4. INVESTMENT OPERATIONS

Major categories of net investment income are summarized as follows:

	For The Year Ended December 31,

	2012		2011		2010
	(Dollars In Thousands)
Fixed maturities	$	1,453,702	$	1,416,861	$	1,302,226
Equity securities		21,187		21,274		18,516
Mortgage loans		349,877		336,542		311,253
Investment real estate		3,290		3,459		3,180
Short-term investments		64,729		69,791		72,803

		1,892,785		1,847,927		1,707,978
Other investment expenses		30,453		27,284		24,302

Net investment income	$	1,862,332	$	1,820,643	$	1,683,676

Net realized investment gains (losses) for all other investments are summarized as follows:

	For The Year Ended December 31,

	2012			2011			2010
	(Dollars In Thousands)
Fixed maturities	$	67,726		$	80,180		$	50,056
Equity securities		(45	)		9,194			6,488
Impairments on fixed maturity securities		(58,886	)		(47,442	)		(39,696	)
Impairments on equity securities		—			—			(1,814	)
Modco trading portfolio		177,986			164,224			109,399
Other investments		(14,632	)		(18,683	)		(11,577	)

Total realized gains (losses)—investments	$	172,149		$	187,473		$	112,856

For the year ended December 31, 2012, gross realized gains on investments available-for-sale (fixed maturities, equity securities, and short-term investments) were $73.3 million and gross realized losses were $64.0 million, including $58.4 million of impairment losses. For the year ended December 31, 2011, gross realized gains on investments available-for-sale (fixed maturities, equity securities, and short-term investments) were $104.8 million and gross realized losses were $62.1 million, including $46.7 million of impairment losses. For the year ended December 31, 2010, gross realized gains on investments available-for-sale (fixed maturities, equity securities, and short-term investments) were $98.2 million and gross realized losses were $82.9 million, including $41.3 million of impairment losses.

For the year ended December 31, 2012, the Company sold securities in an unrealized gain position with a fair value (proceeds) of $1.6 billion. The gain realized on the sale of these securities was $73.3 million. For the year ended December 31, 2011, the Company sold securities in an unrealized gain position with a fair value (proceeds) of $2.2 billion. The gain realized on the sale of these securities was $104.8 million. For the year ended December 31, 2010, the Company sold securities in an unrealized gain position with a fair value (proceeds) of $2.9 billion. The gain realized on the sale of these securities was $98.2 million.

For the year ended December 31, 2012, the Company sold securities in an unrealized loss position with a fair value (proceeds) of $38.0 million. The loss realized on the sale of these securities was $5.6 million. The Company made the decision to exit these holdings in order to reduce its European financial exposure.

For the year ended December 31, 2011, the Company sold securities in an unrealized loss position with a fair value (proceeds) of $264.0 million. The loss realized on the sale of these securities was $15.4 million. The Company made the decision to exit these holdings in order to reduce its European financial exposure.

For the year ended December 31, 2010, the Company sold securities in an unrealized loss position with a fair value (proceeds) of $705.5 million. The loss realized on the sale of these securities was $41.6 million. The Company made the decision to exit these holdings to reduce exposure to the 2010 oil spill in the Gulf of Mexico, to issues with credit deterioration, and European financial institutions.

Certain European countries have experienced varying degrees of financial stress. Risks from the continued debt crisis in Europe could continue to disrupt the financial markets which could have a detrimental impact on global economic conditions and on sovereign and non-sovereign obligations. There remains considerable uncertainty as to future developments in the European debt crisis and the impact on financial markets.

The amortized cost and fair value of the Company's investments classified as available-for-sale as of December 31, are as follows:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Total OTTI Recognized in OCI⁽¹⁾

	(Dollars In Thousands)
2012
Fixed maturities:
Bonds
Residential mortgage-backed securities	$	1,766,440	$	92,265	$	(19,375	)	$	1,839,330	$	(406	)
Commercial mortgage-backed securities		797,844		72,577		(598	)		869,823		—
Other asset-backed securities		1,023,649		12,788		(61,424	)		975,013		(241	)
U.S. government-related securities		1,099,001		71,537		(595	)		1,169,943		—
Other government-related securities		93,565		7,258		(45	)		100,778		—
States, municipals, and political subdivisions		1,188,077		255,900		(264	)		1,443,713		—
Corporate bonds		17,705,440		2,725,057		(48,446	)		20,382,051		(5,487	)

		23,674,016		3,237,382		(130,747	)		26,780,651		(6,134	)
Equity securities		389,821		12,443		(10,033	)		392,231		—
Short-term investments		98,877		—		—			98,877		—

	$	24,162,714	$	3,249,825	$	(140,780	)	$	27,271,759	$	(6,134	)

