4. PROPERTY, PLANT AND EQUIPMENT (Tables)

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Net Property, plant and equipment

	December 31, 2017			December 31, 2016			Range of Asset Lives
Buildings and improvements	$	285		$	5			7 - 36 years
Leasehold improvements		908			908			2 - 5 years
Equipment		18,933			16,360			2 - 30 years
Furniture, computers and office equipment		1,245			1,274			2 - 8 years
Construction in progress		2,127			586			–
Total property, plant and equipment		23,498			19,133
Less: Accumulated depreciation and amortization		(11,146	)		(11,195	)
Property, plant and equipment, net	$	12,352		$	7,938