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Property, plant and equipment
12 Months Ended
Dec. 31, 2013
Property, Plant and Equipment [Abstract]  
Property, plant, and equipment
Note 6 - Property, plant and equipment
 
Elements of property, plant and equipment are as follows:
 
December 31,
 
2013
 
2012
 
 
Estimated Lives
 
(in thousands)
 
 
 
 
 
 
 
 
 
 
Property, plant and equipment
 
 
 
 
 
 
 
 
 
 
- Land
 
$
535
 
$
535
 
 
 
 
- Buildings
 
 
830
 
 
830
 
 
39 years
 
- Building improvements
 
 
776
 
 
770
 
 
39 years
 
- Equipment
 
 
8,560
 
 
8,253
 
 
3-7 years
 
- Equipment under capital lease
 
 
137
 
 
231
 
 
5-7 years
 
- Vehicles
 
 
1,258
 
 
1,212
 
 
5 years
 
- Lab and computer equipment, software
 
 
2,210
 
 
2,017
 
 
3-5 years
 
- Furniture & fixtures
 
 
249
 
 
246
 
 
7-8 years
 
- Leasehold improvements
 
 
70
 
 
40
 
 
3 years
 
- Equipment under construction
 
 
37
 
 
96
 
 
 
 
Subtotal
 
 
14,662
 
 
14,230
 
 
 
 
Accumulated depreciation
 
 
10,126
 
 
9,465
 
 
 
 
Total
 
$
4,536
 
$
4,765
 
 
 
 
 
Depreciation expense for the years ended December 31, 2013 and 2012 was $779,000 and $524,000, respectively.