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Share-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2022
Share-based Payment Arrangement, Noncash Expense [Abstract] |
Schedule Share-based Compensation Expense | The following table summarizes the components of share-based compensation expense for the three and nine months ended September 30, 2022 and 2021 (in thousands):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2022 |  | 2021 |  | 2022 |  | 2021
Research and development | $ | 271 |  |  | $ | 523 |  |  | $ | 631 |  |  | $ | 643 |
General and administrative | 769 |  |  | 250 |  |  | 1,537 |  |  | 996 |
Total share-based compensation expense | $ | 1,040 |  |  | $ | 773 |  |  | $ | 2,168 |  |  | $ | 1,639 |
Schedule of Total Compensation Cost Related to Nonvested Awards | Total compensation cost related to non-vested awards not yet recognized and the weighted-average periods over which the awards were expected to be recognized at September 30, 2022 were as follows (in thousands):
| Stock Options |  | Restricted Stock Units |  | Restricted Stock
Unrecognized compensation cost | $ | 1,577 |  |  | $ | 168 |  |  | $ | 722 |
Expected weighted-average period in years of compensation cost to be recognized | 1.66 |  | 2.16 |  | 1.83
Schedule of Fair Value of Share-based Compensation Awards | Total fair value of shares vested and the weighted average estimated fair values of shares granted for the nine months ended September 30, 2022 and 2021 were as follows (in thousands):
| Stock Options |  |
| Nine Months Ended September 30, |  |
| 2022 |  | 2021 |  |  |  |
Total fair value of shares vested | $ | 853 |  |  | $ | 757 |  |  |  |  |
Weighted average estimated fair value of shares granted | $ | 1.23 |  |  | $ | 13.59 |  |  |  |  |

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + 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 (h)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 + 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 http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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