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Investment Securities | 9 Months Ended
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Sep. 30, 2016
Investment Securities |
Investment Securities | Note 6 — Investment Securities The Company classifies debt and equity securities into one of three categories: held-to maturity, available-for-sale, or trading. Such securities are reassessed for appropriate classification at each reporting date. Securities classified as “held-to-maturity” are carried at amortized cost for financial statement reporting, while securities classified as “available-for-sale” and “trading” are carried at their fair value. Unrealized holding gains and losses are included in net income for those securities classified as “trading,” while unrealized holding gains and losses related to those securities classified as “available-for-sale” are excluded from net income and reported net of tax as other comprehensive income (loss) and accumulated other comprehensive income (loss) until realized, or in the case of losses, when deemed other than temporary. The amortized cost and estimated fair value by type of investment security at September 30, 2016 are as follows:
|  | Held to Maturity |
|  |  |  |  | Gross |  | Gross |  |  |  |  |  |  |
|  | Amortized |  | unrealized |  | unrealized |  | Estimated |  | Carrying |
|  | cost |  | gains |  | losses |  | fair value |  | value |
|  | (Dollars in Thousands) |
Other securities |  | $ | 2,400 |  | $ | — |  | $ | — |  | $ | 2,400 |  | $ | 2,400 |
Total investment securities |  | $ | 2,400 |  | $ | — |  | $ | — |  | $ | 2,400 |  | $ | 2,400 |
|  | Available for Sale |
|  |  |  |  | Gross |  | Gross |  |  |  |  |  |  |
|  | Amortized |  | unrealized |  | unrealized |  | Estimated |  | Carrying |
|  | cost |  | gains |  | losses |  | fair value |  | value(1) |
|  | (Dollars in Thousands) |
Residential mortgage-backed securities |  | $ | 4,104,579 |  | $ | 42,699 |  | $ | (10,805) |  | $ | 4,136,473 |  | $ | 4,136,473 |
Obligations of states and political subdivisions |  |  | 245,426 |  |  | 16,826 |  |  | (1) |  |  | 262,251 |  |  | 262,251 |
Equity securities |  |  | 28,075 |  |  | 893 |  |  | (122) |  |  | 28,846 |  |  | 28,846 |
Total investment securities |  | $ | 4,378,080 |  | $ | 60,418 |  | $ | (10,928) |  | $ | 4,427,570 |  | $ | 4,427,570 |
| (1) |  | Included in the carrying value of residential mortgage-backed securities are $956,003 of mortgage-backed securities issued by Ginnie Mae, $3,161,960 of mortgage-backed securities issued by Fannie Mae and Freddie Mac and $18,511 issued by non-government entities.
The amortized cost and estimated fair value by type of investment security at December 31, 2015 are as follows:
|  | Held to Maturity |
|  |  |  |  | Gross |  | Gross |  |  |  |  |  |  |
|  | Amortized |  | unrealized |  | unrealized |  | Estimated |  | Carrying |
|  | cost |  | gains |  | losses |  | fair value |  | value |
|  | (Dollars in Thousands) |
Other securities |  | $ | 2,400 |  | $ | — |  | $ | — |  | $ | 2,400 |  | $ | 2,400 |
Total investment securities |  | $ | 2,400 |  | $ | — |  | $ | — |  | $ | 2,400 |  | $ | 2,400 |
|  | Available for Sale |
|  |  |  |  | Gross |  | Gross |  | Estimated |  |  |  |
|  | Amortized |  | unrealized |  | unrealized |  | fair |  | Carrying |
|  | cost |  | gains |  | losses |  | value |  | value(1) |
|  | (Dollars in Thousands) |
Residential mortgage-backed securities |  | $ | 3,908,809 |  | $ | 30,959 |  | $ | (46,557) |  | $ | 3,893,211 |  | $ | 3,893,211 |
Obligations of states and political subdivisions |  |  | 259,150 |  |  | 18,579 |  |  | (25) |  |  | 277,704 |  |  | 277,704 |
Equity securities |  |  | 28,075 |  |  | 627 |  |  | (245) |  |  | 28,457 |  |  | 28,457 |
Total investment securities |  | $ | 4,196,034 |  | $ | 50,165 |  | $ | (46,827) |  | $ | 4,199,372 |  | $ | 4,199,372 |
| (1) |  | Included in the carrying value of residential mortgage-backed securities are $1,147,143 of mortgage-backed securities issued by Ginnie Mae, $2,724,839 of mortgage-backed securities issued by Fannie Mae and Freddie Mac and $21,229 issued by non-government entities.
