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Investment Securities (Tables) | 9 Months Ended
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Sep. 30, 2017
Marketable Securities [Abstract] |
Schedule Of FHN's Investment Securities | The following tables summarize FHN’s investment securities on September 30, 2017 and December 31, 2016:
|  | September 30, 2017
(Dollars in thousands) |  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
Securities available-for-sale: |  |  |  |  |  |  |  |
U.S. treasuries |  | $ | 100 |  |  | $ | — |  |  | $ | — |  |  | $ | 100 |
Government agency issued mortgage-backed securities (“MBS”) |  | 2,081,677 |  |  | 15,993 |  |  | (10,165 | ) |  | 2,087,505 |
Government agency issued collateralized mortgage obligations (“CMO”) |  | 1,701,467 |  |  | 4,295 |  |  | (19,767 | ) |  | 1,685,995 |
Equity and other (a) |  | 186,413 |  |  | 2 |  |  | — |  |  | 186,415 |
|  | $ | 3,969,657 |  |  | $ | 20,290 |  |  | $ | (29,932 | ) |  | 3,960,015 |
AFS debt securities recorded at fair value through earnings: |  |  |  |  |  |  |  |
SBA-interest only strips (b) |  |  |  |  |  |  |  | 3,123 |
Total securities available-for-sale (c) |  |  |  |  |  |  |  | $ | 3,963,138 |
Securities held-to-maturity: |  |  |  |  |  |  |  |
Corporate bonds |  | $ | 10,000 |  |  | $ | — |  |  | $ | (15 | ) |  | $ | 9,985 |
Total securities held-to-maturity |  | $ | 10,000 |  |  | $ | — |  |  | $ | (15 | ) |  | $ | 9,985 |
(a) | Includes restricted investments in FHLB-Cincinnati stock of $87.9 million and FRB stock of $68.6 million. The remainder is money market, mutual funds, and cost method investments.
(b) | SBA-interest only strips are recorded at elected fair value. See Note 16 - Fair Value for additional information.
(c) | Includes $3.3 billion of securities pledged to secure public deposits, securities sold under agreements to repurchase, and for other purposes.
|  | December 31, 2016
(Dollars in thousands) |  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
Securities available-for-sale: |  |  |  |  |  |  |  |
U.S. treasuries |  | $ | 100 |  |  | $ | — |  |  | $ | — |  |  | $ | 100 |
Government agency issued MBS |  | 2,217,593 |  |  | 14,960 |  |  | (23,866 | ) |  | 2,208,687 |
Government agency issued CMO |  | 1,566,986 |  |  | 4,909 |  |  | (23,937 | ) |  | 1,547,958 |
Equity and other (a) |  | 186,756 |  |  | — |  |  | (2 | ) |  | 186,754 |
Total securities available-for-sale (b) |  | $ | 3,971,435 |  |  | $ | 19,869 |  |  | $ | (47,805 | ) |  | $ | 3,943,499 |
Securities held-to-maturity: |  |  |  |  |  |  |  |
States and municipalities |  | $ | 4,347 |  |  | $ | 393 |  |  | $ | — |  |  | $ | 4,740 |
Corporate bonds |  | 10,000 |  |  | 33 |  |  | — |  |  | 10,033 |
Total securities held-to-maturity |  | $ | 14,347 |  |  | $ | 426 |  |  | $ | — |  |  | $ | 14,773 |
(a) | Includes restricted investments in FHLB-Cincinnati stock of $87.9 million and FRB stock of $68.6 million. The remainder is money market, mutual funds, and cost method investments.
(b) | Includes $3.3 billion of securities pledged to secure public deposits, securities sold under agreements to repurchase, and for other purposes.
