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Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2022
Share-Based Payment Arrangement [Abstract] |
Schedule of significant assumptions | The significant assumptions used in the Monte Carlo simulation are presented in the following table.
|  | Year ended December 31,
|  | 2022
Expected volatility |  | 90.3 | %
Expected life (years) |  | 3.0
Risk-free interest rate |  | 2.81 | %
Unrecognized compensation expense is expected to be recognized | At December 31, 2022, the Company had unrecognized compensation expense of $6,278 related to granted but unvested stock awards. That expense is expected to be recognized as follows:
Year Ended December 31, |
2023 | $ | 2,858 |
2024 | 2,022 |
2025 | 1,116 |
2026 | 282 |
2027 | — |
| $ | 6,278 |
Summary of restricted stock activity | The following table summarizes restricted stock activity under the 2016 Plan from January 1, 2021 through December 31, 2022:
| Number of Shares |  | Weighted Average
Unvested, January 1, 2021 | 1,886 |  |  | $ | 5.14 |
Granted | 2,013 |  |  | $ | 2.88 |
Vested | (548) |  |  | $ | 7.11 |
Forfeiture | (200) |  |  | $ | 5.71 |
Unvested, December 31, 2021 | 3,151 |  |  | $ | 3.06 |
Granted | 1,172 |  |  | $ | 3.30 |
Vested | (975) |  |  | $ | 3.54 |
Forfeiture | (618) |  |  | $ | 2.69 |
Unvested December 31, 2022 | 2,730 |  |  | $ | 3.06 |

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock shares. + 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) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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 (f)(2) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of cost not yet recognized and weighted-average period over which cost is expected to be recognized for nonvested award under share-based payment arrangement. + 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 (i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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