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Securities | 12 Months Ended
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Dec. 31, 2015
Securities [Abstract] |
Securities | 3. Securities Securities are classified into held-to-maturity and available-for-sale categories. Held-to-maturity (HTM) securities are those that CTBI has the positive intent and ability to hold to maturity and are reported at amortized cost. Available-for-sale (AFS) securities are those that CTBI may decide to sell if needed for liquidity, asset-liability management or other reasons. Available-for-sale securities are reported at fair value, with unrealized gains or losses included as a separate component of equity, net of tax. The amortized cost and fair value of securities at December 31, 2015 are summarized as follows: Available-for-Sale
(in thousands) |  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
U.S. Treasury and government agencies |  | $ | 240,434 |  |  | $ | 311 |  |  | $ | (1,351 | ) |  | $ | 239,394 |
State and political subdivisions |  |  | 125,665 |  |  |  | 3,707 |  |  |  | (157 | ) |  |  | 129,215 |
U.S. government sponsored agency mortgage-backed securities |  |  | 202,282 |  |  |  | 1,564 |  |  |  | (2,270 | ) |  |  | 201,576 |
Total debt securities |  |  | 568,381 |  |  |  | 5,582 |  |  |  | (3,778 | ) |  |  | 570,185 |
CRA investment funds |  |  | 25,000 |  |  |  | 0 |  |  |  | (249 | ) |  |  | 24,751 |
Total available-for-sale securities |  | $ | 593,381 |  |  | $ | 5,582 |  |  | $ | (4,027 | ) |  | $ | 594,936 |
Held-to-Maturity
(in thousands) |  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
U.S. Treasury and government agencies |  | $ | 480 |  |  | $ | 0 |  |  | $ | (12 | ) |  | $ | 468 |
State and political subdivisions |  |  | 1,181 |  |  |  | 2 |  |  |  | 0 |  |  |  | 1,183 |
Total held-to-maturity securities |  | $ | 1,661 |  |  | $ | 2 |  |  | $ | (12 | ) |  | $ | 1,651 |
The amortized cost and fair value of securities at December 31, 2014 are summarized as follows: Available-for-Sale
(in thousands) |  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
U.S. Treasury and government agencies |  | $ | 190,563 |  |  | $ | 509 |  |  | $ | (2,140 | ) |  | $ | 188,932 |
State and political subdivisions |  |  | 133,951 |  |  |  | 3,973 |  |  |  | (466 | ) |  |  | 137,458 |
U.S. government sponsored agency mortgage-backed securities |  |  | 288,881 |  |  |  | 2,876 |  |  |  | (2,850 | ) |  |  | 288,907 |
Total debt securities |  |  | 613,395 |  |  |  | 7,358 |  |  |  | (5,456 | ) |  |  | 615,297 |
CRA investment funds |  |  | 25,000 |  |  |  | 0 |  |  |  | (111 | ) |  |  | 24,889 |
Total available-for-sale securities |  | $ | 638,395 |  |  | $ | 7,358 |  |  | $ | (5,567 | ) |  | $ | 640,186 |
Held-to-Maturity
(in thousands) |  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
U.S. Treasury and government agencies |  | $ | 480 |  |  | $ | 0 |  |  | $ | (19 | ) |  | $ | 461 |
State and political subdivisions |  |  | 1,182 |  |  |  | 1 |  |  |  | 0 |  |  |  | 1,183 |
Total held-to-maturity securities |  | $ | 1,662 |  |  | $ | 1 |  |  | $ | (19 | ) |  | $ | 1,644 |
The amortized cost and fair value of securities at December 31, 2015 by contractual maturity are shown below. Expected maturities will differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties.
