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Investment Securities (Tables) | 3 Months Ended
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Mar. 31, 2015
Investment Securities [Abstract] |
Amortized Cost And Fair Value Of Investment Securities |
|  | Amortized |  | Unrealized |  | Unrealized |  | Fair
|  | Cost |  | Gains |  | Losses |  | Value
March 31, 2015 |  |  |  |  |  |  |  |
Securities available for sale: |  |  |  |  |  |  |  |
U.S. Government agencies and government |  |  |  |  |  |  |  |
sponsored enterprises | $ | 176,648 | $ | 2,324 | $ | 304 | $ | 178,668
Mortgage-backed securities: |  |  |  |  |  |  |  |
Federal National Mortgage Association |  | 187,368 |  | 3,067 |  | 437 |  | 189,998
Federal Home Loan Mortgage Corporation |  | 25,892 |  | 769 |  | 8 |  | 26,653
Government National Mortgage Association |  | 46,584 |  | 2,093 |  | - |  | 48,677
Collateralized mortgage obligations: |  |  |  |  |  |  |  |
Federal National Mortgage Association |  | 76,408 |  | 969 |  | 583 |  | 76,794
Federal Home Loan Mortgage Corporation |  | 90,875 |  | 233 |  | 1,521 |  | 89,587
Government National Mortgage Association |  | 26,965 |  | 545 |  | 12 |  | 27,498
Privately issued |  | - |  | 1,169 |  | - |  | 1,169
Total collateralized mortgage obligations |  | 194,248 |  | 2,916 |  | 2,116 |  | 195,048
Total mortgage-backed securities |  | 454,092 |  | 8,845 |  | 2,561 |  | 460,376
Asset-backed securities |  | - |  | 231 |  | - |  | 231
Total available for sale securities | $ | 630,740 | $ | 11,400 | $ | 2,865 | $ | 639,275
Securities held to maturity: |  |  |  |  |  |  |  |
State and political subdivisions |  | 285,630 |  | 6,121 |  | 28 |  | 291,723
Mortgage-backed securities: |  |  |  |  |  |  |  |
Federal National Mortgage Association |  | 3,253 |  | 55 |  | - |  | 3,308
Government National Mortgage Association |  | 17,372 |  | 125 |  | 18 |  | 17,479
Total mortgage-backed securities |  | 20,625 |  | 180 |  | 18 |  | 20,787
Total held to maturity securities | $ | 306,255 | $ | 6,301 | $ | 46 | $ | 312,510
|  | Amortized |  | Unrealized |  | Unrealized |  | Fair
|  | Cost |  | Gains |  | Losses |  | Value
December 31, 2014 |  |  |  |  |  |  |  |
Securities available for sale: |  |  |  |  |  |  |  |
U.S. Government agencies and government |  |  |  |  |  |  |  |
sponsored enterprises | $ | 160,334 | $ | 1,116 | $ | 975 | $ | 160,475
Mortgage-backed securities: |  |  |  |  |  |  |  |
Federal National Mortgage Association |  | 184,857 |  | 2,344 |  | 1,264 |  | 185,937
Federal Home Loan Mortgage Corporation |  | 29,478 |  | 799 |  | 7 |  | 30,270
Government National Mortgage Association |  | 48,800 |  | 2,022 |  | - |  | 50,822
Collateralized mortgage obligations: |  |  |  |  |  |  |  |
Federal National Mortgage Association |  | 76,247 |  | 489 |  | 944 |  | 75,792
Federal Home Loan Mortgage Corporation |  | 89,623 |  | 199 |  | 2,585 |  | 87,237
Government National Mortgage Association |  | 29,954 |  | 598 |  | 40 |  | 30,512
Privately issued |  | - |  | 1,218 |  | - |  | 1,218
Total collateralized mortgage obligations |  | 195,824 |  | 2,504 |  | 3,569 |  | 194,759
Total mortgage-backed securities |  | 458,959 |  | 7,669 |  | 4,840 |  | 461,788
Asset-backed securities |  | - |  | 231 |  | - |  | 231
Total available for sale securities | $ | 619,293 | $ | 9,016 | $ | 5,815 | $ | 622,494
Securities held to maturity: |  |  |  |  |  |  |  |
State and political subdivisions |  | 277,273 |  | 4,231 |  | 120 |  | 281,384
Mortgage-backed securities: |  |  |  |  |  |  |  |
Federal National Mortgage Association |  | 3,279 |  | 24 |  | - |  | 3,303
Government National Mortgage Association |  | 13,886 |  | 122 |  | - |  | 14,008
Total mortgage-backed securities |  | 17,165 |  | 146 |  | - |  | 17,311
Total held to maturity securities | $ | 294,438 | $ | 4,377 | $ | 120 | $ | 298,695
Scheduled Maturities Of Securities Available For Sale And Securities Held To Maturity |
|  | Amortized |  | Fair
|  | Cost |  | Value
Debt securities available for sale: |  |  |  |
Due in one year or less | $ | 21 | $ | 22
Due from one to five years |  | 153,578 |  | 154,145
