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Investments (Tables)
 6 Months Ended
Jun. 30, 2012
Investments, Debt and Equity Securities [Abstract]  
Realized Investment Gains (Losses), Excluding Impairment Losses
The table below presents realized investment gains and losses, excluding impairment losses, for the periods indicated.

 
Three Months Ended
June 30,
 
Six Months Ended
June 30,
 
2012
 
2011
 
2012
 
2011
 
(In thousands)
 
 
 
 
 
 
 
 
Available for sale debt securities:
 
 
 
 
 
 
 
Realized gains on disposal
$
2,579

 
330

 
4,207

 
3,137

Realized losses on disposal
—

 
—

 
—

 
—

Held to maturity debt securities:


 
 

 


 


Realized gains on disposal
44

 
104

 
160

 
478

Realized losses on disposal
(39
)
 
—

 
(413
)
 
—

Equity securities realized gains (losses)
—

 
56

 
(4
)
 
56

Real estate write-down
(159
)
 
—

 
(159
)
 
(50
)
Mortgage loans write-downs
—

 
—

 
—

 
(39
)
Other
—

 
—

 
—

 
—

 
 
 
 
 
 
 
 
Totals
$
2,425

 
490

 
3,791

 
3,582
Net Impairment Losses Recognized in Earnings
The table below presents net impairment losses recognized in earnings for the periods indicated.

 
Three Months Ended
June 30,
 
Six Months Ended
June 30,
 
2012
 
2011
 
2012
 
2011
 
(In thousands)
 
 
 
 
 
 
 
 
Total other-than-temporary impairment losses on debt securities
$
(156
)
 
—

 
(409
)
 
—

Portion of loss (gain) recognized in comprehensive income
(235
)
 
—

 
(157
)
 
—

 
 
 
 
 
 
 
 
Net impairment losses on debt securities recognized in earnings
(391
)
 
—

 
(566
)
 
—

Equity securities impairments
(29
)
 
—

 
(53
)
 


 
 
 
 
 
 
 
 
Totals
$
(420
)
 
—

 
(619
)
 
—
Credit Losses on Securities, Also Recorded as Non-Credit Other-than-Temporary Impairments in Other Comprehensive Loss
The table below presents a roll forward of credit losses on securities for which the Company also recorded non-credit other-than-temporary impairments in other comprehensive loss.

 
Three Months
 Ended
June 30,
2012
 
Six Months
 Ended
June 30,
2012
 
Twelve Months
Ended
December 31,
2011
 
 
 
(In thousands)

 
 
 
 
 
 
 
 
Beginning balance, cumulative credit losses related to other-than-temporary impairments
$
1,297

 
1,122

 
997

Additions for credit losses not previously recognized in other-than-temporary impairments
391

 
566

 
125

 
 
 
 
 
 
Ending balance, cumulative credit losses related to other-than-temporary impairment
$
1,688

 
1,688

 
1,122
Schedule of Held-to-Maturity Securities
The table below presents amortized costs and fair values of securities held to maturity at December 31, 2011.

 
Securities Held to Maturity
 
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Fair
Value
 
(In thousands)
 
 
 
 
 
 
 
 
Debt securities:
 
 
 
 
 
 
 
U.S. agencies
$
205,464

 
3,519

 
(330
)
 
208,653

U.S. Treasury
1,937

 
648

 
—

 
2,585

States and political subdivisions
358,364

 
27,338

 
(280
)
 
385,422

Foreign governments
9,979

 
927

 
—

 
10,906

Public utilities
685,989

 
77,060

 
(4,498
)
 
758,551

Corporate
2,258,640

 
195,551

 
(14,483
)
 
2,439,708

Mortgage-backed
2,082,650

 
155,413

 
(29
)
 
2,238,034

Home equity
23,815

 
439

 
(1,649
)
 
22,605

Manufactured housing
15,071

 
876

 
(81
)
 
15,866

 
 
 
 
 
 
 
 
Totals
$
5,641,909

 
461,771

 
(21,350
)
 
6,082,330

The table below presents amortized costs and fair values of securities held to maturity at June 30, 2012.