|  | Available-for-Sale |  |  | Held-to-Maturity |
(in thousands) |  | Amortized Cost |  |  | Fair Value |  |  | Amortized Cost |  |  | Fair Value |
Due in one year or less |  | $ | 43,386 |  |  | $ | 43,403 |  |  | $ | 0 |  |  | $ | 0 |
Due after one through five years |  |  | 189,343 |  |  |  | 189,131 |  |  |  | 1,181 |  |  |  | 1,183 |
Due after five through ten years |  |  | 86,596 |  |  |  | 88,577 |  |  |  | 480 |  |  |  | 468 |
Due after ten years |  |  | 46,774 |  |  |  | 47,498 |  |  |  | 0 |  |  |  | 0 |
U.S. government sponsored agency mortgage-backed securities |  |  | 202,282 |  |  |  | 201,576 |  |  |  | 0 |  |  |  | 0 |
Total debt securities |  |  | 568,381 |  |  |  | 570,185 |  |  |  | 1,661 |  |  |  | 1,651 |
CRA investment funds |  |  | 25,000 |  |  |  | 24,751 |  |  |  | 0 |  |  |  | 0 |
Total securities |  | $ | 593,381 |  |  | $ | 594,936 |  |  | $ | 1,661 |  |  | $ | 1,651 |
In 2015, there was a net loss of $106 thousand realized on sales and calls of AFS securities, consisting of a pre-tax gain of $839 thousand and a pre-tax loss of $945 thousand. There was a net loss of $211 thousand realized in 2014 and a net loss of $45 thousand realized in 2013. The amortized cost of securities pledged as collateral, to secure public deposits and for other purposes, was $228.2 million at December 31, 2015 and $267.1 million at December 31, 2014. The amortized cost of securities sold under agreements to repurchase amounted to $285.5 million at December 31, 2015 and $280.9 million at December 31, 2014. CTBI evaluates its investment portfolio on a quarterly basis for impairment. The analysis performed as of December 31, 2015 indicates that all impairment is considered temporary, market and interest rate driven, and not credit-related. The percentage of total investments with unrealized losses as of December 31, 2015 was 62.8% compared to 44.1% as of December 31, 2014. The following tables provide the amortized cost, gross unrealized losses, and fair market value, aggregated by investment category and length of time the individual securities have been in a continuous unrealized loss position as of December 31, 2015 that are not deemed to be other-than-temporarily impaired. Available-for-Sale
(in thousands) |  | Amortized Cost |  |  | Gross Unrealized Losses |  |  | Fair Value |
Less Than 12 Months |  |  |  |  |  |  |  |  |
U.S. Treasury and government agencies |  | $ | 142,147 |  |  | $ | (487 | ) |  | $ | 141,660 |
State and political subdivisions |  |  | 11,190 |  |  |  | (106 | ) |  |  | 11,084 |
U.S. government sponsored agency mortgage-backed securities |  |  | 92,009 |  |  |  | (899 | ) |  |  | 91,110 |
Total debt securities |  |  | 245,346 |  |  |  | (1,492 | ) |  |  | 243,854 |
CRA investment funds |  |  | 25,000 |  |  |  | (249 | ) |  |  | 24,751 |
Total <12 months temporarily impaired AFS securities |  |  | 270,346 |  |  |  | (1,741 | ) |  |  | 268,605 |
12 Months or More |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury and government agencies |  |  | 54,772 |  |  |  | (864 | ) |  |  | 53,908 |
State and political subdivisions |  |  | 3,187 |  |  |  | (51 | ) |  |  | 3,136 |
U.S. government sponsored agency mortgage-backed securities |  |  | 49,908 |  |  |  | (1,371 | ) |  |  | 48,537 |
Total debt securities |  |  | 107,867 |  |  |  | (2,286 | ) |  |  | 105,581 |
CRA investment funds |  |  | 0 |  |  |  | 0 |  |  |  | 0 |
Total ≥12 months temporarily impaired AFS securities |  |  | 107,867 |  |  |  | (2,286 | ) |  |  | 105,581 |
Total |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury and government agencies |  |  | 196,919 |  |  |  | (1,351 | ) |  |  | 195,568 |
State and political subdivisions |  |  | 14,377 |  |  |  | (157 | ) |  |  | 14,220 |
U.S. government sponsored agency mortgage-backed securities |  |  | 141,917 |  |  |  | (2,270 | ) |  |  | 139,647 |
Total debt securities |  |  | 353,213 |  |  |  | (3,778 | ) |  |  | 349,435 |
CRA investment funds |  |  | 25,000 |  |  |  | (249 | ) |  |  | 24,751 |
Total temporarily impaired AFS securities |  | $ | 378,213 |  |  | $ | (4,027 | ) |  | $ | 374,186 |
Held-to-Maturity
(in thousands) |  | Amortized Cost |  |  | Gross Unrealized Losses |  |  | Fair Value |
12 Months or More |  |  |  |  |  |  |  |  |
U.S. Treasury and government agencies |  | $ | 480 |  |  | $ | (12 | ) |  | $ | 468 |
Total temporarily impaired HTM securities |  | $ | 480 |  |  | $ | (12 | ) |  | $ | 468 |
