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Fair Value (Details - Valuation Technique and Inputs) (USD $)
In Thousands, unless otherwise specified
9 Months Ended 9 Months Ended 9 Months Ended 9 Months Ended 9 Months Ended 9 Months Ended 9 Months Ended 9 Months Ended 9 Months Ended 9 Months Ended 9 Months Ended 9 Months Ended
Sep. 30, 2012
Dec. 31, 2011
Sep. 30, 2012
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Fair Value Inputs Assets Quantitative Information [Line Items]                                                                                                        
Fair value inputs discount rate                   13.50% 13.50% 13.50%                                                                                
Fair value inputs prepayment rate                           20.00% 20.00% 20.00%                                   0.00% 4.00% 2.70%                                
Fair value inputs comparability adjustments                                           6.00% 6.00% 6.00%                                   (1.40%) (1.40%) (1.40%)   5.60% 5.60% 5.60%        
Fair value inputs entity credit risk           3.00% 4.70% 3.80%           6.90% 11.60% 9.10%   3.90% 12.40% 7.00%           2.80% 4.60% 3.50%   17.50% 17.50% 17.50%   5.00% 10.10% 7.60%                           4.60% 4.60% 4.60%
Fair value inputs revenue multiple                                                           1.600 1.800 1.800                                        
Fair value inputs probability of default                                                                   2.30% 40.00% 17.60%                                
Fair value inputs lag reported net asset value                                                                           100.00% 100.00% 100.00%           100.00% 100.00% 100.00%        
Fair value inputs adjusted lag reported net asset value                                                                           (39.90%) 0.00% (12.20%)                        
Fixed maturities, trading securities $ 14,338,499 $ 13,941,829 $ 646,566 $ 480,530 $ 208,820       $ 6,877       $ 13,051       $ 316,138                                                                      
Equities, trading securities 1,071,528 944,691 27,536 16,165                                 13,372                                       7,093                      
Other Invested Assets Carried At Fair Value 66,432 90,512 76,978 97,027                                         5,593       28,877       27,409                       1,309       14,874      
Funds Held Directly Managed Investments Carried At Fair Value $ 1,061,349 $ 1,057,553 $ 17,865 $ 15,767                                                                 $ 17,536