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Compensation Plans (Tables) | 12 Months Ended
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Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of Stock Option Activity | The following table summarizes the stock option activity of the 2007 SIP:
|  | Shares |  |  | Weighted Average Exercise Price |  |  | Weighted Average Grant Date Fair Value |  |  | Weighted Average Remaining Contractual Life (Years) |
Outstanding at December 31, 2014 |  |  | 40,977 |  |  |  | 8.82 |  |  |  | 6.29 |  |  |  | 4.1 |
Granted |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Exercised |  |  | (29,139 | ) |  |  | 8.77 |  |  |  | 6.13 |  |  |  | 3.1 |
Canceled |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Outstanding at December 31, 2015 |  |  | 11,838 |  |  |  | 8.95 |  |  |  | 6.69 |  |  |  | 3.3 |
Granted |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Exercised |  |  | — |  |  |  | — |  |  |  | — |  |  |  |  |
Canceled |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Outstanding at December 31, 2016 |  |  | 11,838 |  |  |  | 8.95 |  |  |  | 6.69 |  |  |  | 2.3 |
Granted |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Exercised |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Canceled |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Outstanding at December 31, 2017 |  |  | 11,838 |  |  |  | 8.95 |  |  |  | 6.69 |  |  |  | 1.3 |
Exercisable Options Outstanding at December 31, 2017 |  |  | 11,838 |  |  |  | 8.95 |  |  |  | 6.69 |  |  |  | 1.3 |
Non-Vested Options Outstanding at December 31, 2017 |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + 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) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 3: 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=96867065&loc=d3e5070-113901 + Details
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