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Property and Equipment | 12 Months Ended
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Dec. 31, 2022
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):
| At December 31,
| 2022 |  | 2021
Equipment (useful life 3 - 15 years) | $ | 1,061 |  |  | $ | 1,308 |
Tooling (useful life 2 - 5 years) | 190 |  |  | 384 |
Vehicles (useful life 5 years) | — |  |  | 83 |
Furniture and fixtures (useful life 5 years) | — |  |  | 86 |
Computer software (useful life 3 years) | — |  |  | 1,194 |
Leasehold improvements (the shorter of useful life or lease life) | 141 |  |  | 169 |
Finance lease right-of-use asset | — |  |  | 13 |
UV - Robots (useful life 5 years) | — |  |  | 105 |
Construction in progress | — |  |  | 135 |
Property and equipment at cost | 1,392 |  |  | 3,477 |
Less: accumulated depreciation | (1,316) |  |  | (2,802) |
Property and equipment, net | $ | 76 |  |  | $ | 675 |
Depreciation expense was $0.2 million for both of the years ended December 31, 2022 and 2021. During the third quarter of 2022 it was determined that the mUVeTM ultraviolet-C light disinfection robots were no longer of use and the net book value of $76 thousand was recorded as a loss on impairment of fixed assets. During the fourth quarter, impairment charges totaling $258 thousand were recorded, which primarily relates to other assets disposed or otherwise abandoned following a review by management. Impairment charges were based on level 3 inputs, including estimated residual or sale value to market participants, in determining fair value. As impaired assets relate primarily to the Company and/or its discontinued products, management determined fair value was insignificant. For the year ended December 31, 2022, the Company recognized a loss of $334 thousand on the impairment of fixed assets. No such loss was recorded during the year ended December 31, 2021.

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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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