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v3.20.4

Property and Equipment, Net | 12 Months Ended
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Dec. 31, 2020
Property and Equipment, Net |
Property and Equipment, Net | 5. Property and Equipment, Net At December 31, 2020 and 2019, property and equipment consists of the following (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, |  | December 31,
​ |  | 2020 | ​ | 2019
Laboratory equipment | ​ | $ | 5,359 | ​ | $ | 5,432
Leasehold improvements | ​ |  | 1,579 | ​ |  | 1,580
Computer equipment & software | ​ | ​ | 461 | ​ | ​ | 423
Furniture & fixtures | ​ |  | 224 | ​ |  | 219
Machinery & equipment | ​ |  | 75 | ​ |  | 75
Construction in progress | ​ | ​ | 5,282 | ​ | ​ | —
​ | ​ |  | 12,980 | ​ |  | 7,729
Less: Accumulated depreciation and amortization | ​ |  | (4,859) | ​ |  | (3,558)
​ | ​ | $ | 8,121 | ​ | $ | 4,171
​ Depreciation and amortization expense was $1.5 million and $1.3 million for the years ended December 31, 2020 and 2019, 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 http://asc.fasb.org/extlink&oid=120429125&loc=d3e99893-112916 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://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 http://asc.fasb.org/extlink&oid=120429125&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 http://asc.fasb.org/extlink&oid=120429125&loc=d3e99779-112916 + Details
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