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Investments
6 Months Ended
Jun. 30, 2018
Investments [Abstract]  
Investments
INVESTMENTS

Fixed Maturity Securities

The following tables set forth information relating to fixed maturity securities (excluding investments classified as trading), as of the dates indicated:
 
June 30, 2018
 
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Fair
Value
 
OTTI
in AOCI(3)
 
(in thousands)
Fixed maturities, available-for-sale:
 
 
 
 
 
 
 
 
 
U.S. Treasury securities and obligations of U.S. government authorities and agencies
$
71,833

 
$
2,510

 
$
14

 
$
74,329

 
$
0

Obligations of U.S. states and their political subdivisions
596,503

 
19,469

 
1,230

 
614,742

 
0

Foreign government bonds
188,004

 
1,942

 
8,386

 
181,560

 
0

Public utilities
711,017

 
29,051

 
10,013

 
730,055

 
0

Redeemable preferred stock
4,096

 
657

 
18

 
4,735

 
0

All other U.S. public corporate securities
1,358,029

 
42,455

 
33,675

 
1,366,809

 
0

All other U.S. private corporate securities
685,544

 
6,312

 
12,448

 
679,408

 
0

All other foreign public corporate securities
243,884

 
4,597

 
8,778

 
239,703

 
0

All other foreign private corporate securities
775,375

 
16,922

 
21,808

 
770,489

 
0

Asset-backed securities(1)
171,018

 
2,004

 
195

 
172,827

 
(99
)
Commercial mortgage-backed securities
282,300

 
1,644

 
5,836

 
278,108

 
0

Residential mortgage-backed securities(2)
101,391

 
1,706

 
1,318

 
101,779

 
(195
)
Total fixed maturities, available-for-sale
$
5,188,994

 
$
129,269

 
$
103,719

 
$
5,214,544

 
$
(294
)

(1)
Includes credit-tranched securities collateralized by loan obligations, sub-prime mortgages, auto loans, education loans and other asset types.
(2)
Includes publicly-traded agency pass-through securities and collateralized mortgage obligations.
(3)
Represents the amount of unrealized losses remaining in AOCI, from the impairment measurement date. Amount excludes $0.4 million of net unrealized gains on impaired available-for-sale securities relating to changes in the value of such securities subsequent to the impairment measurement date.

 
December 31, 2017
 
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Fair
Value
 
OTTI
in AOCI(3)
 
(in thousands)
Fixed maturities, available-for-sale:
 
 
 
 
 
 
 
 
 
U.S. Treasury securities and obligations of U.S. government authorities and agencies
$
95,851

 
$
3,964

 
$
0

 
$
99,815

 
$
0

Obligations of U.S. states and their political subdivisions
597,254

 
38,204

 
0

 
635,458

 
0

Foreign government bonds
128,058

 
7,536

 
496

 
135,098

 
0

Public utilities
677,702

 
61,588

 
1,058

 
738,232

 
0

Redeemable preferred stock
4,053

 
957

 
0

 
5,010

 
0

All other U.S. public corporate securities
1,254,140

 
105,524

 
2,580

 
1,357,084

 
(215
)
All other U.S. private corporate securities
710,424

 
18,306

 
1,644

 
727,086

 
0

All other foreign public corporate securities
168,399

 
12,522

 
732

 
180,189

 
0

All other foreign private corporate securities
737,037

 
41,405

 
9,598

 
768,844

 
0

Asset-backed securities(1)
179,935

 
2,519

 
26

 
182,428

 
(138
)
Commercial mortgage-backed securities
320,223

 
5,148

 
2,539

 
322,832

 
0

Residential mortgage-backed securities(2)
68,868

 
2,527

 
169

 
71,226

 
(220
)
Total fixed maturities, available-for-sale
$
4,941,944

 
$
300,200

 
$
18,842

 
$
5,223,302

 
$
(573
)

(1)
Includes credit-tranched securities collateralized by loan obligations, sub-prime mortgages, auto loans, education loans and other asset types.
(2)
Includes publicly-traded agency pass-through securities and collateralized mortgage obligations.
(3)
Represents the amount of unrealized losses remaining in AOCI, from the impairment measurement date. Amount excludes $2.2 million of net unrealized gains on impaired available-for-sale securities relating to changes in the value of such securities subsequent to the impairment measurement date.

