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Significant real estate transactions (In Millions) (Details) (USD $)
Mar. 31, 2014
Mar. 26, 2014
Feb. 06, 2014
Significant real estate transactions      
TCI sold apartment complex (No of units)     232
TCI sold apartment complex (No of acres)   6.314  
Sale price   $ 1.7 $ 23.1
Existing debt secured by the property   $ 6.6 $ 16.5
Recorded a gain on the sale   $ 0.8 $ 6.1
Acres of Land Valwood (Acers) 16.87    
Purchase price $ 3.2