2011
Fixed maturities:
Bonds
Residential mortgage-backed securities	$	2,345,578	$	82,594	$	(86,042	)	$	2,342,130	$	(47,806	)
Commercial mortgage-backed securities		531,322		24,466		(4,229	)		551,559		—
Other asset-backed securities		997,398		6,529		(90,898	)		913,029		(6,559	)
U.S. government-related securities		1,150,525		65,212		(58	)		1,215,679		—
Other government-related securities		88,058		4,959		—			93,017		—
States, municipals, and political subdivisions		1,154,374		173,408		—			1,327,782		—
Corporate bonds		16,910,738		1,920,142		(250,595	)		18,580,285		1,787

		23,177,993		2,277,310		(431,822	)		25,023,481		(52,578	)
Equity securities		328,833		5,993		(16,635	)		318,191		(74	)
Short-term investments		15,649		—		—			15,649		—

	$	23,522,475	$	2,283,303	$	(448,457	)	$	25,357,321	$	(52,652	)

⁽¹⁾: These amounts are included in the gross unrealized gains and gross unrealized losses columns above.

The amortized cost and fair value of the Company's investments classified as held-to-maturity as of December 31, are as follows:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Total OTTI Recognized in OCI

			(Dollars In Thousands)
2012
Fixed maturities:
Other	$	300,000	$	19,163	$	—	$	319,163	$	—

		300,000		19,163		—		319,163		—
Equity securities		—		—		—		—		—
Short-term investments		—		—		—		—		—

	$	300,000	$	19,163	$	—	$	319,163	$	—

As of December 31, 2012 and 2011, the Company had an additional $3.0 billion and $3.0 billion of fixed maturities, $19.6 million and $17.0 million of equity securities, and $118.9 million and $85.8 million of short-term investments classified as trading securities, respectively.

The amortized cost and fair value of available-for-sale and held-to-maturity fixed maturities as of December 31, 2012, by expected maturity, are shown below. Expected maturities of securities without a single maturity date are allocated based on estimated rates of prepayment that may differ from actual rates of prepayment.

	Available-for-sale				Held-to-maturity

	Amortized Cost		Fair Value		Amortized Cost		Fair Value
	(Dollars In Thousands)				(Dollars In Thousands)
Due in one year or less	$	452,891	$	459,845	$	—	$	—
Due after one year through five years		4,576,491		5,004,080		—		—
Due after five years through ten years		6,290,995		6,976,137		—		—
Due after ten years		12,353,639		14,340,589		300,000		319,163

	$	23,674,016	$	26,780,651	$	300,000	$	319,163

During the year ended December 31, 2012, the Company recorded pre-tax other-than-temporary impairments of investments of $66.2 million, all of which were related to debt securities. Of the $66.2 million of impairments for the year ended December 31, 2012, $58.9 million was recorded in earnings and $7.3 million was recorded in other comprehensive income (loss). There were no impairments related to equity securities. For the year ended December 31, 2012, there were no other-than-temporary impairments related to debt securities or equity securities that the Company intended to sell or expected to be required to sell.

During the year ended December 31, 2011, the Company recorded pre-tax other-than-temporary impairments of investments of $62.3 million, all of which were related to debt securities. Of the $62.3 million of impairments for the year ended December 31, 2011, $47.4 million was recorded in earnings and $14.9 million was recorded in other comprehensive income (loss). There were no impairments related to equity securities. For the year ended December 31, 2011, pre-tax other-than-temporary impairments related to debt securities that the Company does not intend to sell and does not expect to be required to sell were $52.8 million, with $37.9 million of credit losses recorded on debt securities in earnings and $14.9 million of non-credit losses recorded in other comprehensive income (loss). During the same period, other-than-temporary impairments related to debt securities that the Company intends to sell or expects to be required to sell were $9.5 million and were recorded in earnings.

During the year ended December 31, 2010, the Company recorded other-than-temporary impairments of investments of $75.3 million. Of the $75.3 million of impairments for the year ended December 31, 2010, $41.5 million was recorded in earnings and $33.8 million was recorded in other comprehensive income (loss). For the year ended December 31, 2010, there was $2.5 million of other-than-temporary impairments related to equity securities. For the year ended December 31, 2010, there was $72.8 million of other-than-temporary impairments related to debt securities. During this period, there was no other-than-temporary impairments related to debt securities or equity securities that the Company intends to sell or expects to be required to sell.

