XML 47 R35.htm IDEA: XBRL DOCUMENT v3.3.1.900
Investments (Fixed Maturities and Equity Securities Excluding Investments Classified as Trading) (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost $ 2,433,626 $ 2,609,253
Fair Value 2,524,272 2,800,593
Amortized Cost 14 14
Fair Value 17 17
Net unrealized gains on impaired securities relating to changes in value of securities subsequent to the impairment measurement date 100 100
Fixed maturities, available-for-sale    
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost   2,609,253
Gross Unrealized Gains 125,359 198,461
Gross Unrealized Losses 34,713 7,121
Fair Value   2,800,593
OTTI in AOCI (42) (85)
Fixed maturities, available-for-sale | U.S. Treasury securities and obligations of U.S. government authorities and agencies    
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 12,233 6,324
Gross Unrealized Gains 28 22
Gross Unrealized Losses 107 10
Fair Value 12,154 6,336
OTTI in AOCI 0 0
Fixed maturities, available-for-sale | Obligations of U.S. states and their political subdivisions    
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 20,116 69,486
Gross Unrealized Gains 474 1,323
Gross Unrealized Losses 378 20
Fair Value 20,212 70,789
OTTI in AOCI 0 0
Fixed maturities, available-for-sale | Foreign government bonds    
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 43,188 29,738
Gross Unrealized Gains 6,123 7,621
Gross Unrealized Losses 28 4
Fair Value 49,283 37,355
OTTI in AOCI 0 0
Fixed maturities, available-for-sale | Public utilities    
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 203,803 198,277
Gross Unrealized Gains 15,969 19,909
Gross Unrealized Losses 4,263 1,593
Fair Value 215,509 216,593
OTTI in AOCI 0 0
Fixed maturities, available-for-sale | All other U.S. public corporate securities    
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 818,627 918,368
Gross Unrealized Gains 52,866 81,539
Gross Unrealized Losses 7,717 1,944
Fair Value 863,776 997,963
OTTI in AOCI 0 0
Fixed maturities, available-for-sale | All other U.S. private corporate securities    
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 494,640 512,793
Gross Unrealized Gains 30,996 48,451
Gross Unrealized Losses 4,407 528
Fair Value 521,229 560,716
OTTI in AOCI 0 0
Fixed maturities, available-for-sale | All other foreign public corporate securities    
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 132,414 110,909
Gross Unrealized Gains 3,781 8,438
Gross Unrealized Losses 608 35
Fair Value 135,587 119,312
OTTI in AOCI 0 0
Fixed maturities, available-for-sale | All other foreign private corporate securities    
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 219,009 201,040
Gross Unrealized Gains 2,487 8,444
Gross Unrealized Losses 15,842 2,384
Fair Value 205,654 207,100
OTTI in AOCI 0 0
Fixed maturities, available-for-sale | Asset-backed securities    
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 149,196 144,324
Gross Unrealized Gains 2,786 5,078
Gross Unrealized Losses 692 391
Fair Value 151,290 149,011
OTTI in AOCI (35) (39)
Fixed maturities, available-for-sale | Commercial mortgage-backed securities    
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 211,429 291,868
Gross Unrealized Gains 4,963 10,523
Gross Unrealized Losses 652 206
Fair Value 215,740 302,185
OTTI in AOCI 0 (10)
Fixed maturities, available-for-sale | Residential mortgage-backed securities    
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 128,971 126,126
Gross Unrealized Gains 4,886 7,113
Gross Unrealized Losses 19 6
Fair Value 133,838 133,233
OTTI in AOCI (7) (36)
Equity securities, available-for-sale    
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 14 14
Gross Unrealized Gains 3 3
Gross Unrealized Losses 0 0
Fair Value 17 17
Equity securities, available-for-sale | Public utilities    
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 0 0
Gross Unrealized Gains 0 0
Gross Unrealized Losses 0 0
Fair Value 0 0
Equity securities, available-for-sale | Mutual funds    
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]    
Amortized Cost 14 14
Gross Unrealized Gains 3 3
Gross Unrealized Losses 0 0
Fair Value $ 17 $ 17