Property and Equipment, Net

3 Months Ended

Mar. 31, 2023

Property, Plant and Equipment [Abstract]

4. Property and Equipment, Net

Property and equipment, net consisted of the following (in thousands):


	March 31, 2023			December 31, 2022
Laboratory equipment	$	630		$	679
Software and computer equipment		407			407
Machinery and equipment		450			450
Furniture and fixtures		83			83
Vehicles		306			306
Leasehold improvements		1,590			1,590
Property and equipment, gross		3,466			3,515
Less: accumulated depreciation and amortization		(2,844	)		(2,811	)
Property and equipment, net	$	622		$	704

Depreciation expense was $71,000 and $149,000 for the three months ended March 31, 2023 and 2022, respectively.

As of March 31, 2023 and December 31, 2022, there was $10,000 of construction in progress included in property and equipment that had not been placed into service and was not subject to depreciation.

Property and equipment are considered assets held for sale when management approves and commits to a plan to dispose of a property or group of properties. The property and equipment held for sale prior to the sale date is separately presented, within current assets, on the condensed consolidated balance sheet as assets held for sale.

During the three months ended March 31, 2023 and 2022, management sold property and equipment and realized a gain on sale of $19,000 and $328,000, respectively, recorded on the condensed consolidated statements of operations and comprehensive loss, with proceeds of $30,000 and $787,000, respectively. The property and equipment sold during the three months ended March 31, 2022 was related to Archipelago and was sold through a local auction.

Property and equipment related to Archipelago, in the amount of $87,000, have been classified as assets held for sale, and are recorded at fair value as of March 31, 2023 and December 31, 2022. The fair value has been estimated using publicly available prices for some of the assets, and business partners' estimates for assets with prices not readily available, due to the relatively small size of the industry in which they can be used.