| Summary of property, plant and equipment |
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March 31,
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December 31,
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2014
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2013
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Land
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$
|
1,160
|
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$
|
1,160
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Land improvements
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|
|
1,849
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|
|
1,849
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Buildings
|
|
|
16,743
|
|
|
16,743
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Machinery and equipment
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|
|
26,212
|
|
|
25,756
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Furniture and fixtures
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|
|
9,013
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|
|
8,772
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Mobile equipment and other
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|
|
1,222
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|
|
1,267
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Construction-in-process
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|
|
1,580
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|
|
1,113
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Total property, plant and equipment
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|
|
57,779
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|
|
56,660
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Less accumulated depreciation
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|
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(32,447)
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(31,794)
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Net property, plant and equipment
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|
$
|
25,332
|
|
$
|
24,866
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|