| Summary of property, plant and equipment |
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March 31,
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December 31,
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2015
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2014
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Land
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$
|
1,500
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|
$
|
1,500
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Land improvements
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|
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2,292
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|
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2,292
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Leasehold Improvements
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|
|
499
|
|
|
499
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Buildings
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|
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22,081
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|
|
21,918
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Machinery and equipment
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|
|
31,675
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31,780
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Furniture and fixtures
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|
|
10,195
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|
|
10,070
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Mobile equipment and other
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|
|
2,076
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|
|
1,999
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Construction-in-process
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|
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2,695
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|
1,930
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Total property, plant and equipment
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|
|
73,013
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|
|
71,988
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Less accumulated depreciation
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(35,365)
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(34,442)
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Net property, plant and equipment
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|
$
|
37,648
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|
$
|
37,546
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