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Summary of Significant Accounting Policies (Details 1) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Adjustment to deferred policy acquisition costs amortization expenses      
Total $ (3,085) $ 3,625 $ (1,689)
Annuity [Member]
     
Adjustment to deferred policy acquisition costs amortization expenses      
Total (3,836) 2,466 (2,042)
Life [Member]
     
Adjustment to deferred policy acquisition costs amortization expenses      
Total $ 751 $ 1,159 $ 353