Schedule Of Amortized Cost And Fair Value By Contractual Maturity | The amortized cost and fair value by contractual maturity for the available-for-sale and held-to-maturity securities portfolios on September 30, 2017 are provided below:
|  | Held-to-Maturity |  | Available-for-Sale
(Dollars in thousands) |  | Amortized Cost |  | Fair Value |  | Amortized Cost |  | Fair Value
Within 1 year |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
After 1 year; within 5 years |  | — |  |  | — |  |  | 100 |  |  | 120 |
After 5 years; within 10 years |  | 10,000 |  |  | 9,985 |  |  | — |  |  | 1,464 |
After 10 years |  | — |  |  | — |  |  | — |  |  | 1,639 |
Subtotal |  | 10,000 |  |  | 9,985 |  |  | 100 |  |  | 3,223 |
Government agency issued MBS and CMO (a) |  | — |  |  | — |  |  | 3,783,144 |  |  | 3,773,500 |
Equity and other |  | — |  |  | — |  |  | 186,413 |  |  | 186,415 |
Total |  | $ | 10,000 |  |  | $ | 9,985 |  |  | $ | 3,969,657 |  |  | $ | 3,963,138 |
(a) | Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
Schedule Of Gross Gains And Losses On Sale From Available For Sale Portfolio | The table below provides information on gross gains and gross losses from investment securities for the three and nine months ended September 30:
| Three Months Ended September 30 |  | Nine Months Ended September 30
(Dollars in thousands) | 2017 |  | 2016 |  | 2017 |  | 2016
Gross gains on sales of securities | $ | 6 |  |  | $ | — |  |  | $ | 455 |  |  | $ | 3,999 |
Gross (losses) on sales of securities | — |  |  | — |  |  | — |  |  | (2,326 | )
Net gain/(loss) on sales of securities (a) (b) | 6 |  |  | — |  |  | 455 |  |  | 1,673 |
Net OTTI recorded (c) | — |  |  | (200 | ) |  | — |  |  | (200 | )
Total securities gain/(loss) | $ | 6 |  |  | $ | (200 | ) |  | $ | 455 |  |  | $ | 1,473 |
(a) | Cash proceeds from the sale of available-for-sale securities for the three and nine months ended September 30, 2017 were not material. There were no cash proceeds from the sale of available-for-sale securities for the three months ended September 30, 2016. Cash proceeds from the sale of available-for-sale securities for the nine months ended September 30, 2016 were $1.5 million and included a $1.7 million gain from an exchange of approximately $294 million of AFS debt securities.
(b) | Nine months ended September 30, 2017 includes a $.4 million gain associated with the call of a $4.4 million held-to-maturity municipal bond.
(c) | OTTI recorded is related to equity securities.
Schedule Of Investments Within The Available For Sale Portfolio That Had Unrealized Losses | The following tables provide information on investments within the available-for-sale portfolio that had unrealized losses as of September 30, 2017 and December 31, 2016:
|  | As of September 30, 2017
|  | Less than 12 months |  | 12 months or longer |  | Total
(Dollars in thousands) |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses
Government agency issued CMO |  | $ | 885,926 |  |  | $ | (10,936 | ) |  | $ | 311,471 |  |  | $ | (8,831 | ) |  | $ | 1,197,397 |  |  | $ | (19,767 | )
Government agency issued MBS |  | 875,307 |  |  | (8,770 | ) |  | 34,184 |  |  | (1,395 | ) |  | 909,491 |  |  | (10,165 | )
Total temporarily impaired securities |  | 1,761,233 |  |  | (19,706 | ) |  | 345,655 |  |  | (10,226 | ) |  | 2,106,888 |  |  | (29,932 | )
|  | As of December 31, 2016
|  | Less than 12 months |  | 12 months or longer |  | Total
(Dollars in thousands) |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses
Government agency issued CMO |  | $ | 1,059,471 |  |  | $ | (19,052 | ) |  | $ | 116,527 |  |  | $ | (4,885 | ) |  | $ | 1,175,998 |  |  | $ | (23,937 | )
Government agency issued MBS |  | 1,912,126 |  |  | (23,866 | ) |  | — |  |  | — |  |  | 1,912,126 |  |  | (23,866 | )
Total debt securities |  | 2,971,597 |  |  | (42,918 | ) |  | 116,527 |  |  | (4,885 | ) |  | 3,088,124 |  |  | (47,803 | )
Equity |  | 7 |  |  | (2 | ) |  | — |  |  | — |  |  | 7 |  |  | (2 | )
Total temporarily impaired securities |  | $ | 2,971,604 |  |  | $ | (42,920 | ) |  | $ | 116,527 |  |  | $ | (4,885 | ) |  | $ | 3,088,131 |  |  | $ | (47,805 | )

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- Definition Tabular disclosure of gross gains and gross losses from investment securities, including unrealized losses and net OTTI recorded. + References No definition available. + Details
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- Definition For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27290-111563 + Details
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