The following tables set forth the fair value and gross unrealized losses aggregated by investment category and length of time that individual fixed maturity securities had been in a continuous unrealized loss position, as of the dates indicated:

 
June 30, 2018
 
Less Than Twelve Months
 
Twelve Months or More
 
Total
 
Fair Value  
 
Gross
  Unrealized  
Losses
 
Fair Value  
 
Gross
  Unrealized  
Losses
 
Fair Value  
 
Gross
  Unrealized  
Losses
 
(in thousands)
Fixed maturities, available-for-sale:
 
 
 
 
 
 
 
 
 
 
 
U.S. Treasury securities and obligations of U.S. government authorities and agencies
$
621

 
$
14

 
$
0

 
$
0

 
$
621

 
$
14

Obligations of U.S. states and their political subdivisions
102,109

 
1,230

 
0

 
0

 
102,109

 
1,230

Foreign government bonds
143,401

 
7,096

 
11,721

 
1,290

 
155,122

 
8,386

Public utilities
283,552

 
8,082

 
17,233

 
1,931

 
300,785

 
10,013

Redeemable preferred stock
1,791

 
18

 
0

 
0

 
1,791

 
18

All other U.S. public corporate securities
600,364

 
25,564

 
89,649

 
8,111

 
690,013

 
33,675

All other U.S. private corporate securities
389,065

 
9,928

 
41,258

 
2,520

 
430,323

 
12,448

All other foreign public corporate securities
151,899

 
7,925

 
6,656

 
853

 
158,555

 
8,778

All other foreign private corporate securities
300,641

 
10,470

 
58,167

 
11,338

 
358,808

 
21,808

Asset-backed securities
47,033

 
190

 
332

 
5

 
47,365

 
195

Commercial mortgage-backed securities
126,345

 
2,968

 
42,853

 
2,868

 
169,198

 
5,836

Residential mortgage-backed securities
65,326

 
1,026

 
5,529

 
292

 
70,855

 
1,318

Total fixed maturities, available-for-sale
$
2,212,147

 
$
74,511

 
$
273,398

 
$
29,208

 
$
2,485,545

 
$
103,719


 
December 31, 2017
 
Less Than Twelve Months
 
Twelve Months or More
 
Total
 
Fair Value  
 
Gross
  Unrealized  
Losses
 
Fair Value  
 
Gross
  Unrealized  
Losses
 
Fair Value  
 
Gross
  Unrealized  
Losses
 
(in thousands)
Fixed maturities, available-for-sale:
 
 
 
 
 
 
 
 
 
 
 
U.S. Treasury securities and obligations of
U.S. government authorities and agencies
$
0

 
$
0

 
$
0

 
$
0

 
$
0

 
$
0

Obligations of U.S. states and their political subdivisions
0

 
0

 
0

 
0

 
0

 
0

Foreign government bonds
16,522

 
210

 
11,959

 
286

 
28,481

 
496

Public utilities
26,466

 
380

 
27,354

 
678

 
53,820

 
1,058

Redeemable preferred stock
0

 
0

 
0

 
0

 
0

 
0

All other U.S. public corporate securities
36,100

 
304

 
102,490

 
2,276

 
138,590

 
2,580

All other U.S. private corporate securities
79,495

 
781

 
36,642

 
863

 
116,137

 
1,644

All other foreign public corporate securities
27,078

 
190

 
8,390

 
542

 
35,468

 
732

All other foreign private corporate securities
48,109

 
472

 
133,055

 
9,126

 
181,164

 
9,598

Asset-backed securities
6,351

 
22

 
317

 
4

 
6,668

 
26

Commercial mortgage-backed securities
49,823

 
285

 
93,403

 
2,254

 
143,226

 
2,539

Residential mortgage-backed securities
8,030

 
28

 
6,160

 
141

 
14,190

 
169

Total fixed maturities, available-for-sale
$
297,974

 
$
2,672

 
$
419,770

 
$
16,170

 
$
717,744

 
$
18,842



As of June 30, 2018 and December 31, 2017, the gross unrealized losses on fixed maturity securities were composed of $91.4 million and $13.9 million, respectively, related to "1" highest quality or "2" high quality securities based on the National Association of Insurance Commissioners (“NAIC”) or equivalent rating and $12.3 million and $4.9 million, respectively, related to other than high or highest quality securities based on NAIC or equivalent rating. As of June 30, 2018, the $29.2 million of gross unrealized losses on fixed maturity securities of twelve months or more were concentrated in the Company's corporate securities within the energy, finance and consumer non-cyclical sectors and in commercial mortgage-backed securities. As of December 31, 2017, the $16.2 million of gross unrealized losses on fixed maturity securities of twelve months or more were concentrated in commercial mortgage backed securities and in the Company's corporate securities within the energy and finance sectors. In accordance with its policy described in Note 2 to the Consolidated Financial Statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2017, the Company concluded that an adjustment to earnings for OTTI for these fixed maturity securities was not warranted at either June 30, 2018 or December 31, 2017. These conclusions were based on a detailed analysis of the underlying credit and cash flows on each security. Gross unrealized losses are primarily attributable to general credit spread widening, increases in interest rates and foreign currency exchange rate movements. As of June 30, 2018, the Company did not intend to sell these securities, and it was not more likely than not that the Company would be required to sell these securities before the anticipated recovery of the remaining amortized cost basis.

