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v3.23.1

Property, Plant, and Equipment | 3 Months Ended
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Mar. 31, 2023
Property, Plant and Equipment |
Property, Plant and Equipment | 3. Property, Plant, and Equipment Property, plant and equipment consisted of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | March 31, |  | December 31,
​ | ​ | 2023 | ​ | 2022
Lab and build-to-suit equipment | ​ | $ | 6,344 | ​ | $ | 6,257
Office equipment | ​ |  | 19 | ​ |  | 19
Furniture and fixtures | ​ |  | 134 | ​ |  | 134
Computer equipment | ​ |  | 400 | ​ |  | 291
Leasehold improvements | ​ |  | 11,409 | ​ |  | 11,409
Construction-in-progress | ​ |  | 447 | ​ |  | 155
Total property, plant and equipment | ​ |  | 18,753 | ​ |  | 18,265
Accumulated depreciation and amortization | ​ |  | (14,407) | ​ |  | (14,114)
Property, plant and equipment, net | ​ | $ | 4,346 | ​ | $ | 4,151
​ We recorded depreciation and amortization expense related to property, plant and equipment of $0.3 million and $0.4 million for the three months ended March 31, 2023 and 2022, 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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