4. PROPERTY, PLANT AND EQUIPMENT (Tables)

12 Months Ended

Dec. 31, 2020

Property, Plant and Equipment [Abstract]

Net Property, plant and equipment

Property, plant and equipment consisted of the following:

							Range of
	December 31, 2020			December 31, 2019			Asset Lives
Buildings and improvements	$	285		$	285		7 - 36 years
Leasehold improvements		906			896		2 - 5 years
Equipment		12,343			17,887		2 - 30 years
Furniture, computers and office equipment		907			901		2 - 8 years
Construction in progress		84			64		–
Total property, plant and equipment		14,525			20,033
Less: Accumulated depreciation		(11,921	)		(12,069	)
Property, plant and equipment, net	$	2,604		$	7,964