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Real Estate - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Real Estate Properties [Line Items]      
Costs relate to water, sewer and other infrastructure assets $ 17,923 $ 6,432  
Recovery of direct costs (9,945) (8,524) (10,461)
Investment in resort development 519,464 517,150  
Commercial and income producing properties 99,476 100,855  
Non-cash asset impairment charges 1,790 0 11,525
Cibolo Canyons Project [Member]
     
Real Estate Properties [Line Items]      
Recovery of direct costs 600 550  
Investment in resort development 28,118    
Cibolo Canyons Project [Member] | Special Improvement District [Member]
     
Real Estate Properties [Line Items]      
Recovery of direct costs 4,400 2,850  
Cibolo Canyons Project [Member] | San Antonio Texas [Member]
     
Real Estate Properties [Line Items]      
Cost of asset in developed and under development projects 41,795 34,252  
Consolidated Properties [Member]
     
Real Estate Properties [Line Items]      
Recovery of direct costs 5,545 5,674  
Utility and Improvement District [Member]
     
Real Estate Properties [Line Items]      
Cost of asset in developed and under development projects 62,183 50,476  
Decrease cost of assets in developed and under development projects 11,707    
Income Producing Properties [Member] | Oil and Gas Properties [Member]
     
Real Estate Properties [Line Items]      
Depreciation expense, related to commercial and income producing properties $ 2,507 $ 3,640 $ 3,547