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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 (in thousands):
| December 31,
| 2023 |  | 2022
Furniture and fixtures | $ | 1,384 |  |  | $ | 1,308 |
Office equipment | 719 |  |  | 633 |
Software | 1,252 |  |  | 1,501 |
Laboratory equipment | 5,559 |  |  | 4,588 |
Leasehold improvements | 10,206 |  |  | 10,137 |
Total property and equipment | $ | 19,120 |  |  | $ | 18,167 |
Less accumulated depreciation and amortization | (11,210) |  |  | (9,550) |
Property and equipment, net | $ | 7,910 |  |  | $ | 8,617 |
Depreciation expense for the years ended December 31, 2023, 2022, and 2021 was $1,655, $1,437, and $777, respectively. The Company recorded an impairment loss of $1,548 and contract termination fees of $440 related to the discontinuation of the Birmingham research facilities expansion, which has been recognized in research and development expenses during the year ended December 31, 2023. The Company did not record any impairment losses during the years ended December 31, 2022 and 2021.

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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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