The following chart is a rollforward of available-for-sale credit losses on debt securities held by the Company for which a portion of an other-than-temporary impairment was recognized in other comprehensive income (loss):

	For The Year Ended December 31,

	2012		2011			2010
	(Dollars In Thousands)
Beginning balance	$	69,719	$	39,427		$	25,076
Additions for newly impaired securities		26,961		12,731			27,029
Additions for previously impaired securities		25,441		20,650			4,970
Reductions for previously impaired securities due to a change in expected cash flows		—		—			—
Reductions for previously impaired securities that were sold in the current period		—		(3,089	)		(17,648	)
Other		—		—			—

Ending balance	$	122,121	$	69,719		$	39,427

The following table includes the gross unrealized losses and fair value of the Company's investments that are not deemed to be other-than-temporarily impaired, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position as of December 31, 2012:

	Less Than 12 Months					12 Months or More					Total

	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
	(Dollars In Thousands)
Residential mortgage-backed securities	$	101,522	$	(9,605	)	$	166,000	$	(9,770	)	$	267,522	$	(19,375	)
Commercial mortgage-backed securities		50,601		(598	)		—		—			50,601		(598	)
Other asset-backed securities		479,223		(28,179	)		242,558		(33,245	)		721,781		(61,424	)
U.S. government-related securities		107,802		(595	)		—		—			107,802		(595	)
Other government-related securities		14,955		(45	)		—		—			14,955		(45	)
States, municipalities, and political subdivisions		11,526		(264	)		—		—			11,526		(264	)
Corporate bonds		777,552		(23,663	)		364,110		(24,783	)		1,141,662		(48,446	)
Equities		35,059		(5,150	)		21,954		(4,883	)		57,013		(10,033	)

	$	1,578,240	$	(68,099	)	$	794,622	$	(72,681	)	$	2,372,862	$	(140,780	)

RMBS have a gross unrealized loss greater than twelve months of $9.8 million as of December 31, 2012. These losses relate to a widening in spreads and defaults as a result of continued weakness in the residential housing market which have reduced the fair value of the RMBS holdings. Factors such as the credit enhancement within the deal structure, the average life of the securities, and the performance of the underlying collateral support the recoverability of these investments.

The other asset-backed securities have a gross unrealized loss greater than twelve months of $33.2 million as of December 31, 2012. This category predominately includes student-loan backed auction rate securities, the underlying collateral, of which is at least 97% guaranteed by the Federal Family Education Loan Program ("FFELP"). These unrealized losses have occurred within the Company's auction rate securities ("ARS") portfolio since the market collapse during 2008. At this time, the Company has no reason to believe that the U.S. Department of Education would not honor the FFELP guarantee, if it were necessary.

The corporate bonds category has gross unrealized losses greater than twelve months of $24.8 million as of December 31, 2012. These losses relate primarily to fluctuations in credit spreads. The aggregate decline in market value of these securities was deemed temporary due to positive factors supporting the recoverability of the respective investments. Positive factors considered include credit ratings, the financial health of the issuer, the continued access of the issuer to capital markets, and other pertinent information.

The equities category has a gross unrealized loss greater than twelve months of $4.9 million as of December 31, 2012. These losses primarily relate to a widening in credit spreads on perpetual preferred stock holdings. The aggregate decline in market value of these securities was deemed temporary due to factors supporting the recoverability of the respective investments. Positive factors include credit ratings, the financial health of the issuer, the continued access of the issuer to the capital markets, and other pertinent information.

The Company does not consider these unrealized loss positions to be other-than-temporary, based on the factors discussed and because the Company has the ability and intent to hold these investments until the fair values recover, and does not intend to sell or expect to be required to sell the securities before recovering the Company's amortized cost of debt securities.

	Less Than 12 Months					12 Months or More					Total

	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
	(Dollars In Thousands)
Residential mortgage-backed securities	$	277,858	$	(15,447	)	$	527,120	$	(70,595	)	$	804,978	$	(86,042	)
Commercial mortgage-backed securities		78,892		(4,229	)		—		—			78,892		(4,229	)
Other asset-backed securities		531,653		(32,074	)		190,639		(58,824	)		722,292		(90,898	)
U.S. government-related securities		21,311		(58	)		—		—			21,311		(58	)
Corporate bonds		1,880,931		(132,297	)		526,333		(118,298	)		2,407,264		(250,595	)
Equities		50,638		(8,436	)		22,295		(8,199	)		72,933		(16,635	)

	$	2,841,283	$	(192,541	)	$	1,266,387	$	(255,916	)	$	4,107,670	$	(448,457	)

RMBS have a gross unrealized loss greater than twelve months of $70.6 million as of December 31, 2011. The non-agency RMBS market experienced improvements during the year, but these losses represent securities where credit concerns are more pronounced. Factors such as the credit enhancement within the deal structure, the average life of the securities, and the performance of the underlying collateral support the recoverability of these investments.

