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Stock plans (Tables) | 12 Months Ended
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Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Summary of Stock Option Plan | The Company has a stock plan (“Stock Plan”) covering non-employee directors and the 2008 long-term incentive plan (“2008 Plan”) for certain officers and key employees. The plans are administered by a committee of the Board of Directors. The activity for 25,227 stock appreciation rights (“SAR”) and 5,600 options under the Stock Plan for each of the years in the three-year period ended December 31, 2014, is summarized as follows:
|  | 2014 |  |  | 2013 |  |  | 2012 |
December 31 |  | Awards |  |  | Weighted Average Price |  |  | Awards |  |  | Weighted Average Price |  |  | Awards |  |  | Weighted Average Price |
Outstanding, beginning of year |  |  | 30,827 |  |  | $ | 30.37 |  |  |  | 25,227 |  |  | $ | 29.66 |  |  |  | 25,227 |  |  | $ | 29.66 |
Associated with merger |  |  |  |  |  |  |  |  |  |  | 8,900 |  |  |  | 30.93 |  |  |  |  |  |  |  |  |
Granted |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Settled |  |  | (30,827 | ) |  | $ | 30.37 |  |  |  | (3,150 | ) |  |  | 26.38 |  |  |  |  |  |  |  |  |
Forfeited |  |  |  |  |  |  |  |  |  |  | (150 | ) |  |  | 27.50 |  |  |  |  |  |  |  |  |
Outstanding, end of year |  |  |  |  |  |  |  |  |  |  | 30,827 |  |  |  | 30.37 |  |  |  | 25,227 |  |  |  | 29.66 |
Exercisable, end of year |  |  |  |  |  | $ |  |  |  |  | 30,827 |  |  | $ | 30.37 |  |  |  | 25,227 |  |  | $ | 29.66 |
Schedule of Activity Related to Restricted Stock | The activity related to restricted stock for each of the years ended December 31, 2014, 2013 and 2012 was as follows:
Year Ended December 31, |  | 2014 |  |  | 2013 |  |  | 2012 |
Nonvested, January 1 |  |  | 17,245 |  |  |  | 15,425 |  |  |  | 4,883 |
Granted shares |  |  |  |  |  |  | 1,820 |  |  |  | 10,542 |
Vested shares |  |  | 2,936 |  |  |  |  |  |  |  |  |
Forfeited shares |  |  |  |  |  |  |  |  |  |  |  |
Nonvested, December 31 |  |  | 14,309 |  |  |  | 17,245 |  |  |  | 15,425 |

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + 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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