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Significant Accounting Policies (Details 1) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Unsecured amounts due from reinsurers whose aggregate balance exceeds 3% of the stockholders equity
Reinsurance Unsecured Amounts due from Reinsurers total	$ 235,334	$ 295,419
Everest Reinsurance Company [Member]
Unsecured amounts due from reinsurers whose aggregate balance exceeds 3% of the stockholders equity
Reinsurance Unsecured Amounts due from Reinsurers total	193,250	264,997
Florida Hurricane Catastrophe Fund [Member]
Unsecured amounts due from reinsurers whose aggregate balance exceeds 3% of the stockholders equity
Reinsurance Unsecured Amounts due from Reinsurers total		30,422
Odyssey Reinsurance Company [Member]
Unsecured amounts due from reinsurers whose aggregate balance exceeds 3% of the stockholders equity
Reinsurance Unsecured Amounts due from Reinsurers total	$ 42,084

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Reinsurance unsecured amounts due from reinsurers.

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