The other asset-backed securities have a gross unrealized loss greater than twelve months of $58.8 million as of December 31, 2011. This category predominately includes student-loan backed auction rate securities, the underlying collateral, of which is at least 97% guaranteed by the Federal Family Education Loan Program ("FFELP"). These unrealized losses have occurred within the Company's auction rate securities ("ARS") portfolio since the market collapse during 2008. At this time, the Company has no reason to believe that the U.S. Department of Education would not honor the FFELP guarantee, if it were necessary.

The corporate bonds category has gross unrealized losses greater than twelve months of $118.3 million as of December 31, 2011. These losses relate primarily to fluctuations in credit spreads. The aggregate decline in market value of these securities was deemed temporary due to positive factors supporting the recoverability of the respective investments. Positive factors considered include credit ratings, the financial health of the issuer, the continued access of the issuer to capital markets, and other pertinent information.

The equities category has a gross unrealized loss greater than twelve months of $8.2 million as of December 31, 2011. These losses primarily relate to a widening in credit spreads on perpetual preferred stock holdings. The aggregate decline in market value of these securities was deemed temporary due to factors supporting the recoverability of the respective investments. Positive factors include credit ratings, the financial health of the issuer, the continued access of the issuer to the capital markets, and other pertinent information.

As of December 31, 2012, the Company had securities in its available-for-sale portfolio which were rated below investment grade of $1.7 billion and had an amortized cost of $1.7 billion. In addition, included in the Company's trading portfolio, the Company held $367.1 million of securities which were rated below investment grade. Approximately $416.5 million of the below investment grade securities were not publicly traded.

The change in unrealized gains (losses), net of income tax, on fixed maturity and equity securities, classified as available-for-sale is summarized as follows:

	For The Year Ended December 31,

	2012		2011			2010
	(Dollars In Thousands)
Fixed maturities	$	819,746	$	761,437		$	696,758
Equity securities		8,484		(13,292	)		9,701

The Company held $12.2 million of non-income producing investments, consisting of fixed maturities, equities, and investment real estate for the year ended December 31, 2012.

Included in the Company's invested assets are $865.4 million of policy loans as of December 31, 2012. The interest rates on standard policy loans range from 3.0% to 8.0%. The collateral loans on life insurance policies have an interest rate of 13.64%.

Securities Lending

In prior periods, the Company participated in securities lending, primarily as an enhancement to its investment yield. During the second quarter of 2011, the Company discontinued this program. Certain collateral assets, which the Company previously intended to dispose of and on which it recorded an other-than-temporary impairment of $1.3 million, were instead retained by the Company and are included in its fixed maturities as of December 31, 2012 with a balance of $3.7 million. The Company currently does not have any intent to sell these securities, nor does the Company anticipate being required to sell them.

Variable Interest Entities

The Company holds certain investments in entities in which its ownership interests could possibly considered variable interests under Topic 810 of the FASB ASC (excluding debt and equity securities held as trading, available for sale, or held to maturity). The Company reviews the characteristics of each of these applicable entities and compares those characteristics to applicable criteria to determine whether the entity is a Variable Interest Entity ("VIE"). If the entity is determined to be a VIE, the Company then performs a detailed review to determine whether the interest would be considered a variable interest under the guidance. The Company then performs a qualitative review of all variable interests with the entity and determines whether the Company is the primary beneficiary. ASC 810 provides that an entity is the primary beneficiary of a VIE if the entity has 1) the power to direct the activities of the VIE that most significantly impact the VIE's economic performance, and 2) the obligation to absorb losses of the VIE that could potentially be significant to the VIE or the right to receive benefits from the entity that could potentially be significant to the VIE.

Based on this analysis, the Company had an interest in one wholly owned subsidiary, Red Mountain, LLC ("Red Mountain"), that was determined to be a VIE as of December 31, 2012. The activity most significant to Red Mountain is the issuance of a note in connection with a financing transaction involving Golden Gate V Vermont Captive Insurance Company ("Golden Gate V") and the Company in which Golden Gate V issued non-recourse funding obligations to Red Mountain and Red Mountain issued the note to Golden Gate V. Credit enhancement on the Red Mountain Note is provided by an unrelated third party. For details of this transaction, see Note 10, Debt and Other Obligations. The Company had the power, via its 100% ownership through an affiliate, to direct the activities of the VIE, but did not have the obligation to absorb losses related to the primary risks or sources of variability to the VIE. The variability of loss would be borne primarily by the third party in its function as provider of credit enhancement on the Red Mountain Note. Accordingly, it was determined that the Company is not the primary beneficiary of the VIE. The Company's risk of loss related to the VIE is limited to its investment of $10,000. Additionally, the holding company ("PLC") has guaranteed the VIE's credit enhancement fee obligation to the unrelated third party provider.