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Property and Equipment | 12 Months Ended
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Dec. 31, 2023
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,
| 2023 |  | 2022
Equipment (useful life 3 - 15 years) | $ | 1,061 |  |  | $ | 1,061 |
Tooling (useful life 2 - 5 years) | 190 |  |  | 190 |
Vehicles (useful life 5 years) | 41 |  |  | — |
Leasehold improvements (the shorter of useful life or lease life) | 141 |  |  | 141 |
Construction in progress | 28 |  |  | — |
Property and equipment at cost | 1,461 |  |  | 1,392 |
Less: accumulated depreciation | (1,349) |  |  | (1,316) |
Property and equipment, net | $ | 112 |  |  | $ | 76 |
Depreciation expense was $33 thousand and $159 thousand for the years ended December 31, 2023 and 2022, respectively. During the third quarter of 2022 it was determined that the 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 of 2022, impairment charges totaling $262 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 $338 thousand on the impairment of fixed assets. No such loss was recorded during the year ended December 31, 2023.

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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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