Reinsurance Reinsurance - Narrative (Details) (USD $)	0 Months Ended	12 Months Ended
	Jan. 02, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Jun. 01, 2013
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Reimbursement Rate of Eligible Loss Adjustment Expenses Included in Retention					5.00%
Policyholder Benefits and Claims Incurred, Assumed and Ceded		$ 2,521,000	$ 2,753,000
Reinsurance Retention Policy, Excess Retention, Amount Reinsured	500,000
Reinsurance Retention Policy, Amount Retained	500,000
Percentage of Flood Premiums Ceded		100.00%
Insurance Commissions and Fees, Flood Program		570,000	267,000	377,000
Policyholder Benefits and Claims Incurred, Ceded		1,432,000
Unaffiliated Private Reinsurers [Member] | Maximum [Member]
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Aggregate Coverage for Covered Losses Under Reinsurance Contract					360,060,000
Florida Hurricane Catastrophe Fund [Member] | Mandatory Layer [Member] | Maximum [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					441,540,000
Unaffiliated Private Reinsurers [Member] | Excess-of-Loss [Member]
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Reinsurance Coverage, Percentage Placed					100.00%
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					490,600,000
Reinsurance, Losses Not Covered Prior to Coverage Beginning					187,200,000
Catastrophe [Member] | Affiliated Entity [Member]
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Reinsurance Coverage, Percentage Placed					100.00%
Catastrophe [Member] | Affiliated Entity [Member] | Below Mandatory Layer [Member]
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Reinsurance, Losses Not Covered Prior to Coverage Beginning					20,000,000
Catastrophe [Member] | Unaffiliated Private Reinsurers [Member] | Below Mandatory Layer [Member] | Maximum [Member]
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Aggregate Coverage for Covered Losses Under Reinsurance Contract					167,200,000
Catastrophe [Member] | Unaffiliated Private Reinsurers [Member] | Excess-of-Loss [Member] | Maximum [Member]
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Aggregate Coverage for Covered Losses Under Reinsurance Contract					$ 172,860,000