The amortized cost and estimated fair value of investment securities at September 30, 2016, by contractual maturity, are shown below. Expected maturities will differ from contractual maturities because borrowers may have the right to prepay obligations with or without prepayment penalties.
|  | Held to Maturity |  | Available for Sale |
|  | Amortized |  | Estimated |  | Amortized |  | Estimated |
|  | Cost |  | fair value |  | Cost |  | fair value |
|  | (Dollars in Thousands) |
Due in one year or less |  | $ | 1,325 |  | $ | 1,325 |  | $ | — |  | $ | — |
Due after one year through five years |  |  | 1,075 |  |  | 1,075 |  |  | — |  |  | — |
Due after five years through ten years |  |  | — |  |  | — |  |  | 1,218 |  |  | 1,307 |
Due after ten years |  |  | — |  |  | — |  |  | 244,208 |  |  | 260,944 |
Residential mortgage-backed securities |  |  | — |  |  | — |  |  | 4,104,579 |  |  | 4,136,474 |
Equity securities |  |  | — |  |  | — |  |  | 28,075 |  |  | 28,845 |
Total investment securities |  | $ | 2,400 |  | $ | 2,400 |  | $ | 4,378,080 |  | $ | 4,427,570 |
Residential mortgage-backed securities are securities primarily issued by the Federal Home Loan Mortgage Corporation (“Freddie Mac”), Federal National Mortgage Association (“Fannie Mae”), and the Government National Mortgage Association (“Ginnie Mae”) or non-government entities. Investments in residential mortgage-backed securities issued by Ginnie Mae are fully guaranteed by the U.S. Government. Investments in residential mortgage-backed securities issued by Freddie Mac and Fannie Mae are not fully guaranteed by the U.S. Government, however, the Company believes that the quality of the bonds is similar to other AAA rated bonds with limited credit risk, particularly given the placement of Fannie Mae and Freddie Mac into conservatorship by the federal government in early September 2008 and because securities issued by others that are collateralized by residential mortgage-backed securities issued by Fannie Mae or Freddie Mac are rated consistently as AAA rated securities. The amortized cost and fair value of available-for-sale investment securities pledged to qualify for fiduciary powers, to secure public monies as required by law, repurchase agreements and short-term fixed borrowings was $1,808,512,000 and $1,827,783,000, respectively, at September 30, 2016. Proceeds from the sale and calls of securities available-for-sale were $130,499,000 and $326,037,000 for the three and nine months ended September 30, 2016, which included $117,713,000 and $311,931,000 of mortgage-backed securities, respectively. Gross gains of $2,000 and $586,000 and gross losses of $1,347,000 and $2,291,000 were realized on the sales for the three and nine months ended September 30, 2016, respectively. Proceeds from the sale of securities available-for-sale were $0 and $30,282,000 for the three and nine months ended September 30, 2015, which included $0 and $23,992,000 of mortgage-backed securities, respectively. Gross gains of $0 and $0 and gross losses of $0 and $428,000 were realized on the sales for the three and nine months ended September 30, 2015, respectively. Gross unrealized losses on investment securities and the fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at September 30, 2016, were as follows:
|  | Less than 12 months |  | 12 months or more |  | Total |
|  |  |  |  | Unrealized |  |  |  |  | Unrealized |  |  |  |  | Unrealized |
|  | Fair Value |  | Losses |  | Fair Value |  | Losses |  | Fair Value |  | Losses |
|  | (Dollars in Thousands) |
Available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Residential mortgage-backed securities |  | $ | 812,590 |  | $ | (4,009) |  | $ | 412,993 |  | $ | (6,796) |  | $ | 1,225,583 |  | $ | (10,805) |
Obligations of states and political subdivisions |  |  | 541 |  |  | (1) |  |  | — |  |  | — |  |  | 541 |  |  | (1) |
Equity securities |  |  | — |  |  | — |  |  | 5,627 |  |  | (123) |  |  | 5,627 |  |  | (123) |
|  | $ | 813,131 |  | $ | (4,010) |  | $ | 418,620 |  | $ | (6,919) |  | $ | 1,231,751 |  | $ | (10,929) |
Gross unrealized losses on investment securities and the fair value of the related securities, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at December 31, 2015 were as follows:
|  | Less than 12 months |  | 12 months or more |  | Total |
|  |  |  |  | Unrealized |  |  |  |  | Unrealized |  |  |  |  | Unrealized |
|  | Fair Value |  | Losses |  | Fair Value |  | Losses |  | Fair Value |  | Losses |
|  | (Dollars in Thousands) |
