XML 94 R79.htm IDEA: XBRL DOCUMENT v3.8.0.1
Fair Value Measurements (Assets and Liabilities Measured at Fair Value on a Recurring Basis Using Level 3 Inputs) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance $ (13,004) $ 1,719
Total unrealized gains (losses)    
Purchases   (13,444)
Settlements   (7,500)
Ending balance   (13,004)
Included in net investment income    
Total unrealized gains (losses)    
Included in income   (118)
Included in other income    
Total unrealized gains (losses)    
Included in income   6,339
Other assets and (liabilities)    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance (13,004) (5,899)
Total unrealized gains (losses)    
Purchases (354) (13,444)
Settlements (5,937) 0
Ending balance (2,952) (13,004)
Other assets and (liabilities) | Included in net investment income    
Total unrealized gains (losses)    
Included in income   0
Other assets and (liabilities) | Included in other income    
Total unrealized gains (losses)    
Included in income 3,761 6,339
Fixed maturity investments    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance $ 0 7,618
Total unrealized gains (losses)    
Purchases   0
Settlements   (7,500)
Ending balance   0
Fixed maturity investments | Included in net investment income    
Total unrealized gains (losses)    
Included in income   (118)
Fixed maturity investments | Included in other income    
Total unrealized gains (losses)    
Included in income   $ 0