Property, plant and equipment

6 Months Ended

Jun. 30, 2017

Property, Plant and Equipment [Abstract]

Property, plant and equipment

Note 4 - Property, plant and equipment

Elements of property, plant and equipment are as follows:

	June 30,				Estimated
	2017		December 31, 2016		Lives
(in thousands)
Property, plant and equipment
- Land	$	535	$	535
- Buildings		830		830	39 years
- Building improvements		873		873	39 years
- Equipment		15,293		13,423	3-7years
- Equipment under capital lease		226		248	5-7 years
- Vehicles		1,337		1,360	5 years
- Lab and computer equipment, software		2,747		2,652	3-5 years
- Furniture & fixtures		288		289	7-8 years
- Leasehold improvements		119		119	3 years
- Equipment under construction		351		1,654
Subtotal		22,599		21,983
Accumulated depreciation		15,396		14,451
Total	$	7,203	$	7,532

Depreciation expense for the six months ended June 30, 2017 and 2016 was $0.9 million and $0.9 million, respectively.