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Investments In Fixed Maturity Securities
 9 Months Ended
Sep. 30, 2015
Debt Securities [Member]  
Schedule of Marketable Securities [Line Items]  
Investments In Fixed Maturity Securities
Investments in Fixed Maturity Securities
At September 30, 2015 and December 31, 2014, investments in fixed maturity securities were as follows:
 
(In thousands)
Amortized
Cost
 
Gross Unrealized
 
Fair
Value
 
Carrying
Value
Gains
 
Losses
 
September 30, 2015
 
 
 
 
 
 
 
 
 
Held to maturity:
 
 
 
 
 
 
 
 
 
State and municipal
$
76,065

 
$
15,824

 
$
—

 
$
91,889

 
$
76,065

Residential mortgage-backed
20,025

 
2,637

 
—

 
22,662

 
20,025

Corporate
5,000

 
65

 
—

 
5,065

 
5,000

Total held to maturity
101,090

 
18,526

 
—

 
119,616

 
101,090

Available for sale:
 
 
 
 
 
 
 
 
 
U.S. government and government agency
641,696

 
32,748

 
(1,476
)
 
672,968

 
672,968

State and municipal:
 
 
 
 
 
 
 
 
 
Special revenue
2,476,539

 
104,030

 
(4,848
)
 
2,575,721

 
2,575,721

State general obligation
602,995

 
28,828

 
(4,511
)
 
627,312

 
627,312

Pre-refunded
442,026

 
34,132

 
—

 
476,158

 
476,158

Corporate backed
385,972

 
13,156

 
(709
)
 
398,419

 
398,419

Local general obligation
321,376

 
24,968

 
(197
)
 
346,147

 
346,147

Total state and municipal
4,228,908

 
205,114

 
(10,265
)
 
4,423,757

 
4,423,757

Mortgage-backed securities:
 
 
 
 
 
 
 
 
 
Residential (1)
1,038,903

 
27,601

 
(7,084
)
 
1,059,420

 
1,059,420

Commercial
67,003

 
1,236

 
(35
)
 
68,204

 
68,204

Total mortgage-backed securities
1,105,906

 
28,837

 
(7,119
)
 
1,127,624

 
1,127,624

Corporate:
 
 
 
 
 
 
 
 
 
Industrial
1,888,762

 
80,342

 
(17,257
)
 
1,951,847

 
1,951,847

Asset-backed
1,634,056

 
17,722

 
(11,681
)
 
1,640,097

 
1,640,097

Financial
1,264,970

 
35,728

 
(11,980
)
 
1,288,718

 
1,288,718

Utilities
187,325

 
10,549

 
(1,549
)
 
196,325

 
196,325

Other
80,796

 
446

 
(18
)
 
81,224

 
81,224

Total corporate
5,055,909

 
144,787

 
(42,485
)
 
5,158,211

 
5,158,211

Foreign
854,313

 
46,433

 
(16,077
)
 
884,669

 
884,669

Total available for sale
11,886,732

 
457,919

 
(77,422
)
 
12,267,229

 
12,267,229

Total investments in fixed maturity securities
$
11,987,822

 
$
476,445

 
$
(77,422
)
 
$
12,386,845

 
$
12,368,319

(In thousands)
Amortized
Cost
 
Gross Unrealized
 
Fair
Value
 
Carrying
Value
Gains
 
Losses
December 31, 2014
 
 
 
 
 
 
 
 
 
Held to maturity:
 
 
 
 
 
 
 
 
 
State and municipal
$
72,901

 
$
17,501

 
$
—

 
$
90,402

 
$
72,901

Residential mortgage-backed
23,278

 
2,854

 
—

 
26,132

 
23,278

Corporate
4,998

 
291

 
—

 
5,289

 
4,998

Total held to maturity
101,177

 
20,646

 
—

 
121,823

 
101,177

Available for sale:
 
 
 
 
 
 
 
 
 
U.S. government and government agency
773,192

 
33,353

 
(3,157
)
 
803,388

 
803,388

State and municipal:
 
 
 
 
 
 
 
 
 
Special revenue
2,264,210

 
111,841

 
(2,084
)
 
2,373,967

 
2,373,967

State general obligation
674,022

 
37,615

 
(787
)
 
710,850

 
710,850

Pre-refunded
504,778

 
35,619

 
(289
)
 
540,108

 
540,108

Corporate backed
413,234

 
18,976

 
(855
)
 
431,355

 
431,355

Local general obligation
281,622

 
25,099

 
(5
)
 
306,716

 
306,716

Total state and municipal
4,137,866

 
229,150

 
(4,020
)
 
4,362,996

 
4,362,996

Mortgage-backed securities:
 
 
 
 
 
 
 
 
 
Residential (1)
1,201,924

 
27,124

 
(9,449
)
 
1,219,599

 
1,219,599

Commercial
74,479

 
1,610

 
(52
)
 
76,037

 
76,037

Total mortgage-backed securities
1,276,403

 
28,734

 
(9,501
)
 
1,295,636

 
1,295,636

Corporate:
 
 
 
 
 
 
 
 
 
Asset-backed
2,019,032

 
18,868

 
(11,974
)
 
2,025,926

 
2,025,926

Industrial
1,606,724

 
117,206

 
(5,131
)
 
1,718,799

 
1,718,799

Financial
1,140,801

 
38,080

 
(7,673
)
 
1,171,208

 
1,171,208

Utilities
184,107

 
12,436

 
(1
)
 
196,542

 
196,542

Other
86,294

 
1,370

 
(2
)
 
87,662

 
87,662

Total corporate
5,036,958

 
187,960

 
(24,781
)
 
5,200,137

 
5,200,137

Foreign
897,668

 
62,223

 
(18,065
)
 
941,826

 
941,826

Total available for sale
12,122,087

 
541,420

 
(59,524
)
 
12,603,983

 
12,603,983

Total investments in fixed maturity securities
$
12,223,264

 
$
562,066

 
$
(59,524
)
 
$
12,725,806

 
$
12,705,160

____________
(1)
Gross unrealized losses for residential mortgage-backed securities include $1,023,313 and $1,095,671 as of September 30, 2015 and December 31, 2014, respectively, related to the non-credit portion of other-than-temporary impairments (“OTTI”) recognized in accumulated other comprehensive income.

The amortized cost and fair value of fixed maturity securities at September 30, 2015, by contractual maturity, are shown below. Actual maturities may differ from contractual maturities because certain issuers may have the right to call or prepay obligations. 
(In thousands)
Amortized
Cost
 
Fair Value
Due in one year or less
$
872,912

 
$
884,845

Due after one year through five years
3,896,880

 
4,043,852

Due after five years through ten years
3,572,074

 
3,706,649

Due after ten years
2,520,025

 
2,601,213

Mortgage-backed securities
1,125,931

 
1,150,286

Total
$
11,987,822

 
$
12,386,845


At September 30, 2015, there were no investments that exceeded 10% of common stockholders’ equity, other than investments in United States government and government agency securities,