XML 69 R56.htm IDEA: XBRL DOCUMENT v3.8.0.1
Investments (Unrealized Gains on Investments) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Net unrealized gains $ 124,679 $ 64,804 $ 69,224
Deferred income tax expense (44,103) (22,681) (24,228)
Net unrealized gains, net of deferred income tax 80,576 42,123 44,996
Increase (decrease) in net unrealized gains in OCI, net of deferred income tax 38,453 (2,873) (35,398)
AFS Fixed Income Securities [Member]      
Net unrealized gains 85,806 38,781 55,689
Equity Securities [Member]      
Net unrealized gains 38,894 25,864 13,235
Available-for-sale Securities [Member]      
Net unrealized gains 124,700 64,645 68,924
Total HTM Securities [Member]      
Net unrealized gains $ (21) $ 159 $ 300