 
Securities Held to Maturity
 
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Fair
Value
 
(In thousands)
 
 
 
 
 
 
 
 
Debt securities:
 
 
 
 
 
 
 
U.S. agencies
$
48,126

 
3,230

 
—

 
51,356

U.S. Treasury
1,938

 
651

 
—

 
2,589

States and political subdivisions
375,771

 
38,491

 
(160
)
 
414,102

Foreign governments
9,983

 
813

 
—

 
10,796

Public utilities
699,854

 
80,557

 
(3,782
)
 
776,629

Corporate
2,588,950

 
231,034

 
(5,305
)
 
2,814,679

Mortgage-backed
1,978,293

 
158,406

 
(40
)
 
2,136,659

Home equity
22,824

 
3,466

 
(1,317
)
 
24,973

Manufactured housing
13,038

 
872

 
(6
)
 
13,904

 
 
 
 
 
 
 
 
Totals
$
5,738,777

 
517,520

 
(10,610
)
 
6,245,687
Schedule of Available-for-Sale Securities
The table below presents amortized costs and fair values of securities available for sale at June 30, 2012.

 
Securities Available for Sale
 
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Fair
Value
 
(In thousands)
 
 
 
 
 
 
 
 
Debt securities:
 
 
 
 
 
 
 
States and political subdivisions
$
4,080

 
22

 
(69
)
 
4,033

Foreign governments
15,138

 
789

 
—

 
15,927

Public utilities
309,684

 
30,600

 
(703
)
 
339,581

Corporate
2,045,526

 
182,476

 
(2,392
)
 
2,225,610

Mortgage-backed
132,199

 
11,616

 
(96
)
 
143,719

Home equity
10,891

 
132

 
(1,841
)
 
9,182

Manufactured housing
6,953

 
655

 
—

 
7,608

 
2,524,471

 
226,290

 
(5,101
)
 
2,745,660

 
 
 
 
 
 
 
 
Equity public
6,344

 
2,845

 
(90
)
 
9,099

 
 
 
 
 
 
 
 
Totals
$
2,530,815

 
229,135

 
(5,191
)
 
2,754,759

The table below presents amortized costs and fair values of securities available for sale at December 31, 2011.

 
Securities Available for Sale
 
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Fair
Value
 
(In thousands)
 
 
 
 
 
 
 
 
Debt securities:
 
 
 
 
 
 
 
States and political subdivisions
$
4,042

 
16

 
(170
)
 
3,888

Foreign governments
20,145

 
588

 
—

 
20,733

Public utilities
327,794

 
32,511

 
(907
)
 
359,398

Corporate
1,881,735

 
155,144

 
(5,839
)
 
2,031,040

Mortgage-backed
163,856

 
12,389

 
(189
)
 
176,056

Home equity
10,887

 
30

 
(2,054
)
 
8,863

Manufactured housing
7,689

 
740

 
—

 
8,429

 
2,416,148

 
201,418

 
(9,159
)
 
2,608,407

 
 
 
 
 
 
 
 
Equity private
195

 
7,923

 
—

 
8,118

Equity public
6,307

 
2,266

 
(145
)
 
8,428

 
 
 
 
 
 
 
 
Totals
$
2,422,650

 
211,607

 
(9,304
)
 
2,624,953
Schedule of Gross Unrealized Losses and Fair Values of Heald-to-Maturity Investments, Continuous Unrealized Loss Position
The following table shows the gross unrealized losses and fair values of the Company's held to maturity investments by investment category and length of time the individual securities have been in a continuous unrealized loss position at December 31, 2011.

