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Restricted Cash - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Homebuilding Operations
   
Restricted Cash and Cash Equivalents Items [Line Items]    
Restricted cash $ 13.5 $ 13.3
PIC
   
Restricted Cash and Cash Equivalents Items [Line Items]    
Restricted cash $ 0.4 $ 0.4