Due after five years through ten years |  | 244,623 |  | 250,793
Due after ten years |  | 232,518 |  | 234,315
| $ | 630,740 | $ | 639,275
Debt securities held to maturity: |  |  |  |
Due in one year or less | $ | 23,341 | $ | 23,408
Due from one to five years |  | 139,825 |  | 142,298
Due after five years through ten years |  | 123,914 |  | 127,467
Due after ten years |  | 19,175 |  | 19,337
| $ | 306,255 | $ | 312,510
Sales And Calls Of Securities Available For Sale |
|  | Three months ended
|  | March 31,
|  | 2015 |  | 2014
Proceeds from sales | $ | 29,508 | $ | 19,470
Gross realized gains |  | 1,073 |  | 313
Gross realized losses |  | 11 |  | -
Investments' Gross Unrealized Losses And Fair Value |
|  | Less than 12 months |  | 12 months or longer |  | Total
|  | Fair |  | Unrealized |  | Fair |  | Unrealized |  | Fair |  | Unrealized
|  | Value |  | Losses |  | Value |  | Losses |  | Value |  | Losses
March 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |
Securities available for sale: |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agencies and government |  |  |  |  |  |  |  |  |  |  |  |
sponsored enterprises | $ | 15,444 | $ | 42 | $ | 25,092 | $ | 262 | $ | 40,536 | $ | 304
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |
Federal National Mortgage Association |  | 23,349 |  | 107 |  | 34,822 |  | 330 |  | 58,171 |  | 437
Federal Home Loan Mortgage Corporation |  | 1,710 |  | 8 |  | - |  | - |  | 1,710 |  | 8
Collateralized mortgage obligations: |  |  |  |  |  |  |  |  |  |  |  |
Federal National Mortgage Association |  | 4,872 |  | 22 |  | 21,119 |  | 561 |  | 25,991 |  | 583
Federal Home Loan Mortgage Corporation |  | 8,535 |  | 13 |  | 65,623 |  | 1,508 |  | 74,158 |  | 1,521
Government National Mortgage Association |  | - |  | - |  | 2,431 |  | 12 |  | 2,431 |  | 12
Total collateralized mortgage obligations |  | 13,407 |  | 35 |  | 89,173 |  | 2,081 |  | 102,580 |  | 2,116
Total mortgage-backed securities |  | 38,466 |  | 150 |  | 123,995 |  | 2,411 |  | 162,461 |  | 2,561
Total available for sale securities |  | 53,910 |  | 192 |  | 149,087 |  | 2,673 |  | 202,997 |  | 2,865
Securities held to maturity: |  |  |  |  |  |  |  |  |  |  |  |
State and political subdivisions |  | 5,484 |  | 28 |  | - |  | - |  | 5,484 |  | 28
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |
Government National Mortgage Association |  | 2,186 |  | 18 |  | - |  | - |  | 2,186 |  | 18
Total held to maturity securities |  | 7,670 |  | 46 |  | - |  | - |  | 7,670 |  | 46
Total temporarily impaired securities | $ | 61,580 | $ | 238 | $ | 149,087 | $ | 2,673 | $ | 210,667 | $ | 2,911
December 31, 2014 |  |  |  |  |  |  |  |  |  |  |  |
Securities available for sale: |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agencies and government |  |  |  |  |  |  |  |  |  |  |  |
sponsored enterprises | $ | 34,995 | $ | 77 | $ | 41,070 | $ | 898 | $ | 76,065 | $ | 975
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |
Federal National Mortgage Association |  | 2,242 |  | 8 |  | 62,592 |  | 1,256 |  | 64,834 |  | 1,264
Federal Home Loan Mortgage Corporation |  | 3,387 |  | 7 |  | - |  | - |  | 3,387 |  | 7
Collateralized mortgage obligations: |  |  |  |  |  |  |  |  |  |  |  |
Federal National Mortgage Association |  | 11,228 |  | 24 |  | 25,644 |  | 920 |  | 36,872 |  | 944
Federal Home Loan Mortgage Corporation |  | - |  | - |  | 76,126 |  | 2,585 |  | 76,126 |  | 2,585
Government National Mortgage Association |  | - |  | - |  | 2,510 |  | 40 |  | 2,510 |  | 40
Total collateralized mortgage obligations |  | 11,228 |  | 24 |  | 104,280 |  | 3,545 |  | 115,508 |  | 3,569
Total mortgage-backed securities |  | 16,857 |  | 39 |  | 166,872 |  | 4,801 |  | 183,729 |  | 4,840
Total available for sale securities |  | 51,852 |  | 116 |  | 207,942 |  | 5,699 |  | 259,794 |  | 5,815
Securities held to maturity: |  |  |  |  |  |  |  |  |  |  |  |
State and political subdivisions |  | 18,036 |  | 120 |  | - |  | - |  | 18,036 |  | 120
Total temporarily impaired securities | $ | 69,888 | $ | 236 | $ | 207,942 | $ | 5,699 | $ | 277,830 | $ | 5,935

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