The following table sets forth the amortized cost and fair value of fixed maturities by contractual maturities, as of the date indicated:

 
June 30, 2018
 
Amortized Cost
 
Fair Value
 
(in thousands)
Fixed maturities, available-for-sale:
 
 
 
Due in one year or less
$
138,874

 
$
140,388

Due after one year through five years
729,234

 
725,360

Due after five years through ten years
1,008,886

 
1,004,600

Due after ten years
2,757,291

 
2,791,482

Asset-backed securities
171,018

 
172,827

Commercial mortgage-backed securities
282,300

 
278,108

Residential mortgage-backed securities
101,391

 
101,779

Total fixed maturities, available-for-sale
$
5,188,994

 
$
5,214,544



Actual maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations. Asset-backed, commercial mortgage-backed and residential mortgage-backed securities are shown separately in the table above, as they do not have a single maturity date.

The following table sets forth the sources of fixed maturity proceeds and related investment gains (losses), as well as losses on impairments of fixed maturities, for the periods indicated:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2018
 
2017
 
2018
 
2017
 
(in thousands)
Fixed maturities, available-for-sale:
 
 
 
 
 
 
 
Proceeds from sales(1)
$
117,235

 
$
139,131

 
$
134,087

 
$
426,839

Proceeds from maturities/prepayments
85,808

 
152,346

 
140,118

 
267,192

Gross investment gains from sales and maturities
(30
)
 
5,823

 
114

 
9,020

Gross investment losses from sales and maturities
(3,231
)
 
(472
)
 
(3,590
)
 
(3,295
)
OTTI recognized in earnings(2)
(57
)
 
(1,121
)
 
(651
)
 
(5,525
)

(1)
Includes $26.2 million and $6.8 million of non-cash related proceeds due to the timing of trade settlements for the six months ended June 30, 2018 and 2017, respectively.
(2)
Excludes the portion of OTTI amounts remaining in “Other comprehensive income (loss)” ("OCI"), representing any difference between the fair value of the impaired debt security and the net present value of its projected future cash flows at the time of the impairment.

The following table sets forth a rollforward of pre-tax amounts remaining in OCI related to fixed maturity securities with credit loss impairments recognized in earnings, for the periods indicated:
 
Three Months Ended June 30, 2018
 
Six Months Ended June 30, 2018
 
Three Months Ended June 30, 2017
 
Six Months Ended June 30, 2017
 
(in thousands)
Credit loss impairments:
 
 
 
 
 
 
 
Balance, beginning of period
$
4,344

 
$
4,374

 
$
5,357

 
$
5,520

New credit loss impairments
0

 
0

 
424

 
424

Additional credit loss impairments on securities previously impaired
0

 
0

 
0

 
0

Increases due to the passage of time on previously recorded credit losses
10

 
47

 
36

 
63

Reductions for securities which matured, paid down, prepaid or were sold during the period
(1,918
)
 
(1,960
)
 
(1,752
)
 
(1,870
)
Reductions for securities impaired to fair value during the period(1)
0

 
0

 
(327
)
 
(327
)
Accretion of credit loss impairments previously recognized due to an increase in cash flows expected to be collected
(454
)
 
(479
)
 
(14
)
 
(86
)
Assets transferred to parent and affiliates
0

 
0

 
0

 
0

Balance, end of period
$
1,982

 
$
1,982

 
$
3,724

 
$
3,724


(1)
Represents circumstances where the Company determined in the current period that it intends to sell the security or it is more likely than not that it will be required to sell the security before recovery of the security's amortized cost.

Equity Securities

The net change in unrealized gains (losses) from equity securities still held at period end, recorded within “Other income,” was $(0.7) million and $0.1 million during the three months ended June 30, 2018 and 2017, respectively.

