Reinsurance (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Jun. 01, 2012	Dec. 31, 2009
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Reimbursement Rate of Eligible Loss Adjustment Expenses Included in Retention				5.00%
Insurance Commissions and Fees, Flood Program	$ 267,000	$ 377,000	$ 516,000
Reinsurance Recoverable on Unpaid Losses and LAE	1,935,000	3,318,000	23,814,000		23,447,000
Reinsurance Recoverable on Paid Losses and LAE	337,000	1,140,000
Reinsurance Recoverables	2,272,000	4,458,000
Reinsurance Costs and Recoveries, Net	2,753,000	22,278,000	17,447,000
Maximum [Member] | Florida Hurricane Catastrophe Fund [Member] | Mandatory Layer [Member]
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Reinsurance Coverage of Aggregate Value of Property Covered Under Contracts				90.00%
Aggregate Coverage for Covered Losses Under Reinsurance Contract				353,101,000
Catastrophe [Member] | Unaffiliated Private Reinsurers [Member] | Below Mandatory Layer [Member]
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Reinsurance, Losses Not Covered Prior to Coverage Beginning				15,000,000
Catastrophe [Member] | Florida Hurricane Catastrophe Fund [Member]
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Reinsurance, Aggregate Value of Property Covered Under Contracts				392,334,000
Reinsurance, Losses Not Covered Prior to Coverage Beginning				153,332,000
Catastrophe [Member] | Maximum [Member] | Excess-of-Loss of Private and FHCF Coverage [Member]
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Aggregate Coverage for Covered Losses Under Reinsurance Contract				45,886,000
Catastrophe [Member] | Maximum [Member] | Unaffiliated Private Reinsurers [Member] | Below Mandatory Layer [Member]
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Aggregate Coverage for Covered Losses Under Reinsurance Contract				138,332,000
Property Business [Member]
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Reinsurance Agreement, Threshold For Excess Loss Coverage				1,000,000
Resinstatement of Full Coverage In the Event of Exhausted Coverage Due to Loss Recoveries, Percent Additional Premium				50.00%
Property Business [Member] | Maximum [Member]
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Aggregate Coverage for Covered Losses Under Reinsurance Contract				3,400,000
Aggregate Coverage for Covered Losses Under Reinsurance Contract, Excess Coverage Per Million Dollars of Risk				1,700,000
Aggregate Coverage for Covered Losses Under Reinsurance Contract, Excess Coverage Per Million Dollar Occurrence				2,200,000