Property and Equipment, Net

3 Months Ended

Mar. 31, 2022

Property, Plant and Equipment [Abstract]

4. Property and Equipment, Net

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


	March 31, 2022			December 31, 2021
Laboratory equipment	$	2,226		$	2,659
Software and computer equipment		575			548
Machinery and equipment		868			1,809
Furniture and fixtures		203			211
Vehicles		333			417
Leasehold improvements		2,264			2,306
Property and equipment, gross		6,469			7,950
Less accumulated depreciation and amortization		(5,001	)		(5,659	)
Property and equipment, net	$	1,468		$	2,291

Depreciation expense was $149,000 and $236,000 for the three months ended March 31, 2022 and 2021, respectively.

As of March 31, 2022, and December 31, 2021, respectively, there was $197,000 and $267,000 of construction in progress included in property and equipment that had not been placed into service and was not subject to depreciation.

We consider property and equipment to be 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 first quarter of 2022 management initiated the sale of property and equipment related to Archipelago, located in Hawaii. The Company completed the sale of a portion of such property and equipment with a gain on sale of property and equipment in the amount of $328,000 recorded on the condensed consolidated statements of operations and comprehensive (loss) income, during the first quarter of 2022, with proceeds of $787,000 through a local auction. The Company had no sales of assets held for sale during the first quarter of 2021. Property and equipment related to Archipelago, in the amount of $254,000, have been classified as assets held for sale, and are recorded at fair value as of March 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.