 
Securities Held to Maturity
 
Less than 12 Months
 
12 Months or Greater
 
Total
 
Fair
Value
 
Unrealized
Losses
 
Fair
Value
 
Unrealized
Losses
 
Fair
Value
 
Unrealized
Losses
 
(In thousands)
 
 
 
 
 
 
 
 
 
 
 
 
Debt securities:
 
 
 
 
 
 
 
 
 
 
 
U.S. agencies
$
24,985

 
(16
)
 
27,010

 
(314
)
 
51,995

 
(330
)
U.S. Treasury
—

 
—

 
—

 
—

 
—

 
—

States and political subdivisions
805

 
(82
)
 
17,117

 
(198
)
 
17,922

 
(280
)
Foreign governments
—

 
—

 
—

 
—

 
—

 
—

Public utilities
26,509

 
(1,388
)
 
17,242

 
(3,110
)
 
43,751

 
(4,498
)
Corporate
199,934

 
(7,215
)
 
95,975

 
(7,268
)
 
295,909

 
(14,483
)
Mortgage-backed
23,256

 
(29
)
 
—

 
—

 
23,256

 
(29
)
Home equity
—

 
—

 
11,660

 
(1,649
)
 
11,660

 
(1,649
)
Manufactured housing
—

 
—

 
2,436

 
(81
)
 
2,436

 
(81
)
 
 
 
 
 
 
 
 
 
 
 
 
Total temporarily impaired securities
$
275,489

 
(8,730
)
 
171,440

 
(12,620
)
 
446,929

 
(21,350
)
The following table shows the gross unrealized losses and fair values of the Company's held to maturity investments by investment category and length of time the individual securities have been in a continuous unrealized loss position at June 30, 2012.

 
Securities Held to Maturity
 
Less than 12 Months
 
12 Months or Greater
 
Total
 
Fair
Value
 
Unrealized
Losses
 
Fair
Value
 
Unrealized
Losses
 
Fair
Value
 
Unrealized
Losses
 
(In thousands)
 
 
 
 
 
 
 
 
 
 
 
 
Debt securities:
 
 
 
 
 
 
 
 
 
 
 
U.S. agencies
$
—

 
—

 
—

 
—

 
—


—

U.S. Treasury
—

 
—

 
—

 
—

 
—

 
—

States and political subdivisions
4,879

 
(157
)
 
370

 
(3
)
 
5,249

 
(160
)
Foreign governments
—

 
—

 
—

 
—

 
—

 
—

Public utilities
41,660

 
(909
)
 
17,477

 
(2,873
)
 
59,137

 
(3,782
)
Corporate
187,310

 
(2,526
)
 
44,267

 
(2,779
)
 
231,577

 
(5,305
)
Mortgage-backed
2,906

 
(40
)
 
—

 
—

 
2,906

 
(40
)
Home equity
744

 
(137
)
 
11,840

 
(1,180
)
 
12,584

 
(1,317
)
Manufactured housing
345

 
(6
)
 
—

 
—

 
345

 
(6
)
 
 
 
 
 
 
 
 
 
 
 
 
Total temporarily impaired securities
$
237,844

 
(3,775
)
 
73,954

 
(6,835
)
 
311,798

 
(10,610
)
Schedule of Gross Unrealized Losses and Fair Values of Available-for-Sale Investments, Continuous Unrealized Loss Position
The following table shows the gross unrealized losses and fair values of the Company's available for sale investments by investment category and length of time the individual securities have been in a continuous unrealized loss position as of June 30, 2012.

 
Securities Available for Sale
 
Less than 12 Months
 
12 Months or Greater
 
Total
 
Fair
Value
 
Unrealized
Losses
 
Fair
Value
 
Unrealized
Losses
 
Fair
Value
 
Unrealized
Losses
 
(In thousands)
 
 
 
 
 
 
 
 
 
 
 
 
Debt securities:
 
 
 
 
 
 
 
 
 
 
 
U.S. agencies
$
—

 
—

 
—

 
—

 
—

 
—

U.S. Treasury
—

 
—

 
—

 
—

 
—

 
—

States and political subdivisions
1,392

 
(69
)
 
—

 
—

 
1,392

 
(69
)
Foreign governments
—

 
—

 
—

 
—

 
—

 
—

Public utilities
8,449

 
(703
)
 
—

 
—

 
8,449

 
(703
)
Corporate
86,094

 
(517
)
 
30,082

 
(1,875
)
 
116,176

 
(2,392
)
Mortgage-backed
3,834

 
(96
)
 
