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Stock Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2017
Restricted Stock |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule of Nonvested Share Activity | A summary of the activity of the Company's non-vested restricted stock collectively under the 2010 and 2017 Plans for the years ended December 31, 2017, 2016 and 2015, respectively, is presented below:
| 2017 |  | 2016 |  | 2015
| Number of Non-vested Restricted Shares |  | Weighted Average Per Share Grant Date Fair Value(1) |  | Number of Non-vested Restricted Shares |  | Weighted Average Per Share Grant Date Fair Value(1) |  | Number of Non-vested Restricted Shares |  | Weighted Average Per Share Grant Date Fair Value(1)
Non-vested shares at January 1 | 319,058 |  |  | $ | 6.40 |  |  | 280,457 |  |  | $ | 7.63 |  |  | 162,171 |  |  | $ | 7.26 |
Granted | 332,921 |  |  | 6.54 |  |  | 160,453 |  |  | 5.11 |  |  | 185,650 |  |  | 7.79 |
Vested | (229,051 | ) |  | 6.67 |  |  | (121,852 | ) |  | 7.54 |  |  | (67,364 | ) |  | 7.18 |
Non-vested shares as of December 31 | 422,928 |  |  | $ | 6.36 |  |  | 319,058 |  |  | $ | 6.40 |  |  | 280,457 |  |  | $ | 7.63 |
Weighted-average restricted stock granted during the period | 332,921 |  |  | $ | 6.54 |  |  | 160,453 |  |  | $ | 5.11 |  |  | 185,650 |  |  | $ | 7.79 |
(1) | The grant date fair value of restricted stock awards is based on the closing market price of the Company’s common stock at the grant date.

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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=96867065&loc=d3e5070-113901 + Details
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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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