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

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

Schedule of property, plant and equipment

	December 31,
	2016			2015
Land	$	1,747		$	1,807
Buildings and improvements		16,428			16,387
Machinery and equipment		23,122			22,907
Vehicles		848			1,298
Office equipment		709			709
Construction in process		1,873			311
		44,727			43,419
Less accumulated depreciation		(22,895	)		(22,044	)
Total property, plant and equipment, net	$	21,832		$	21,375