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Property and Equipment, Net | 6 Months Ended
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Jun. 30, 2023
Property, Plant and Equipment [Abstract] |
Property and Equipment, Net | 4. Property and Equipment, Net Property and equipment, net consisted of the following (in thousands):
|  | June 30, 2023 |  |  | December 31, 2022 |
Laboratory equipment |  | $ | 516 |  |  | $ | 679 |
Software and computer equipment |  |  | 412 |  |  |  | 407 |
Machinery and equipment |  |  | 450 |  |  |  | 450 |
Furniture and fixtures |  |  | 83 |  |  |  | 83 |
Vehicles |  |  | 306 |  |  |  | 306 |
Leasehold improvements |  |  | 1,590 |  |  |  | 1,590 |
Property and equipment, gross |  |  | 3,357 |  |  |  | 3,515 |
Less: accumulated depreciation and amortization |  |  | (2,797 | ) |  |  | (2,811 | )
Property and equipment, net |  | $ | 560 |  |  | $ | 704 |
Depreciation expense was $67,000 and $138,000 for the three and six months ended June 30, 2023, respectively. Depreciation expense was $128,000 and $277,000 for the three and six months ended June 30, 2022, respectively. As of December 31, 2022, there was $10,000 of construction in progress included in property and equipment that had not been placed into service and was not subject to depreciation. As of June 30, 2023, there was no construction in progress included in property and equipment. Property and equipment are considered assets held for sale when management approves and commits to a plan to dispose of a property or group of properties. The property and equipment held for sale prior to the sale date is separately presented, within current assets, on the condensed consolidated balance sheet as assets held for sale. During the three and six months ended June 30, 2023 management sold property and equipment and realized a gain on sale of $7,000 and $26,000, respectively, recorded on the c ondensed consolidated statements of operations and comprehensive income (loss), with proceeds of $7,000 and $37,000, respectively. During the three and six months ended June 30, 2022, management initiated the sale of property and equipment related to the Davis laboratory and Archipelago, respectively. The Company completed the sale of a portion of such property and equipment with a gain on sale of property and equipment in the amount of $58,000 and $386,000 recorded on the condensed consolidated statements of operations and comprehensive income (loss) during the three and six months ended June 30, 2022, respectively. The proceeds related to the sale of property and equipment during the three and six months ended June 30, 2022 are $54,000 and $841,000, respectively. Property and equipment related to Archipelago, in the amount of $87,000, have been classified as assets held for sale, and are recorded at fair value as of June 30, 2023 and December 31, 2022. The fair value has been estimated using publicly available prices for some of the assets, and business partners' estimates for assets with prices not readily available, due to the relatively small size of the industry in which they can be used.

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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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