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Property And Equipment, Net | 6 Months Ended
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Jun. 30, 2021
Property Plant And Equipment [Abstract] |
Property and Equipment, Net | 3. PROPERTY AND EQUIPMENT, NET Property and equipment, net consist of the following (in thousands):
|  | June 30, 2021 |  |  | December 31, 2020 |
Machinery and equipment |  | $ | 443 |  |  | $ | 443 |
Less accumulated depreciation |  |  | (301 | ) |  |  | (257 | )
Property and equipment, net |  | $ | 142 |  |  | $ | 186 |
Depreciation expense was $22,000 for the three months ended June 30, 2021 and 2020 and was $44,000 for the six months ended June 30, 2021 and 2020.

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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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