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Stock Based Compensation (Details 1) - Employee Stock Option [Member] - $ / shares | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Shares - Non-vested (in shares) | 12,775 | 11,100
Shares - Granted (in shares) | 7,250 | 4,175
Shares - Vested (in shares) | (300) | (2,500)
Shares - Forfeited (in shares) | 0 | 0
Shares - Non-vested (in shares) | 19,725 | 12,775
Weighted-Average Grant Date Fair Value - Non-vested (in dollars per share) | $ 23.63 | $ 21.54
Weighted-Average Grant Date Fair Value - Granted (in dollars per share) | 27.50 | 26.32
Weighted-Average Grant Date Fair Value - Vested (in dollars per share) | 16.75 | 18.86
Weighted-Average Grant Date Fair Value - Forfeited (in dollars per share) | 0 | 0
Weighted-Average Grant Date Fair Value - Non-vested (in dollars per share) | $ 25.15 | $ 23.63

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + 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 (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of non-vested options outstanding. + References No definition available. + Details
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- Definition Number of non-vested options forfeited. + References No definition available. + Details
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- Definition Weighted average grant-date fair value of non-vested options forfeited. + References No definition available. + Details
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- Definition Number of options vested. + References No definition available. + Details
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- Definition Weighted average grant-date fair value of options vested. + References No definition available. + Details
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