Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Property, Plant and Equipment, Net

Note 7 - Property, Plant and Equipment, Net

3 Months Ended

Mar. 31, 2023

Property, Plant and Equipment Disclosure [Text Block]

7. Property, plant and equipment, net

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

	Useful Life
Asset Class	(Years)		March 31, 2023			December 31, 2022

Operational equipment		3 - 10	$	1,336		$	1,445
Lab equipment		5		730			730
Computer equipment		3		6			6
Office furniture and equipment		3		90			90
Leasehold improvements		2.5		80			80
Land		-		1,141			—
Building		39		3,131			—
Equipment under construction				6,778			6,486
				13,292			8,837
Less: accumulated depreciation				(1,398	)		(1,494	)

Total property, plant and equipment, net			$	11,894		$	7,343

Property, plant and equipment depreciation expense was $0.1 million and $0.1 million for the three months ended March 31, 2023 and three months ended March 31, 2022, respectively. Equipment under construction is comprised of various components being manufactured or installed by the Company.