Property, Plant and Equipment (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| Property, plant and equipment | |||
| Property, plant, and equipment, gross | $ 27,272 | $ 42,002 | |
| Less: accumulated depreciation | (14,403) | (31,588) | |
| Property, plant, and equipment, net | 12,869 | 10,414 | |
| Depreciation expense | 2,600 | 1,900 | $ 1,800 |
| Land | |||
| Property, plant and equipment | |||
| Property, plant, and equipment, gross | 90 | ||
| Buildings | |||
| Property, plant and equipment | |||
| Property, plant, and equipment, gross | 15,332 | ||
| Building improvements | |||
| Property, plant and equipment | |||
| Property, plant, and equipment, gross | 214 | 5,230 | |
| Software, machinery and equipment | |||
| Property, plant and equipment | |||
| Property, plant, and equipment, gross | $ 27,058 | $ 21,350 | |