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Nature of Banking Activities and Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Loans and Leases Receivable, Troubled Debt Restructuring Policy [Policy Text Block] | Troubled Debt Restructurings (TDR) In situations where, for economic or legal reasons related to a borrower’s financial condition, management may grant a concession to the borrower that it would not otherwise consider, the related loan is classified as a TDR. TDRs are considered impaired loans. Upon designation as a TDR, the Company evaluates the borrower’s payment history, past due status and ability to make payments based on the revised terms of the loan. If a loan was accruing prior to being modified as a TDR and if the Company concludes that the borrower is able to make such payments, and there are no other factors or circumstances that would cause it to conclude otherwise, the loan will remain on an accruing status. If a loan was on non-accrual status at the time of the TDR, the loan will remain on non-accrual status following the modification and may be returned to accrual status based on the policy for returning loans to accrual status as noted above.
Weighted Average Number Of Shares Used In Computing Earnings Per Share | The following table shows the weighted average number of shares used in computing earnings per share and the effect on the weighted average number of shares of dilutive potential common stock.
| 2015 |  | 2014 |  | 2013
Weighted average number of common shares outstanding used to calculate basic earnings per share | 3,495,334 |  |  | 3,438,348 |  |  | 3,386,467 |
Effect of dilutive common stock | — |  |  | 298 |  |  | 745 |
Weighted average number of common shares outstanding used to calculate diluted earnings per share | 3,495,334 |  |  | 3,438,646 |  |  | 3,387,212 |
Components Of Change In Unrealized Gains (Losses) On Securities | The components of the change in unrealized gains (losses) on securities during 2015, 2014, and 2013 were as follows:
|  | 2015 |  | 2014 |  | 2013
Gross unrealized gain (loss) |  | $ | (564 | ) |  | $ | 2,382 |  |  | $ | (4,497 | )
Reclassification adjustment for realized (gain) |  | (124 | ) |  | (990 | ) |  | (465 | )
Net unrealized gain (loss) before taxes |  | (688 | ) |  | 1,392 |  |  | (4,962 | )
Tax effect |  | 234 |  |  | (473 | ) |  | 1,687 |
|  | $ | (454 | ) |  | $ | 919 |  |  | $ | (3,275 | )
Components Of Accumulated Other Comprehensive Income, Net Of Deferred Taxes | The components of accumulated other comprehensive income, net of deferred taxes, were as follows:
|  | Unrealized Gain (Loss) on Securities |  | Change in Fair Value of Interest Rate Swap |  | Post Retirement Benefit Plan |  | Total
December 31, 2013 |  | $ | 547 |  |  | $ | (286 | ) |  | $ | 44 |  |  | $ | 305 |
2014 Change |  | 919 |  |  | 96 |  |  | (5 | ) |  | 1,010 |
December 31, 2014 |  | 1,466 |  |  | (190 | ) |  | 39 |  |  | 1,315 |
2015 Change |  | (454 | ) |  | 190 |  |  | — |  |  | (264 | )
December 31, 2015 |  | $ | 1,012 |  |  | $ | — |  |  | $ | 39 |  |  | $ | 1,051 |
Changes to accumulated other comprehensive income by components are shown in the following tables for the years ended December 31, 2015, 2014, and 2013:
| Twelve Months Ended
| December 31,
| 2015 | 2014 | 2013
| Unrealized Gains and Losses on Available for Sale Securities | Change in Fair Value of Interest Rate Swap | Change in Benefit Obligations and Plan Assets for the Post Retirement Benefit Plan | Total | Unrealized Gains and Losses on Available for Sale Securities | Change in Fair Value of Interest Rate Swap | Change in Benefit Obligations and Plan Assets for the Post Retirement Benefit Plan | Total | Unrealized Gains and Losses on Available for Sale Securities | Change in Fair Value of Interest Rate Swap | Change in Benefit Obligations and Plan Assets for the Post Retirement Benefit Plan | Total
| (dollars in thousands)
January 1 | $ | 1,466 |  | $ | (190 | ) | $ | 39 |  | $ | 1,315 |  | $ | 547 |  | $ | (286 | ) | $ | 44 |  | $ | 305 |  | $ | 3,822 |  | $ | (418 | ) | $ | 44 |  | $ | 3,448 |
Other comprehensive (loss) income before reclassifications | (564 | ) | 52 |  | — |  | (512 | ) | 2,382 |  | 145 |  | (8 | ) | 2,519 |  | (4,497 | ) | 201 |  | — |  | (4,296 | )
Reclassifications from other comprehensive (loss) income | (124 | ) | 237 |  | — |  | 113 |  | (990 | ) | — |  | — |  | (990 | ) | (465 | ) | — |  | — |  | (465 | )
Tax effect of current period changes | 234 |  | (99 | ) | — |  | 135 |  | (473 | ) | (49 | ) | 3 |  | (519 | ) | 1,687 |  | (69 | ) | — |  | 1,618 |
Current period changes net of taxes | (454 | ) | 190 |  | — |  | (264 | ) | 919 |  | 96 |  | (5 | ) | 1,010 |  | (3,275 | ) | 132 |  | — |  | (3,143 | )
December 31 | $ | 1,012 |  | $ | — |  | $ | 39 |  | $ | 1,051 |  | $ | 1,466 |  | $ | (190 | ) | $ | 39 |  | $ | 1,315 |  | $ | 547 |  | $ | (286 | ) | $ | 44 |  | $ | 305 |

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- Definition Disclosure of the accounting policy for loan agreements whose terms have been modified because of the inability of the borrower for financial reasons to comply with the terms of the original loan agreement. A creditor discloses material facts pertaining to significant modifications. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18794-111554 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=51655414&loc=d3e18780-107790 + Details
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