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Stock-Based Compensation | 3 Months Ended
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Mar. 31, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Stock-Based Compensation | Stock-Based Compensation 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.
As of March 31, 2019, there was $3,626 of total unrecognized compensation expense related to unvested stock-based compensation arrangements that vest through December 2019 and 2020, as applicable. The Company recognized stock-based compensation expense of $845 and $868 for the three months ended March 31, 2019 and 2018, respectively. Stock-based compensation expense is recognized on a straight-line basis over the vesting period and forfeitures of stock-based awards are recognized as they occur.

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- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -URI http://asc.fasb.org/subtopic&trid=2208855 + Details
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