Reinsurance (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Components of reinsurance recoverables
Reinsurance recoverable on paid losses	$ 54,675	$ 83,109
Reinsurance recoverable on outstanding losses	479,026	477,760
Reinsurance recoverable on incurred but not reported losses	539,021	497,074
Reserve for uncollectible reinsurance	(1,500)	(1,875)	(2,493)	(2,945)
Total reinsurance recoverables	$ 1,071,222	$ 1,056,068

The sum for all reinsurance arrangements of the known and estimated amount recoverable as of the balance sheet date from a given reinsurer for claims paid or incurred by the ceding insurer and associated claims settlement expenses for each reinsurance arrangement (or, the sum of all cases determined individually, probably applying different assumptions to each arrangement).

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The portion of reinsurance receivables representing the aggregate amount of estimated amounts due as of the balance sheet date from another insurer; also called reinsurance recoverables or unpaid losses recoverable, that are expected based upon statistical projections of incurred claims and claims settlement expenses which have not yet been reported to the insurer.

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- Definition

Receivables currently due from reinsurers for ceded claims paid.

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- Definition

The known and estimated amount recoverable as of the balance sheet date from reinsurers for claims paid or incurred by the ceding insurer and associated claims settlement expenses, including estimated amounts for claims incurred but not reported, and policy benefits, net of any related valuation allowance.

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