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Insurance Operations (Details)
Mar. 31, 2013
Dec. 31, 2012
In Florida [Member]
   
Composition of Insurance Entities' aggregate policies-in-force    
Percentage of Policies-In-Force 95.00% 96.00%
With wind coverage [Member]
   
Composition of Insurance Entities' aggregate policies-in-force    
Percentage of Policies-In-Force 98.00% 98.00%
With wind coverage in South Florida [Member]
   
Composition of Insurance Entities' aggregate policies-in-force    
Percentage of Policies-In-Force 28.00% 28.00%