v3.3.1.900
Investments - Realized Gains (Losses) on Investment (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Gain (Loss) on Investments [Line Items]        
Gross gains $ 3,041 $ 1,773 $ 5,786  
Gross losses (543) (610) (2,201)  
Realized gains (losses), Net 2,498 1,163 3,585  
Proceeds from sales of fixed maturities classified as available-for-sale 129,152 171,216 355,863  
Net unrealized (losses) gains (54,028) 78,749   $ 34,845
Deferred income tax (84) (170)   (117)
Net unrealized (losses) gains, net of deferred income tax (54,112) 78,579   34,728
Change in net unrealized gains, net of deferred income tax (132,691) 43,851 (108,937)  
Other investments        
Gain (Loss) on Investments [Line Items]        
Gross gains 192 439 188  
Gross losses 0 0 0  
Realized gains (losses), Net 192 439 188  
Net unrealized (losses) gains 996 1,709   570
Fixed maturities | Available-for-sale securities        
Gain (Loss) on Investments [Line Items]        
Gross gains 2,849 1,334 5,598  
Gross losses (543) (610) (2,201)  
Realized gains (losses), Net 2,306 724 $ 3,397  
Net unrealized (losses) gains $ (55,024) $ 77,040   $ 34,275