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INVESTMENT SECURITIES | 12 Months Ended
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Dec. 31, 2013
INVESTMENT SECURITIES |
INVESTMENT SECURITIES | 4. INVESTMENT SECURITIES A summary of our investment securities portfolio as of December 31, 2013 and 2012 is as follows:
|  |  |  | Gross |  | Gross |  | Estimated |
|  | Amortized |  | unrealized |  | unrealized |  | fair |
|  | cost |  | gains |  | losses |  | value |
|  | (Dollars in thousands) |
2013 |  |  |  |  |  |  |  |  |
Held to Maturity: |  |  |  |  |  |  |  |  |
Mortgage-backed securities - U.S. Government sponsored entities |  | $ | 252,047 |  | $ | — |  | $ | (13,342 | ) | $ | 238,705 |
Available for Sale: |  |  |  |  |  |  |  |  |
Debt securities: |  |  |  |  |  |  |  |  |
States and political subdivisions |  | $ | 191,158 |  | $ | 305 |  | $ | (12,106 | ) | $ | 179,357 |
Corporate securities |  | 157,337 |  | 1,878 |  | (1,120 | ) | 158,095 |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |
U.S. Government sponsored entities |  | 936,144 |  | 7,085 |  | (15,603 | ) | 927,626 |
Non-agency collateralized mortgage obligations |  | 147,902 |  | 81 |  | (5,937 | ) | 142,046 |
Other |  | 755 |  | 120 |  | — |  | 875 |
Total |  | $ | 1,433,296 |  | $ | 9,469 |  | $ | (34,766 | ) | $ | 1,407,999 |
2012 |  |  |  |  |  |  |  |  |
Held to Maturity: |  |  |  |  |  |  |  |  |
Mortgage-backed securities - U.S. Government sponsored entities |  | $ | 161,848 |  | $ | 695 |  | $ | (15 | ) | $ | 162,528 |
Available for Sale: |  |  |  |  |  |  |  |  |
Debt securities: |  |  |  |  |  |  |  |  |
U.S. Government sponsored entities |  | $ | 278,198 |  | $ | 2,741 |  | $ | — |  | $ | 280,939 |
States and political subdivisions |  | 184,274 |  | 2,831 |  | (1,194 | ) | 185,911 |
Corporate securities |  | 125,649 |  | 2,360 |  | (63 | ) | 127,946 |
Mortgage-backed securities - U.S. Government sponsored entities |  | 925,018 |  | 17,548 |  | (1,523 | ) | 941,043 |
Other |  | 866 |  | 40 |  | — |  | 906 |
Total |  | $ | 1,514,005 |  | $ | 25,520 |  | $ | (2,780 | ) | $ | 1,536,745 |
The amortized cost and estimated fair value of our investment securities at December 31, 2013 by contractual maturity are shown below. Actual maturities will differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties.
|  | December 31, 2013 |
|  | Amortized Cost |  | Estimated Fair Value |
|  | (Dollars in thousands) |
Held to Maturity |  |  |  |  |
Mortgage-backed securities |  | $ | 252,047 |  | $ | 238,705 |
Available for Sale |  |  |  |  |
Due in one year or less |  | $ | — |  | $ | — |
Due after one year through five years |  | 87,349 |  | 88,819 |
Due after five years through ten years |  | 134,337 |  | 131,223 |
Due after ten years |  | 126,809 |  | 117,410 |
Mortgage-backed securities |  | 1,084,046 |  | 1,069,672 |
Other |  | 755 |  | 875 |
Total |  | $ | 1,433,296 |  | $ | 1,407,999 |
Proceeds from sales of investment securities available for sale were $271.9 million, $130.1 million, and $138.0 million in 2013, 2012 and 2011, respectively, resulting in gross realized gains of $3.9 million, $1.7 million, and $1.4 million in 2013, 2012 and 2011, respectively, and gross realized losses of $3.4 million, $0.9 million, and $0.1 million in 2013, 2012 and 2011, respectively. The specific identification method was used as the basis for determining the cost of all securities sold. In the fourth quarter of 2013, we executed a bond swap where we sold $271.5 million in lower-yielding available-for-sale agency debentures and agency mortgage-backed securities and agency debentures with an average net yield of 1.87% and a weighted average life of 2.9 years and reallocated the proceeds in $242.5 million of higher-yielding agency mortgage-backed securities, non-agency commercial mortgage-backed securities and corporate bond securities with an average yield of 3.21% and a weighted average life of 7.4 years. The new securities were classified in the available-for-sale portfolio and a net gain of $0.5 million was realized on the transaction. In the third quarter of 2012, we completed an investment securities portfolio repositioning to reduce net interest income volatility and enhance the potential for prospective earnings and an improved net interest margin. In connection with the repositioning, we sold $124.7 million in available for sale mortgage-backed securities with an average net yield of 0.60% and a weighted average life of 1.3 years and reinvested the proceeds in $133.2 million of investment securities with an average yield of 1.88% and a weighted average life of 5.3 years. The new securities were classified in the held to maturity portfolio and a net gain of $0.7 million was realized on the transaction. Investment securities of $914.1 million and $905.5 million at December 31, 2013 and 2012, respectively, were pledged to secure public funds on deposit, securities sold under agreements to repurchase and other long-term and short-term borrowings. There were a total of 321 and 118 securities in an unrealized loss position at December 31, 2013 and 2012, respectively. Provided below is a summary of investment securities which were in an unrealized loss position at December 31, 2013 and 2012:
|  | Less than 12 months |  | 12 months or longer |  | Total |
|  |  |  | Unrealized |  |  |  | Unrealized |  |  |  | Unrealized |
Description of Securities |  | Fair Value |  | Losses |  | Fair Value |  | Losses |  | Fair Value |  | Losses |
|  | (Dollars in thousands) |
At December 31, 2013: |  |  |  |  |  |  |  |  |  |  |  |  |
Debt securities: |  |  |  |  |  |  |  |  |  |  |  |  |
States and political subdivisions |  | $ | 137,176 |  | $ | (8,985 | ) | $ | 32,747 |  | $ | (3,121 | ) | $ | 169,923 |  | $ | (12,106 | )
Corporate securities |  | 75,368 |  | (1,120 | ) | — |  | — |  | 75,368 |  | (1,120 | )
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government sponsored entities |  | 909,585 |  | (28,386 | ) | 4,848 |  | (559 | ) | 914,433 |  | (28,945 | )
Non-agency collateralized mortgage obligations |  | 129,991 |  | (5,937 | ) | — |  | — |  | 129,991 |  | (5,937 | )
Total temporarily impaired securities |  | $ | 1,252,120 |  | $ | (44,428 | ) | $ | 37,595 |  | $ | (3,680 | ) | $ | 1,289,715 |  | $ | (48,108 | )
At December 31, 2012: |  |  |  |  |  |  |  |  |  |  |  |  |
Debt securities: |  |  |  |  |  |  |  |  |  |  |  |  |
States and political subdivisions |  | $ | 73,128 |  | $ | (1,194 | ) | $ | — |  | $ | — |  | $ | 73,128 |  | $ | (1,194 | )
Corporate securities |  | 23,205 |  | (63 | ) | — |  | — |  | 23,205 |  | (63 | )
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government sponsored entities |  | 206,981 |  | (1,538 | ) | — |  | — |  | 206,981 |  | (1,538 | )
Total temporarily impaired securities |  | $ | 303,314 |  | $ | (2,795 | ) | $ | — |  | $ | — |  | $ | 303,314 |  | $ | (2,795 | )
The unrealized losses on the Company’s investment securities were caused by market conditions. Investment securities are evaluated on a quarterly basis, and include evaluating the changes in the investment securities’ ratings issued by rating agencies and changes in the financial condition of the issuer, and for mortgage related securities, delinquency and loss information with respect to the underlying collateral, changes in levels of subordination for the Company’s particular position within the repayment structure, and remaining credit enhancement as compared to expected credit losses of the security. Substantially all of these investment securities continue to be investment grade rated by one or more major rating agencies. Other-than-temporary impairment (“OTTI”) Unrealized losses for all investment securities are reviewed to determine whether the losses are “other-than-temporary.” Investment securities are evaluated for OTTI on at least a quarterly basis and more frequently when economic or market conditions warrant such an evaluation to determine whether a decline in their value below amortized cost is other-than-temporary. In conducting this assessment, we evaluate a number of factors including, but not limited to: · The length of time and the extent to which fair value has been less than the amortized cost basis; · Adverse conditions specifically related to the security, an industry, or a geographic area; · The historical and implied volatility of the fair value of the security; · The payment structure of the debt security and the likelihood of the issuer being able to make payments; · Failure of the issuer to make scheduled interest or principal payments; · Any rating changes by a rating agency; and · Recoveries or additional decline in fair value subsequent to the balance sheet date. The term “other-than-temporary” is not intended to indicate that the decline is permanent, but indicates that the prospects for a near-term recovery of value are not necessarily favorable, or that there is a general lack of evidence to support a realizable value equal to or greater than the carrying value of the investment. Once a decline in value is determined to be other-than-temporary, the value of the security is reduced and a corresponding charge to earnings is recognized for anticipated credit losses. The declines in market value were primarily attributable to changes in interest rates and disruptions in the credit and financial markets. Because we have no intent to sell securities in an unrealized loss position and it is not more likely than not that we will be required to sell such securities before recovery of its amortized cost basis, we do not consider our investments to be other-than-temporarily impaired.

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