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Securities (Tables) | 3 Months Ended
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Mar. 31, 2016
Summary of Portfolio of Securities Available for Sale | The following tables summarize the Company’s portfolio of securities available for sale at March 31, 2016 and December 31, 2015:
|  | March 31, 2016 |
(in thousands) |  | Amortized Cost |  |  | Gross Unrealized Gain |  |  | Gross Unrealized Loss |  |  | Fair Value |
Municipal bonds |  | $ | 727 |  |  | $ | 73 |  |  | $ | — |  |  | $ | 800 |
Capital trust notes |  |  | 9,448 |  |  |  | — |  |  |  | 2,607 |  |  |  | 6,841 |
Preferred stock |  |  | 118,205 |  |  |  | 9,184 |  |  |  | 275 |  |  |  | 127,114 |
Mutual funds and common stock (1) |  |  | 16,876 |  |  |  | 618 |  |  |  | — |  |  |  | 17,494 |
Total securities available for sale |  | $ | 145,256 |  |  | $ | 9,875 |  |  | $ | 2,882 |  |  | $ | 152,249 |
(1) | Primarily consists of mutual funds that are Community Reinvestment Act-qualified investments.
|  | December 31, 2015 |
(in thousands) |  | Amortized Cost |  |  | Gross Unrealized Gain |  |  | Gross Unrealized Loss |  |  | Fair Value |
Mortgage-Related Securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
GSE certificates (1) |  | $ | 53,820 |  |  | $ | 33 |  |  | $ | 1 |  |  | $ | 53,852 |
Other Securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Municipal bonds |  | $ | 725 |  |  | $ | 70 |  |  | $ | — |  |  | $ | 795 |
Capital trust notes |  |  | 9,444 |  |  |  | — |  |  |  | 2,480 |  |  |  | 6,964 |
Preferred stock |  |  | 118,205 |  |  |  | 7,415 |  |  |  | 248 |  |  |  | 125,372 |
Common stock |  |  | 16,877 |  |  |  | 470 |  |  |  | 75 |  |  |  | 17,272 |
Total other securities |  | $ | 145,251 |  |  | $ | 7,955 |  |  | $ | 2,803 |  |  | $ | 150,403 |
Total securities available for sale |  | $ | 199,071 |  |  | $ | 7,988 |  |  | $ | 2,804 |  |  | $ | 204,255 |
(1) | Government-sponsored enterprise.
Summary of Portfolio of Securities Held to Maturity | The following tables summarize the Company’s portfolio of securities held to maturity at March 31, 2016 and December 31, 2015:
|  | March 31, 2016 |
(in thousands) |  | Amortized Cost |  |  | Carrying Amount |  |  | Gross Unrealized Gain |  |  | Gross Unrealized Loss |  |  | Fair Value |
Mortgage-Related Securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
GSE certificates |  | $ | 2,256,996 |  |  | $ | 2,256,996 |  |  | $ | 140,529 |  |  | $ | 54 |  |  | $ | 2,397,471 |
GSE CMOs (1) |  |  | 1,229,105 |  |  |  | 1,229,105 |  |  |  | 76,401 |  |  |  | — |  |  |  | 1,305,506 |
Total mortgage-related securities |  | $ | 3,486,101 |  |  | $ | 3,486,101 |  |  | $ | 216,930 |  |  | $ | 54 |  |  | $ | 3,702,977 |
Other Securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
GSE debentures |  | $ | 368,784 |  |  | $ | 368,784 |  |  | $ | 19,461 |  |  | $ | — |  |  | $ | 388,245 |
Municipal bonds |  |  | 74,419 |  |  |  | 74,419 |  |  |  | 1,661 |  |  |  | — |  |  |  | 76,080 |
Corporate bonds |  |  | 73,871 |  |  |  | 73,871 |  |  |  | 11,049 |  |  |  | — |  |  |  | 84,920 |
Capital trust notes |  |  | 74,262 |  |  |  | 65,575 |  |  |  | 3,058 |  |  |  | 16,694 |  |  |  | 51,939 |
Total other securities |  | $ | 591,336 |  |  | $ | 582,649 |  |  | $ | 35,229 |  |  | $ | 16,694 |  |  | $ | 601,184 |
Total securities held to maturity (2) |  | $ | 4,077,437 |  |  | $ | 4,068,750 |  |  | $ | 252,159 |  |  | $ | 16,748 |  |  | $ | 4,304,161 |
(1) | Collateralized mortgage obligations.