—

 
—

 
3,834

 
(96
)
Home equity
—

 
—

 
5,564

 
(1,841
)
 
5,564

 
(1,841
)
Manufactured housing
—

 
—

 
—

 
—

 
—

 
—

 
99,769

 
(1,385
)
 
35,646

 
(3,716
)
 
135,415

 
(5,101
)
 
 
 
 
 
 
 
 
 
 
 
 
Equity public
357

 
(19
)
 
370

 
(71
)
 
727

 
(90
)
 
 
 
 
 
 
 
 
 
 
 
 
Total temporarily impaired securities
$
100,126

 
(1,404
)
 
36,016

 
(3,787
)
 
136,142

 
(5,191
)
The following table shows the gross unrealized losses and fair values of the Company's available for sale investments by investment category and length of time the individual securities have been in a continuous unrealized loss position at December 31, 2011.

 
Securities Available for Sale
 
Less than 12 Months
 
12 Months or Greater
 
Total
 
Fair
Value
 
Unrealized
Losses
 
Fair
Value
 
Unrealized
Losses
 
Fair
Value
 
Unrealized
Losses
 
(In thousands)
 
 
 
 
 
 
 
 
 
 
 
 
Debt securities:
 
 
 
 
 
 
 
 
 
 
 
U.S. agencies
$
—

 
—

 
2,257

 
(170
)
 
2,257

 
(170
)
U.S. Treasury
—

 
—

 
—

 
—

 
—

 
—

States and political subdivisions
19,314

 
(907
)
 
—

 
—

 
19,314

 
(907
)
Foreign governments
—

 
—

 
—

 
—

 
—

 
—

Public utilities
—

 
—

 
—

 
—

 
—

 
—

Corporate
100,584

 
(4,009
)
 
20,944

 
(1,830
)
 
121,528

 
(5,839
)
Mortgage-backed
3,950

 
(189
)
 
—

 
—

 
3,950

 
(189
)
Home equity
—

 
—

 
5,351

 
(2,054
)
 
5,351

 
(2,054
)
Manufactured housing
—

 
—

 
—

 
—

 
—

 
—

 
123,848

 
(5,105
)
 
28,552

 
(4,054
)
 
152,400

 
(9,159
)
 
 
 
 
 
 
 
 
 
 
 
 
Equity public
722

 
(84
)
 
299

 
(61
)
 
1,021

 
(145
)
 
 
 
 
 
 
 
 
 
 
 
 
Total temporarily impaired securities
$
124,570

 
(5,189
)
 
28,851

 
(4,115
)
 
153,421

 
(9,304
)
Schedule of Mortgage Loans by Loan-to-Value Ratio
The following table represents the loan-to-value ratio using the most recent appraised value.

 
June 30, 2012
 
December 31, 2011
 
Amount
 
%
 
Amount
 
%
 
(In thousands)
 
 
 
(In thousands)
 
 
 
 
 
 
 
 
 
 
Mortgage Loans by Loan-to-Value Ratio (1):
 
 
 
 
 
 
 
Less than 50%
62,711

 
47.3
%
 
68,048

 
43.2
%
50% to 60%
15,617

 
11.8
%
 
32,091

 
20.4
%
60% to 70%
25,787

 
19.4
%
 
25,692

 
16.3
%
70% to 80%
4,978

 
3.8
%
 
5,505

 
3.5
%
80% to 90%
—

 
—
%
 
—

 
—
%
Greater than 90%
23,521

 
17.7
%
 
26,124

 
16.6
%
 
 
 
 
 
 
 
 
Totals
132,614

 
100.0
%
 
157,460

 
100.0
%

(1) Loan-to-Value Ratio using the most recent appraised value.
Schedule of Allowance for Mortgage Loans
The following table represents the mortgage loan allowance for the six months ended June 30, 2012 and the year ended December 31, 2011:
 
June 30, 2012
 
December 31, 2011
 
(In thousands)
 
 
 
 
Balance, beginning of period
$
4,571

 
3,962

Provision
—

 
609

Releases
(4,571
)
 
—

 
 
 
 
Balance, end of period
$
—

 
4,571