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Property and Equipment | 9 Months Ended
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Sep. 30, 2020
Property, Plant and Equipment [Abstract] |
Property and Equipment | PROPERTY AND EQUIPMENT Property and equipment are stated at cost and depreciated using the straight-line method over the estimated useful lives of the related assets and consist of the following (in thousands):
| September 30, 2020 |  | December 31, 2019
Equipment (useful life 3 to 15 years) | $ | 1,353 |  |  | $ | 1,297 |
Tooling (useful life 2 to 5 years) | 226 |  |  | 203 |
Vehicles (useful life 5 years) | 47 |  |  | 47 |
Furniture and fixtures (useful life 5 years) | 137 |  |  | 137 |
Computer software (useful life 3 years) | 1,062 |  |  | 1,028 |
Leasehold improvements (the shorter of useful life or lease life) | 210 |  |  | 211 |
Finance lease right-of-use asset | 13 |  |  | 13 |
Projects in progress | 107 |  |  | 48 |
Property and equipment at cost | 3,155 |  |  | 2,984 |
Less: accumulated depreciation | (2,735) |  |  | (2,595) |
Property and equipment, net | $ | 420 |  |  | $ | 389 |
Depreciation expense was $48 thousand and $77 thousand for the three months ended September 30, 2020 and 2019, respectively. For the nine months ended September 30, 2020 and 2019, depreciation expense was $140 thousand and $277 thousand, 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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