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Stock Based Compensation (Tables) | 3 Months Ended
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Mar. 31, 2018
Restricted Stock |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule of Nonvested Restricted Stock Activity | A summary of the activity of the Company's non-vested restricted stock collectively under the 2010 and 2017 Plans for the three months ended March 31, 2018 and 2017, respectively, is presented below:
| 2018 |  | 2017
| 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 | 422,928 |  |  | $ | 6.36 |  |  | 319,058 |  |  | $ | 6.40 |
Granted | 206,597 |  |  | 5.57 |  |  | 326,663 |  |  | 6.54 |
Vested | (164,645 | ) |  | 6.72 |  |  | (116,875 | ) |  | 7.04 |
Non-vested shares as of March 31 | 464,880 |  |  | 5.88 |  |  | 528,846 |  |  | 6.34 |
Weighted-average of restricted stock granted during the period | 206,597 |  |  | $ | 5.57 |  |  | 326,663 |  |  | $ | 6.54 |
(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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