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v3.22.4

Property and Equipment, Net | 12 Months Ended
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Dec. 31, 2022
Property and Equipment, Net |
Property and Equipment, Net | 5. Property and Equipment, Net Property and equipment consist of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, | ​ | December 31,
(in thousands) |  | 2022 |  | 2021
​ | ​ | ​ | ​ | ​ | ​ | ​
Research equipment | ​ | $ | 17,244 | ​ | $ | 16,482
Leasehold improvements | ​ |  | 9,336 | ​ |  | 8,566
Computer equipment | ​ |  | 908 | ​ |  | 1,143
Furniture and fixtures | ​ |  | 186 | ​ |  | 167
Construction in progress | ​ |  | 853 | ​ |  | 371
Property and equipment, gross | ​ |  | 28,527 | ​ |  | 26,729
Less: accumulated depreciation and amortization | ​ |  | (16,630) | ​ |  | (12,737)
Property and equipment, net | ​ | $ | 11,897 | ​ | $ | 13,992
​ Construction in progress at December 31, 2022 and 2021 consists of the costs incurred for research equipment and for the build-out of additional lab and office space. Depreciation and amortization expense was $4.1 million and $4.3 million for the years ended December 31, 2022 and 2021, respectively.

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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://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=126982197&loc=d3e99893-112916 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI https://asc.fasb.org/topic&trid=2155823 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126982197&loc=SL120174063-112916 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 1 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=126982197&loc=d3e99779-112916 + Details
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