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Stock Compensation Plan (Tables) | 12 Months Ended
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Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] | A summary of option activity during 2015 is presented below:
(Dollars in thousands, except per share amounts) |  |  |  |  | Weighted |  | Weighted |  |  |  |
|  |  |  |  | average |  | average |  |  |  |
|  |  |  |  | exercise |  | remaining |  | Aggregate |
|  |  |  |  | price |  | contractual |  | intrinsic |
|  | Shares |  | per share |  | term |  | value |
Outstanding at January 1, 2015 |  |  | 344,474 |  | $ | 16.27 |  |  | 3.1 years |  | $ | 1,690 |
Effect of 5% stock dividend |  |  | 16,288 |  |  |  |  |  |  |  |  |  |
Forfeited/expired |  |  | - |  | $ | - |  |  |  |  |  |  |
Exercised |  |  | (30,543) |  | $ | 16.67 |  |  |  |  |  |  |
Outstanding at December 31, 2015 |  |  | 330,219 |  | $ | 15.43 |  |  | 2.2 years |  | $ | 3,578 |
Exercisable at December 31, 2015 |  |  | 330,219 |  | $ | 15.43 |  |  | 2.2 years |  | $ | 3,578 |
Vested and expected to vest at December 31, 2015 |  |  | 330,219 |  | $ | 15.43 |  |  | 2.2 years |  | $ | 3,578 |
Schedule of Nonvested Share Activity [Table Text Block] | A summary of nonvested option activity during 2015 is presented below:
|  |  |  |  | Weighted |
|  |  |  |  | average |
|  |  |  |  | exercise |
|  |  |  |  | price |
|  | Shares |  | per share |
Nonvested options at January 1, 2015 |  |  | 14,748 |  | $ | 13.37 |
Forfeited/expired |  |  | - |  | $ | - |
Vested |  |  | (14,748) |  | $ | 13.37 |
Effect of 5% stock dividend |  |  | - |  | $ | - |
Nonvested options at December 31, 2015 |  |  | - |  | $ | - |
Schedule Of Stock Option Exercised Additional Information [Table Text Block] | Additional information about stock options exercised is presented below:
(Dollars in thousands) |  | Years ended December 31, |
|  | 2015 |  | 2014 |  | 2013 |
Intrinsic value of options exercised (on exercise date) |  | $ | 273 |  | $ | 186 |  | $ | 126 |
Cash received from options exercised |  |  | 510 |  |  | 493 |  |  | 1,244 |
Excess tax benefit realized from options exercised |  | $ | 83 |  | $ | 26 |  | $ | 29 |

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- Definition Tabular disclosure of the changes in outstanding nonvested shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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