The net change in unrealized gains (losses) from equity securities still held at period end, recorded within “Other income,” was $(1.9) million and $1.5 million during the six months ended June 30, 2018 and 2017, respectively.



Commercial Mortgage and Other Loans

The following table sets forth the composition of "Commercial mortgage and other loans," as of the dates indicated:
 
June 30, 2018
 
December 31, 2017
 
Amount
(in thousands)
 
% of
Total
 
Amount
(in thousands)
 
% of
Total
Commercial mortgage and agricultural property loans by property type:
 
 
 
 
 
 
 
Apartments/Multi-Family
$
360,812

 
32.0
%
 
$
356,694

 
32.9
%
Hospitality
16,308

 
1.5

 
16,529

 
1.5

Industrial
226,192

 
20.2

 
180,619

 
16.7

Office
173,648

 
15.5

 
159,646

 
14.7

Other
92,895

 
8.3

 
99,119

 
9.1

Retail
186,064

 
16.6

 
205,367

 
18.9

Total commercial mortgage loans
1,055,919

 
94.1

 
1,017,974

 
93.8

Agricultural property loans
66,511

 
5.9

 
67,239

 
6.2

Total commercial mortgage and agricultural property loans by property type
1,122,430

 
100.0
%
 
1,085,213

 
100.0
%
Valuation allowance
(1,788
)
 
 
 
(1,794
)
 
 
Total commercial mortgage and other loans
$
1,120,642

 
 
 
$
1,083,419

 
 


As of June 30, 2018, the commercial mortgage and agricultural property loans were secured by properties geographically dispersed throughout the United States (with the largest concentrations in California (23%), Texas (14%) and New York (6%)) and included loans secured by properties in Europe (6%), Australia (4%) and Mexico (2%).

The following tables set forth the activity in the allowance for credit losses for commercial mortgage and other loans, as of the dates indicated:
 
June 30, 2018
 
Commercial Mortgage Loans
 
Agricultural Property Loans
 
Total
 
(in thousands)
Allowance for credit losses:
 
 
 
 
 
Balance, beginning of year
$
1,728

 
$
66

 
$
1,794

Addition to (release of) allowance for losses
(6
)
 
0

 
(6
)
Charge-offs, net of recoveries
0

 
0

 
0

Total ending balance
$
1,722

 
$
66

 
$
1,788

 
December 31, 2017
 
Commercial Mortgage Loans
 
Agricultural Property Loans
 
Total
 
(in thousands)
Allowance for credit losses:
 
 
 
 
 
Balance, beginning of year
$
1,513

 
$
45

 
$
1,558

Addition to (release of) allowance for losses
215

 
21

 
236

Charge-offs, net of recoveries
0

 
0

 
0

Total ending balance
$
1,728

 
$
66

 
$
1,794



The following tables set forth the allowance for credit losses and the recorded investment in commercial mortgage and other loans, as of the dates indicated:
 
June 30, 2018
 
Commercial Mortgage Loans
 
Agricultural Property Loans
 
Total
 
(in thousands)
Allowance for credit losses:
 
 
 
 
 
Individually evaluated for impairment
$
0

 
$
0

 
$
0

Collectively evaluated for impairment
1,722

 
66

 
1,788

Total ending balance(1)
$
1,722

 
$
66

 
$
1,788

Recorded investment(2):
 
 
 
 
 
Individually evaluated for impairment
$
0

 
$
815

 
$
815

Collectively evaluated for impairment
1,055,919

 
65,696

 
1,121,615

Total ending balance(1)
$
1,055,919

 
$
66,511

 
$
1,122,430


(1)
As of June 30, 2018, there were no loans acquired with deteriorated credit quality.
(2)
Recorded investment reflects the carrying value gross of related allowance.
 
December 31, 2017
 
Commercial Mortgage Loans
 
Agricultural Property Loans
 
Total
 
(in thousands)
Allowance for credit losses:
 
 
 
 
 
Individually evaluated for impairment
$
0

 
$
0

 
$
0

Collectively evaluated for impairment
1,728

 
66

 
1,794

Total ending balance(1)
$
1,728

 
$
66

 
$
1,794

Recorded investment(2):
 
 
 
 
 
Individually evaluated for impairment
$
2,316

 
$
1,153

 
$
3,469

Collectively evaluated for impairment
1,015,658

 
66,086

 
1,081,744

Total ending balance(1)
$
1,017,974

 
$
67,239

 
$
1,085,213


(1)
As of December 31, 2017, there were no loans acquired with deteriorated credit quality.
(2)
Recorded investment reflects the carrying value gross of related allowance.

