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Stock-Based Compensation (Tables) | 3 Months Ended
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Mar. 31, 2019
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 for the three months ended March 31, 2019 is as follows:
| Unvested Restricted Stock Units |  | Weighted Average Grant Date Price Per Share (a)
Outstanding as of January 1, 2019 | 1,548,150 |  |  | $3.18
Shares forfeited | (10,196 | ) |  | $3.19
Outstanding at March 31, 2019 | 1,537,954 |  |  | $3.18
(a) On an annual basis, the Company engages an independent third-party valuation advisory firm to estimate the per share value of the Company's common stock.

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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