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Securities Available For Sale (Tables) | 12 Months Ended
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Dec. 31, 2016
Securities Available For Sale [Abstract] |
Summary Of Securities Available For Sale |
December 31, 2016 |  |  |  | Gross |  | Gross |  |
|  | Amortized |  | Unrealized |  | Unrealized |  | Estimated
Available for Sale: |  | Cost |  | Gains |  | Losses |  | Fair Value
Mortgage-backed securities: |  |  |  |  |  |  |  |
US Government-sponsored enterprises | $ | 330,635 | $ | 2,682 | $ | 4,865 | $ | 328,452
US Government agency |  | 76,722 |  | 797 |  | 613 |  | 76,906
Private label |  | 936 |  | 207 |  | 11 |  | 1,132
Obligations of states |  |  |  |  |  |  |  |
and political subdivisions thereof |  | 123,832 |  | 1,941 |  | 3,407 |  | 122,366
Total | $ | 532,125 | $ | 5,627 | $ | 8,896 | $ | 528,856
December 31, 2015 |  |  |  | Gross |  | Gross |  |
|  | Amortized |  | Unrealized |  | Unrealized |  | Estimated
Available for Sale: |  | Cost |  | Gains |  | Losses |  | Fair Value
Mortgage-backed securities: |  |  |  |  |  |  |  |
US Government-sponsored enterprises | $ | 304,106 | $ | 5,042 | $ | 2,155 | $ | 306,993
US Government agency |  | 78,408 |  | 1,269 |  | 547 |  | 79,130
Private label |  | 2,713 |  | 762 |  | 11 |  | 3,464
Obligations of states |  |  |  |  |  |  |  |
and political subdivisions thereof |  | 110,952 |  | 4,758 |  | 328 |  | 115,382
Total | $ | 496,179 | $ | 11,831 | $ | 3,041 | $ | 504,969
Schedule Of OTTI Related To Historical Estimated Credit Losses On Debt Securities And Changes In Estimated Credit Losses Recognized In Pre-Tax Earnings |
|  | 2016 |  | 2015 |  | 2014
Estimated credit losses as of prior year-end, | $ | 3,180 | $ | 3,413 | $ | 3,923
Additions for credit losses for securities on which |  |  |  |  |  |
OTTI has been previously recognized |  | -- |  | -- |  | --
Additions for credit losses for securities on which |  |  |  |  |  |
OTTI has not been previously recognized |  | -- |  | -- |  | --
Reductions for securities sold or paid off during the period |  | 1,483 |  | 233 |  | 510
Estimated credit losses as of December 31, | $ | 1,697 | $ | 3,180 | $ | 3,413
Summary Of Fair Value Of Securities With Continuous Unrealized Losses |
|  | Less than 12 months |  | 12 months or longer |  | Total
|  | Estimated |  |  |  |  | Estimated |  |  |  |  | Estimated |  |  |
December 31, 2016 |  | Fair | Number of |  | Unrealized |  | Fair | Number of |  | Unrealized |  | Fair | Number of |  | Unrealized
|  | Value | Investments |  | Losses |  | Value | Investments |  | Losses |  | Value | Investments |  | Losses
Description of Securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
US Government- |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
sponsored enterprises | $ | 197,914 | 257 | $ | 4,369 | $ | 10,120 | 23 | $ | 496 | $ | 208,034 | 280 | $ | 4,865
US Government agency |  | 36,941 | 54 |  | 472 |  | 4,263 | 15 |  | 141 |  | 41,204 | 69 |  | 613
Private label |  | 107 | 2 |  | -- |  | 312 | 7 |  | 11 |  | 419 | 9 |  | 11
Obligations of states and |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
political subdivisions thereof |  | 76,803 | 151 |  | 3,252 |  | 3,916 | 9 |  | 155 |  | 80,719 | 160 |  | 3,407
Total | $ | 311,765 | 464 | $ | 8,093 | $ | 18,611 | 54 | $ | 803 | $ | 330,376 | 518 | $ | 8,896
|  | Less than 12 months |  | 12 months or longer |  | Total
|  | Estimated |  |  |  |  | Estimated |  |  |  |  | Estimated |  |  |
December 31, 2015 |  | Fair | Number of |  | Unrealized |  | Fair | Number of |  | Unrealized |  | Fair | Number of |  | Unrealized
|  | Value | Investments |  | Losses |  | Value | Investments |  | Losses |  | Value | Investments |  | Losses
Description of Securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
US Government- |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
sponsored enterprises | $ | 112,770 | 142 | $ | 1,342 | $ | 23,646 | 33 | $ | 813 | $ | 136,416 | 175 | $ | 2,155
US Government agency |  | 20,201 | 30 |  | 326 |  | 11,232 | 22 |  | 221 |  | 31,433 | 52 |  | 547
Private label |  | 235 | 2 |  | 2 |  | 178 | 5 |  | 9 |  | 413 | 7 |  | 11
Obligations of states and |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
political subdivisions thereof |  | 14,853 | 25 |  | 210 |  | 3,700 | 11 |  | 118 |  | 18,553 | 36 |  | 328
Total | $ | 148,059 | 199 | $ | 1,880 | $ | 38,756 | 71 | $ | 1,161 | $ | 186,815 | 270 | $ | 3,041
Summary Of Maturities Distribution Of The Amortized Cost And Estimated Fair Value Of Securities Available For Sale |
|  | Amortized |  | Estimated
Securities Available for Sale |  | Cost |  | Fair Value
Due one year or less | $ | 134 | $ | 134
Due after one year through five years |  | 6,230 |  | 6,283
Due after five years through ten years |  | 17,482 |  | 17,722
Due after ten years |  | 508,279 |  | 504,717
Total | $ | 532,125 | $ | 528,856
Summary Of Realized Gains And Losses And Other-Than-Temporary Impairment Losses On Securities |
|  | Proceeds |  |  |  |  |  |
|  | from Sale of |  |  |  |  |  |
|  | Securities |  |  |  |  |  |
|  | Available |  | Realized |  | Realized |  |
|  | for Sale |  | Gains |  | Losses |  | Net
2016 | $ | 66,583 | $ | 4,498 | $ | -- | $ | 4,498
2015 |  | 22,753 |  | 1,334 |  | -- |  | 1,334
2014 |  | 37,278 |  | 809 |  | 406 |  | 403

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- Definition Tabular disclosure of the amount of other than temporary impairment (OTTI) related to credit losses recognized in earnings including: (a) the beginning balance of the amount related to credit losses on debt securities held by the investor at the beginning of the period for which a portion of an OTTI was recognized in other comprehensive income; (b) additions for the amount related to the credit loss for which an OTTI was not previously recognized; (c) reductions for securities sold during the period (realized); (d) reductions for securities for which the amount previously recognized in other comprehensive income was recognized in earnings because the investor intends to sell the security or more likely than not will be required to sell the security before recovery of its amortized cost basis; (e) additional increases to the amount related to the credit loss for which an OTTI was previously recognized when the investor does not intend to sell the security and it is not more likely than not that the investor will be required to sell the security before recovery of its amortized cost basis; (f) reductions for increases in cash flows expected to be collected that are recognized over the remaining life of the security; and (g) the ending balance of the amount related to credit losses on debt securities held by the entity at the end of the period for which a portion of an OTTI was recognized in other comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27340-111563 + Details
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