Property, plant, and equipment consisted of the following at December 31: | | | | | | | | | (dollars in thousands) | 2015 | | 2014 | Computer software | $ | 11,641 |
| | $ | 8,056 |
| Computer equipment | 4,055 |
| | 3,589 |
| Buildings | 59,315 |
| | 58,846 |
| Machinery and equipment | 47,234 |
| | 44,702 |
| Furniture and fixtures | 1,585 |
| | 1,429 |
| Leasehold improvements | 1,413 |
| | 1,051 |
| Buildings improvements | 86 |
| | 86 |
| Land | 346 |
| | 346 |
| Land improvements | 493 |
| | 784 |
| Construction in progress | 3,673 |
| | 2,169 |
| | 129,841 |
| | 121,058 |
| Accumulated depreciation and amortization | (14,681 | ) | | (7,195 | ) | Total | $ | 115,160 |
| | $ | 113,863 |
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