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Incentive and Restricted Stock Plan and Dividend Reinvestment Plan (Tables) | 12 Months Ended
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Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Summary of Non-Vested Restricted Stock | The following table provides information about restricted stock granted under the 2014 Stock Plan for the years ended December 31:
| Restricted Stock |  |  | Weighted Average Grant Date Fair Value |
Non-vested at December 31, 2015 | 150,356 |  |  | $ | 26.34 |
Granted | 110,643 |  |  | 25.58 |
Vested | 32,164 |  |  | 25.03 |
Forfeited | 3,335 |  |  | 26.04 |
Non-vested at December 31, 2016 | 225,500 |  |  | $ | 26.16 |
Granted | 90,115 |  |  | 35.19 |
Vested | 83,958 |  |  | 24.82 |
Forfeited | 11,089 |  |  | 29.56 |
Non-vested at December 31, 2017 | 220,568 |  |  | $ | 30.19 |

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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=96867065&loc=d3e5070-113901 + Details
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