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Summary of Significant Accounting Policies (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Deferred policy acquisition costs asset by segment      
Total $ 196,885 $ 216,456 $ 222,177
Annuity [Member]
      
Deferred policy acquisition costs asset by segment      
Total 125,437 139,316  
Life [Member]
      
Deferred policy acquisition costs asset by segment      
Total 46,798 54,234  
Property and casualty [Member]
      
Deferred policy acquisition costs asset by segment      
Total $ 24,650 $ 22,906