Available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Residential mortgage-backed securities |  | $ | 1,083,137 |  | $ | (9,333) |  | $ | 1,454,550 |  | $ | (37,224) |  | $ | 2,537,687 |  | $ | (46,557) |
Obligations of states and political subdivisions |  |  | 6,814 |  |  | (19) |  |  | 544 |  |  | (6) |  |  | 7,358 |  |  | (25) |
Equity securities |  |  | 5,041 |  |  | (35) |  |  | 5,540 |  |  | (210) |  |  | 10,581 |  |  | (245) |
|  | $ | 1,094,992 |  | $ | (9,387) |  | $ | 1,460,634 |  | $ | (37,440) |  | $ | 2,555,626 |  | $ | (46,827) |
The unrealized losses on investments in residential mortgage-backed securities are primarily caused by changes in market interest rates. Residential mortgage-backed securities are primarily securities issued by Freddie Mac, Fannie Mae and Ginnie Mae. The contractual cash obligations of the securities issued by Ginnie Mae are fully guaranteed by the U.S. Government. The contractual cash obligations of the securities issued by Freddie Mac and Fannie Mae are not fully guaranteed by the U.S. Government; however, the Company believes that the quality of the bonds is similar to other AAA rated bonds with limited credit risk, particularly given the placement of Fannie Mae and Freddie Mac into conservatorship by the federal government in early September 2008, and because securities issued by others that are collateralized by residential mortgage-backed securities issued by Fannie Mae and Freddie Mac are rated consistently as AAA rated securities. The decrease in fair value on residential mortgage-backed securities issued by Freddie Mac, Fannie Mae and Ginnie Mae is due to market interest rates. The Company has no intent to sell and will more than likely not be required to sell before a market price recovery or maturity of the securities; therefore, it is the conclusion of the Company that the investments in residential mortgage-backed securities issued by Freddie Mac, Fannie Mae and Ginnie Mae are not considered other-than-temporarily impaired. In addition, the Company has a small investment in non-agency residential mortgage-backed securities that have additional market volatility beyond economically induced interest rate events. The Company has concluded that the investments in non-agency residential mortgage-backed securities are other-than-temporarily impaired due to both credit and other than credit issues. Impairment charges of $90,000 ($58,500, after tax) and $281,000 ($182,650 after tax) were recorded for the three and nine months ended September 30, 2016, respectively. Impairment charges of $249,000 ($161,850, after tax) and $700,000 ($455,000, after tax) were recorded for the three and nine months ended September 30, 2015, respectively. The impairment charge represents the credit related impairment on the securities. The unrealized losses on investments in other securities are caused by fluctuations in market interest rates. The underlying cash obligations of the securities are guaranteed by the entity underwriting the debt instrument. The Company believes that the entity issuing the debt will honor its interest payment schedule, as well as the full debt at maturity. The decrease in fair value is primarily due to market interest rates and not other factors, and because the Company has no intent to sell and will more than likely not be required to sell before a market price recovery or maturity of the securities, it is the conclusion of the Company that the investments are not considered other-than-temporarily impaired. The following table presents a reconciliation of credit-related impairment charges on available-for-sale investments recognized in earnings for the three and nine months ended September 30, 2016 (Dollars in Thousands):
Balance at June 30, 2016 |  | $ | 13,768
Impairment charges recognized during period |  |  | 90
Balance at September 30, 2016 |  | $ | 13,858
Balance at December 31, 2015 |  | $ | 13,577
Impairment charges recognized during period |  |  | 281
Balance at September 30, 2016 |  | $ | 13,858
The following table presents a reconciliation of credit-related impairment charges on available-for-sale investment recognized in earnings for the three and nine months ended September 30, 2015 (Dollars in Thousands):
Balance at June 30, 2015 |  | $ | 13,074
Impairment charges recognized during period |  |  | 249
Balance at September 30, 2015 |  | $ | 13,323
Balance at December 31, 2014 |  | $ | 12,623
Impairment charges recognized during period |  |  | 700
Balance at September 30, 2015 |  | $ | 13,323

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