(2) | Held-to-maturity securities are reported at a carrying amount equal to amortized cost less the non-credit portion of OTTI recorded in Accumulated Other Comprehensive Loss (“AOCL”). At March 31, 2016, the non-credit portion of OTTI recorded in AOCL was $8.7 million, pre-tax.
|  | December 31, 2015 |
(in thousands) |  | Amortized Cost |  |  | Carrying Amount |  |  | Gross Unrealized Gain |  |  | Gross Unrealized Loss |  |  | Fair Value |
Mortgage-Related Securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
GSE certificates |  | $ | 2,269,828 |  |  | $ | 2,269,828 |  |  | $ | 76,827 |  |  | $ | 4,722 |  |  | $ | 2,341,933 |
GSE CMOs (1) |  |  | 1,325,033 |  |  |  | 1,325,033 |  |  |  | 53,236 |  |  |  | 57 |  |  |  | 1,378,212 |
Total mortgage-related securities |  | $ | 3,594,861 |  |  | $ | 3,594,861 |  |  | $ | 130,063 |  |  | $ | 4,779 |  |  | $ | 3,720,145 |
Other Securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
GSE debentures |  | $ | 2,159,856 |  |  | $ | 2,159,856 |  |  | $ | 23,892 |  |  | $ | 7,568 |  |  | $ | 2,176,180 |
Municipal bonds |  |  | 75,317 |  |  |  | 75,317 |  |  |  | 262 |  |  |  | 1,084 |  |  |  | 74,495 |
Corporate bonds |  |  | 73,756 |  |  |  | 73,756 |  |  |  | 10,503 |  |  |  | — |  |  |  | 84,259 |
Capital trust notes |  |  | 74,317 |  |  |  | 65,600 |  |  |  | 3,750 |  |  |  | 15,900 |  |  |  | 53,450 |
Total other securities |  | $ | 2,383,246 |  |  | $ | 2,374,529 |  |  | $ | 38,407 |  |  | $ | 24,552 |  |  | $ | 2,388,384 |
Total securities held to maturity (2) |  | $ | 5,978,107 |  |  | $ | 5,969,390 |  |  | $ | 168,470 |  |  | $ | 29,331 |  |  | $ | 6,108,529 |
(1) | Collateralized mortgage obligations.
(2) | Held-to-maturity securities are reported at a carrying amount equal to amortized cost less the non-credit portion of OTTI recorded in AOCL. At December 31, 2015, the non-credit portion of OTTI recorded in AOCL was $8.7 million, pre-tax.
Summary of Gross Proceeds and Gross Realized Gains from Sale of Available-for-Sale Securities | The following table summarizes the gross proceeds and gross realized gains from the sale of available-for-sale securities during the three months ended March 31, 2016 and 2015:
|  | For the Three Months Ended March 31, |
(in thousands) |  | 2016 |  |  | 2015 |
Gross proceeds |  | $ | 104,663 |  |  | $ | 135,211 |
Gross realized gains |  |  | 163 |  |  |  | 211 |
Credit Loss Component of Other Than Temporary Impairment on Debt Securities | In the following table, the beginning balance represents the credit loss component for debt securities on which OTTI occurred prior to January 1, 2016. For credit-impaired debt securities, OTTI recognized in earnings after that date is presented as an addition in two components, based upon whether the current period is the first time a debt security was credit-impaired (initial credit impairment) or is not the first time a debt security was credit-impaired (subsequent credit impairment).
