XML 51 R33.htm IDEA: XBRL DOCUMENT v3.7.0.1
Investments - Distribution of Fixed Maturity Securities by Expected Maturity (Details) - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2017
Dec. 31, 2016
Percent of Total Fair Value    
Due in 1 year or less, Percent of Total Fair Value 3.60% 3.90%
Due after 1 year through 5 years, Percent of Total Fair Value 27.40% 28.70%
Due after 5 years through 10 years, Percent of Total Fair Value 34.10% 35.20%
Due after 10 years through 20 years, Percent of Total Fair Value 22.80% 19.50%
Due after 20 years, Percent of Total Fair Value 12.10% 12.70%
Total, Percent of Total Fair Value 100.00% 100.00%
Fair Value    
Due in 1 year or less, Fair Value $ 275,005  
Due after 1 year through 5 years, Fair Value 2,079,595  
Due after 5 years through 10 years, Fair Value 2,580,296  
Due after 10 years through 20 years, Fair Value 1,729,382  
Due after 20 years, Fair Value 914,307  
Total, Fair Value 7,578,585 $ 7,456,708
Amortized Cost    
Due in 1 year or less, Amortized Cost 269,431  
Due after 1 year through 5 years, Amortized Cost 1,981,639  
Due after 5 years through 10 years, Amortized Cost 2,478,678  
Due after 10 years through 20 years, Amortized Cost 1,609,894  
Due after 20 years, Amortized Cost 822,275  
Total, Amortized Cost $ 7,161,917 $ 7,152,127
Average option-adjusted duration, in years 6 years 5 years 10 months 25 days