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Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of Share-based Compensation, Restricted Stock Units Award Activity | A summary of the Company's restricted stock unit activity as of September 30, 2017 is as follows:
| Restricted Stock Units |  | Share Price at Grant Date
Outstanding at December 31, 2016 | 1,646,523 |  |  | (a)
Restricted stock units granted in 2017 | 35,829 |  |  | $3.14
Restricted stock units granted in 2017 | 1,964,442 |  |  | 3.29
Restricted stock units vested, granted in 2015 | (25,498 | ) |  | 4.00
Restricted stock units vested, granted in 2016 | (191,009 | ) |  | 3.14
Restricted stock units vested, granted in 2017 | (11,824 | ) |  | 3.14
Restricted stock units vested, granted in 2017 | (87,677 | ) |  | 3.29
Restricted stock units forfeited, granted in 2015 | (10,643 | ) |  | 4.00
Restricted stock units forfeited, granted in 2016 | (67,694 | ) |  | 3.14
Restricted stock units forfeited, granted in 2017 | (7,929 | ) |  | 3.29
Outstanding at September 30, 2017 | 3,244,520 |  |  | (a)
(a) | The weighted average grant date price per share of common stock underlying the unvested restricted stock units based on total outstanding restricted stock units as of September 30, 2017 and December 31, 2016 was $3.29.

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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + 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)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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