(in thousands) |  | For the Three Months Ended March 31, 2016 |
Beginning credit loss amount as of January 1, 2016 |  | $ | 198,766 |
Add: Initial other-than-temporary credit losses |  |  | — |
Subsequent other-than-temporary credit losses |  |  | — |
Amount previously recognized in AOCL |  |  | — |
Less: Realized losses for securities sold |  |  | — |
Securities intended or required to be sold |  |  | — |
Increase in expected cash flows on debt securities |  |  | — |
Ending credit loss amount as of March 31, 2016 |  | $ | 198,766 |
Summary of Carrying Amount and Estimated Fair Value of Held-to-Maturity Debt Securities and Amortized Cost and Estimated Fair Value of Available-for-Sale Debt Securities by Contractual Maturity | The following table summarizes the carrying amounts and estimated fair values of held-to-maturity mortgage-backed securities and debt securities, and the amortized costs and estimated fair values of available-for-sale securities, at March 31, 2016, by contractual maturity.
|  | At March 31, 2016 |  |  |  |
(dollars in thousands) |  | Mortgage- Related Securities |  |  | Average Yield |  |  | U.S. Treasury and GSE Obligations |  |  | Average Yield |  |  | State, County, and Municipal |  |  | Average Yield (1) |  |  | Other Debt Securities (2) |  |  | Average Yield |  |  | Fair Value |
Held-to-Maturity Securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Due within one year |  | $ | — |  |  |  | — | % |  | $ | — |  |  |  | — | % |  | $ | 327 |  |  |  | 2.96 | % |  | $ | — |  |  |  | — | % |  | $ | 328 |
Due from one to five years |  |  | 358,897 |  |  |  | 3.74 |  |  |  | 59,792 |  |  |  | 4.17 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 452,138 |
Due from five to ten years |  |  | 2,709,236 |  |  |  | 3.23 |  |  |  | 308,992 |  |  |  | 3.14 |  |  |  | — |  |  |  | — |  |  |  | 64,211 |  |  |  | 4.74 |  |  |  | 3,279,755 |
Due after ten years |  |  | 417,968 |  |  |  | 2.93 |  |  |  | — |  |  |  | — |  |  |  | 74,092 |  |  |  | 2.89 |  |  |  | 75,235 |  |  |  | 5.14 |  |  |  | 571,940 |
Total securities held to maturity |  | $ | 3,486,101 |  |  |  | 3.25 | % |  | $ | 368,784 |  |  |  | 3.31 | % |  | $ | 74,419 |  |  |  | 2.89 | % |  | $ | 139,446 |  |  |  | 4.96 | % |  | $ | 4,304,161 |
Available-for-Sale Securities: (3) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Due within one year |  | $ | — |  |  |  | — | % |  | $ | — |  |  |  | — | % |  | $ | 149 |  |  |  | 6.39 | % |  | $ | — |  |  |  | — | % |  | $ | 154 |
Due from one to five years |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 578 |  |  |  | 6.56 |  |  |  | — |  |  |  | — |  |  |  | 646 |
Due from five to ten years |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Due after ten years |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 9,448 |  |  |  | 4.46 |  |  |  | 6,841 |
Total securities available for sale |  | $ | — |  |  |  | — | % |  | $ | — |  |  |  | — | % |  | $ | 727 |  |  |  | 6.52 | % |  | $ | 9,448 |  |  |  | 4.46 | % |  | $ | 7,641 |
(1) | Not presented on a tax-equivalent basis.
(2) | Includes corporate bonds and capital trust notes
(3) | As equity securities have no contractual maturity, they have been excluded from this table.
