4. Property, Plant and Equipment, net (Tables)

9 Months Ended

Sep. 30, 2019

Property, Plant and Equipment [Abstract]

Schedule of property, plant and equipment

Property, plant and equipment consisted of the following:

	September 30, 2019			December 31, 2018
Land	$	1,565		$	1,747
Buildings and improvements		17,119			17,520
Machinery and equipment		29,891			29,692
Vehicles		778			937
Office equipment		851			838
Construction in process		806			546
		51,010			51,280
Less accumulated depreciation		(28,390	)		(26,707	)
Total property, plant and equipment, net	$	22,620		$	24,573