
Real estate property sale price 14,703    
Gain on sale of assets $ 3,968    
Music Row | Multi Family Property      
Real Estate Properties [Line Items]      
Number of units of multifamily project | property 230    
Eleven      
Real Estate Properties [Line Items]      
Number of units of multifamily project | property 257    
Dillon      
Real Estate Properties [Line Items]      
Number of units of multifamily project | property 379