Property and Equipment

12 Months Ended

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.