|
Property, plant and equipment (Details) (USD $)
In Thousands, unless otherwise specified |
Sep. 30, 2014
|
Dec. 31, 2013
|
|---|---|---|
| Property, plant and equipment | ||
| Total property, plant and equipment | $ 59,317 | $ 56,660 |
| Less accumulated depreciation | (33,678) | (31,794) |
| Net property, plant and equipment | 25,639 | 24,866 |
|
Land
|
||
| Property, plant and equipment | ||
| Total property, plant and equipment | 1,160 | 1,160 |
|
Land improvements
|
||
| Property, plant and equipment | ||
| Total property, plant and equipment | 1,962 | 1,849 |
|
Buildings
|
||
| Property, plant and equipment | ||
| Total property, plant and equipment | 16,840 | 16,743 |
|
Machinery and equipment
|
||
| Property, plant and equipment | ||
| Total property, plant and equipment | 28,026 | 25,756 |
|
Furniture and fixtures
|
||
| Property, plant and equipment | ||
| Total property, plant and equipment | 9,288 | 8,772 |
|
Mobile equipment and other
|
||
| Property, plant and equipment | ||
| Total property, plant and equipment | 1,374 | 1,267 |
|
Construction-in-process
|
||
| Property, plant and equipment | ||
| Total property, plant and equipment | $ 667 | $ 1,113 |