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Summary Of Significant Accounting Policies (Schedule Of Uncollectible Reinsurance Recoverable And Premium Receivables) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Summary Of Significant Accounting Policies [Abstract]    
Reinsurance recoverable and premium receivables $ 22,878 $ 29,497