The following tables set forth certain key credit quality indicators for commercial mortgage and agricultural property loans based upon the recorded investment gross of allowance for credit losses, as of the dates indicated:

 
June 30, 2018
 
Debt Service Coverage Ratio
 
 
 
≥ 1.2X
 
1.0X to < 1.2X
 
< 1.0X
 
Total Loans
 
(in thousands)
Loan-to-Value Ratio:
 
 
 
 
 
 
 
0%-59.99%
$
576,447

 
$
21,980

 
$
0

 
$
598,427

60%-69.99%
358,204

 
19,862

 
1,976

 
380,042

70%-79.99%
126,612

 
17,118

 
0

 
143,730

80% or greater
0

 
231

 
0

 
231

Total loans
$
1,061,263

 
$
59,191

 
$
1,976

 
$
1,122,430

 
December 31, 2017
 
Debt Service Coverage Ratio
 
 
 
≥ 1.2X
 
1.0X to < 1.2X
 
< 1.0X
 
Total Loans
 
(in thousands)
Loan-to-Value Ratio:
 
 
 
 
 
 
 
0%-59.99%
$
606,846

 
$
21,709

 
$
705

 
$
629,260

60%-69.99%
333,185

 
9,594

 
2,010

 
344,789

70%-79.99%
84,492

 
26,439

 
0

 
110,931

80% or greater
0

 
0

 
233

 
233

Total loans
$
1,024,523

 
$
57,742

 
$
2,948

 
$
1,085,213


The following tables set forth an aging of past due commercial mortgage and other loans, based upon the recorded investment gross of allowance for credit losses, as well as the amount of commercial mortgage and other loans on non-accrual status, as of the dates indicated:
 
June 30, 2018
 
Current
 
30-59 Days Past Due
 
60-89 Days Past Due
 
90 Days or More Past Due(1)
 
Total Loans
 
Non-Accrual Status(2)
 
(in thousands)
Commercial mortgage loans
$
1,055,919

 
$
0

 
$
0

 
$
0

 
$
1,055,919

 
$
0

Agricultural property loans
66,511

 
0

 
0

 
0

 
66,511

 
0

Total
$
1,122,430

 
$
0

 
$
0

 
$
0

 
$
1,122,430

 
$
0


(1)
As of June 30, 2018, there were no loans in this category accruing interest.
(2)
For additional information regarding the Company's policies for accruing interest on loans, see Note 2 to the Consolidated Financial Statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2017.
 
December 31, 2017
 
Current
 
30-59 Days Past Due
 
60-89 Days Past Due
 
90 Days or More Past Due(1)
 
Total Loans
 
Non-Accrual Status(2)
 
(in thousands)
Commercial mortgage loans
$
1,017,974

 
$
0

 
$
0

 
$
0

 
$
1,017,974

 
$
0

Agricultural property loans
67,239

 
0

 
0

 
0

 
67,239

 
0

Total
$
1,085,213

 
$
0

 
$
0

 
$
0

 
$
1,085,213

 
$
0



(1)
As of December 31, 2017, there were no loans in this category accruing interest.
(2)
For additional information regarding the Company's policies for accruing interest on loans, see Note 2 to the Consolidated Financial Statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2017.

For the three and six months ended June 30, 2018, there were no commercial mortgage and other loans acquired, other than those through direct origination, and there were no commercial mortgage and other loans sold. For both the three and six months ended June 30, 2017, there were no commercial mortgage and other loans acquired, other than those through direct origination, and there were $42 million of commercial mortgage and other loans sold.



Other Invested Assets

The following table sets forth the composition of “Other invested assets,” as of the dates indicated:
 
June 30, 2018
 
December 31, 2017
 
(in thousands)
Company's investment in separate accounts
$
40,967

 
$
37,404

LPs/LLCs:
 
 
 
Equity method:
 
 
 
Private equity
141,165

 
123,957

Hedge funds
56,830

 
53,066

Real estate-related
8,798

 
7,040

Subtotal equity method
206,793

 
184,063

Fair value:
 
 
 
Private equity
58,133

 
35,686

Hedge funds
774

 
726

Real estate-related
7,248

 
5,186

Subtotal fair value(1)
66,155

 
41,598

Total LPs/LLCs
272,948

 
225,661

Derivative instruments
5

 
9

Total other invested assets(2)
$
313,920

 
$
263,074



(1)
As of December 31, 2017, $40.9 million was accounted for under the cost method.
(2)
Prior period amounts have been reclassified to conform to current period presentation. For additional information, see Note 2.

