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Property and Equipment | 12 Months Ended
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Dec. 31, 2023
Property, Plant and Equipment [Abstract] |
Property and Equipment | Property and Equipment Property and equipment consisted of the following:
| December 31, 2023 |  | December 31, 2022
Laboratory equipment | $ | 22 |  |  | $ | 505 |
Furniture and fixtures, office equipment and software | 896 |  |  | 889 |
Leasehold improvements | 328 |  |  | 809 |
Property and equipment, gross | 1,246 |  |  | 2,203 |
Less: accumulated depreciation | 1,042 |  |  | 1,297 |
Property and equipment, net | $ | 204 |  |  | $ | 906 |
Depreciation expense for the years ended December 31, 2023 and 2022 was $198 and $349, respectively. The Company recognized a fixed asset impairment charge of $474 for the year ended December 31, 2023. There were no impairment charges related to fixed assets for the year ended December 31, 2022.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//360/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 6 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-7 + Details
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