U.S. Treasury and Government Agencies The unrealized losses in U.S. Treasury and government agencies were caused by interest rate increases. The contractual terms of those investments do not permit the issuer to settle the securities at a price less than amortized cost. CTBI does not consider those investments to be other-than-temporarily impaired at December 31, 2015, because CTBI does not intend to sell the investments and it is not more likely than not that we will be required to sell the investments before recovery of their amortized cost, which may be maturity. State and Political Subdivisions The unrealized losses in securities of state and political subdivisions were caused by interest rate increases. The contractual terms of those investments do not permit the issuer to settle the securities at a price less than amortized cost. CTBI does not consider those investments to be other-than-temporarily impaired at December 31, 2015, because CTBI does not intend to sell the investments before recovery of their amortized cost, which may be maturity. U.S. Government Sponsored Agency Mortgage-Backed Securities The unrealized losses in U.S. government sponsored agency mortgage-backed securities were caused by interest rate increases. CTBI expects to recover the amortized cost basis over the term of the securities. CTBI does not consider those investments to be other-than-temporarily impaired at December 31, 2015, because (i) the decline in market value is attributable to changes in interest rates and not credit quality, (ii) CTBI does not intend to sell the investments, and (iii) it is not more likely than not we will be required to sell the investments before recovery of their amortized cost, which may be maturity. CRA Investment Funds CTBI's CRA investment funds consist of investments in fixed income mutual funds ($24.8 million of the total fair value and $249 thousand of the total unrealized losses in common stock investments). The severity of the impairment (fair value is approximately 1.0% less than cost) and the duration of the impairment correlates with the decline in long-term interest rates in 2015. CTBI evaluated the near-term prospects of these funds in relation to the severity and duration of the impairment. Based on that evaluation, CTBI does not consider those investments to be other-than-temporarily impaired at December 31, 2015. The analysis performed as of December 31, 2014 indicated that all impairment was considered temporary, market and interest rate driven, and not credit-related. The following tables provide the amortized cost, gross unrealized losses, and fair market value, aggregated by investment category and length of time the individual securities have been in a continuous unrealized loss position as of December 31, 2014 that are not deemed to be other-than-temporarily impaired. Available-for-Sale
(in thousands) |  | Amortized Cost |  |  | Gross Unrealized Losses |  |  | Fair Value |
Less Than 12 Months |  |  |  |  |  |  |  |  |
U.S. Treasury and government agencies |  | $ | 31,185 |  |  | $ | (87 | ) |  | $ | 31,098 |
State and political subdivisions |  |  | 8,800 |  |  |  | (23 | ) |  |  | 8,777 |
U.S. government sponsored agency mortgage-backed securities |  |  | 50,115 |  |  |  | (442 | ) |  |  | 49,673 |
Total debt securities |  |  | 90,100 |  |  |  | (552 | ) |  |  | 89,548 |
CRA investment funds |  |  | 25,000 |  |  |  | (111 | ) |  |  | 24,889 |
Total <12 months temporarily impaired AFS securities |  |  | 115,100 |  |  |  | (663 | ) |  |  | 114,437 |
12 Months or More |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury and government agencies |  |  | 65,209 |  |  |  | (2,053 | ) |  |  | 63,156 |
State and political subdivisions |  |  | 21,308 |  |  |  | (443 | ) |  |  | 20,865 |
U.S. government sponsored agency mortgage-backed securities |  |  | 86,389 |  |  |  | (2,408 | ) |  |  | 83,981 |
Total debt securities |  |  | 172,906 |  |  |  | (4,904 | ) |  |  | 168,002 |
CRA investment funds |  |  | 0 |  |  |  | 0 |  |  |  | 0 |
Total ≥12 months temporarily impaired AFS securities |  |  | 172,906 |  |  |  | (4,904 | ) |  |  | 168,002 |
Total |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury and government agencies |  |  | 96,394 |  |  |  | (2,140 | ) |  |  | 94,254 |
State and political subdivisions |  |  | 30,108 |  |  |  | (466 | ) |  |  | 29,642 |
U.S. government sponsored agency mortgage-backed securities |  |  | 136,504 |  |  |  | (2,850 | ) |  |  | 133,654 |
Total debt securities |  |  | 263,006 |  |  |  | (5,456 | ) |  |  | 257,550 |
CRA investment funds |  |  | 25,000 |  |  |  | (111 | ) |  |  | 24,889 |
Total temporarily impaired AFS securities |  | $ | 288,006 |  |  | $ | (5,567 | ) |  | $ | 282,439 |
Held-to-Maturity
(in thousands) |  | Amortized Cost |  |  | Gross Unrealized Losses |  |  | Fair Value |
12 Months or More |  |  |  |  |  |  |  |  |
U.S. Treasury and government agencies |  | $ | 480 |  |  | $ | (19 | ) |  | $ | 461 |
Total temporarily impaired HTM securities |  | $ | 480 |  |  | $ | (19 | ) |  | $ | 461 |

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