Summary of Held-to-Maturity and Available-for-Sale Securities having Continuous Unrealized Loss Position | The following table presents held-to-maturity and available-for-sale securities having a continuous unrealized loss position for less than twelve months and for twelve months or longer as of March 31, 2016:
At March 31, 2016 |  | Less than Twelve Months |  |  | Twelve Months or Longer |  |  | Total |
(in thousands) |  | Fair Value |  |  | Unrealized Loss |  |  | Fair Value |  |  | Unrealized Loss |  |  | Fair Value |  |  | Unrealized Loss |
Temporarily Impaired Held-to-Maturity Securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
GSE certificates |  | $ | 7,769 |  |  | $ | 14 |  |  | $ | 5,069 |  |  | $ | 40 |  |  | $ | 12,838 |  |  | $ | 54 |
GSE CMOs |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Municipal bonds |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Capital trust notes |  |  | 24,753 |  |  |  | 247 |  |  |  | 19,770 |  |  |  | 16,447 |  |  |  | 44,523 |  |  |  | 16,694 |
Total temporarily impaired held-to-maturity securities |  | $ | 32,522 |  |  | $ | 261 |  |  | $ | 24,839 |  |  | $ | 16,487 |  |  | $ | 57,361 |  |  | $ | 16,748 |
Temporarily Impaired Available-for-Sale Securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital trust notes |  |  | 1,980 |  |  |  | 20 |  |  |  | 4,861 |  |  |  | 2,587 |  |  |  | 6,841 |  |  |  | 2,607 |
Equity securities |  |  | 15,017 |  |  |  | 275 |  |  |  | — |  |  |  | — |  |  |  | 15,017 |  |  |  | 275 |
Total temporarily impaired available-for-sale securities |  | $ | 16,997 |  |  | $ | 295 |  |  | $ | 4,861 |  |  | $ | 2,587 |  |  | $ | 21,858 |  |  | $ | 2,882 |
The following table presents held-to-maturity and available-for-sale securities having a continuous unrealized loss position for less than twelve months and for twelve months or longer as of December 31, 2015:
At December 31, 2015 |  | Less than Twelve Months |  |  | Twelve Months or Longer |  |  | Total |
(in thousands) |  | Fair Value |  |  | Unrealized Loss |  |  | Fair Value |  |  | Unrealized Loss |  |  | Fair Value |  |  | Unrealized Loss |
Temporarily Impaired Held-to-Maturity Securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
GSE debentures |  | $ | 547,484 |  |  | $ | 728 |  |  | $ | 1,176,949 |  |  | $ | 6,840 |  |  | $ | 1,724,433 |  |  | $ | 7,568 |
GSE certificates |  |  | 299,019 |  |  |  | 4,608 |  |  |  | 3,899 |  |  |  | 114 |  |  |  | 302,918 |  |  |  | 4,722 |
GSE CMOs |  |  | 9,943 |  |  |  | 57 |  |  |  | — |  |  |  | — |  |  |  | 9,943 |  |  |  | 57 |
Municipal bonds |  |  | 42,083 |  |  |  | 1,084 |  |  |  | — |  |  |  | — |  |  |  | 42,083 |  |  |  | 1,084 |
Capital trust notes |  |  | 24,601 |  |  |  | 399 |  |  |  | 20,710 |  |  |  | 15,501 |  |  |  | 45,311 |  |  |  | 15,900 |
Total temporarily impaired held-to-maturity securities |  | $ | 923,130 |  |  | $ | 6,876 |  |  | $ | 1,201,558 |  |  | $ | 22,455 |  |  | $ | 2,124,688 |  |  | $ | 29,331 |
Temporarily Impaired Available-for-Sale Securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
GSE certificates |  | $ | 51,959 |  |  | $ | 1 |  |  | $ | — |  |  | $ | — |  |  | $ | 51,959 |  |  | $ | 1 |
Capital trust notes |  |  | 1,968 |  |  |  | 32 |  |  |  | 4,997 |  |  |  | 2,448 |  |  |  | 6,965 |  |  |  | 2,480 |
Equity securities |  |  | 51,775 |  |  |  | 323 |  |  |  | — |  |  |  | — |  |  |  | 51,775 |  |  |  | 323 |
Total temporarily impaired available-for-sale securities |  | $ | 105,702 |  |  | $ | 356 |  |  | $ | 4,997 |  |  | $ | 2,448 |  |  | $ | 110,699 |  |  | $ | 2,804 |

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