Net Investment Income

The following table sets forth "Net investment income" by investment type, for the periods indicated:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2018
 
2017
 
2018
 
2017
 
(in thousands)
Fixed maturities, available-for-sale
$
55,195

 
$
59,181

 
$
108,455

 
$
118,248

Fixed maturities, trading
272

 
181

 
538

 
360

Equity securities, at fair value
221

 
221

 
442

 
442

Commercial mortgage and other loans
12,303

 
13,150

 
24,708

 
26,266

Policy loans
16,329

 
15,834

 
32,233

 
31,462

Short-term investments and cash equivalents
114

 
205

 
437

 
392

Other invested assets
1,743

 
7,270

 
1,858

 
13,649

Gross investment income
86,177

 
96,042

 
168,671

 
190,819

Less: investment expenses
(4,528
)
 
(5,001
)
 
(9,107
)
 
(10,163
)
Net investment income(1)
$
81,649

 
$
91,041

 
$
159,564

 
$
180,656


(1)
Prior period amounts have been reclassified to conform to current period presentation.

Realized Investment Gains (Losses), Net 

The following table sets forth "Realized investment gains (losses), net," by investment type, for the periods indicated:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2018
 
2017
 
2018
 
2017
 
(in thousands)
Fixed maturities(1)
$
(3,318
)
 
$
4,230

 
$
(4,127
)
 
$
200

Equity securities(2)
0

 
(11
)
 
0

 
(125
)
Commercial mortgage and other loans
(125
)
 
(349
)
 
6

 
(488
)
LPs/LLCs
2

 
(28
)
 
849

 
(101
)
Derivatives(3)
(33,448
)
 
272,748

 
(82,641
)
 
244,531

Short-term investments and cash equivalents
(1
)
 
0

 
(19
)
 
(6
)
Realized investment gains (losses), net
$
(36,890
)
 
$
276,590

 
$
(85,932
)
 
$
244,011


 
(1)
Includes fixed maturity securities classified as available-for-sale and excludes fixed maturity securities classified as trading.
(2)
Effective January 1, 2018, realized gains (losses) on equity securities are recorded within "Other income".
(3)
Includes the hedged items offset in qualifying fair value hedge accounting relationships.

Net Unrealized Gains (Losses) on Investments within AOCI

The following table sets forth net unrealized gains (losses) on investments, as of the dates indicated:
 
June 30, 2018
 
December 31, 2017
 
(in thousands)
Fixed maturity securities, available-for-sale—with OTTI
$
97

 
$
1,609

Fixed maturity securities, available-for-sale—all other
25,453

 
279,749

Equity securities, available-for-sale(1)
0

 
2,368

Derivatives designated as cash flow hedges(2)
(9,021
)
 
(17,678
)
Affiliated notes
1,204

 
4,782

Other investments
4,823

 
3,588

Net unrealized gains (losses) on investments
$
22,556

 
$
274,418


(1)
Effective January 1, 2018, unrealized gains (losses) on equity securities are recorded within "Other income."
(2)
For more information on cash flow hedges, see Note 4.

Repurchase Agreements and Securities Lending

In the normal course of business, the Company sells securities under agreements to repurchase and enters into securities lending transactions. As of June 30, 2018 and December 31, 2017, the Company had no repurchase agreements.

The following table sets forth the composition of "Cash collateral for loaned securities," which represents the liability to return cash collateral received for the following types of securities loaned, as of the dates indicated:
 
June 30, 2018
 
December 31, 2017
 
Remaining Contractual Maturities of the Agreements
 
 
 
Remaining Contractual Maturities of the Agreements
 
 
 
Overnight & Continuous
 
Up to 30 Days
 
Total
 
Overnight & Continuous
 
Up to 30 Days
 
Total
 
(in thousands)
U.S. Treasury securities and obligations of U.S. government authorities and agencies
$
8,200

 
$
0

 
$
8,200

 
$
0

 
$
22,460

 
$
22,460

Foreign government bonds
484

 
0

 
484

 
6,157

 
0

 
6,157

U.S. public corporate securities
4,454

 
0

 
4,454

 
4,074

 
0

 
4,074

Foreign public corporate securities
0

 
0

 
0

 
478

 
0

 
478

Total cash collateral for loaned securities(1)
$
13,138

 
$
0

 
$
13,138

 
$
10,709

 
$
22,460

 
$
33,169



(1)
The Company did not have any agreements with remaining contractual maturities of thirty days or greater, as of the dates indicated.