Inventory (Details) - USD ($) $ in Thousands |
Jun. 30, 2019 |
Dec. 31, 2018 |
|---|---|---|
| Inventory Disclosure [Abstract] | ||
| Productive material, work in process and supplies | $ 1,309 | $ 92 |
| Finished product, including service parts, etc. | 3,820 | 2,174 |
| Total inventories | 5,129 | 2,266 |
| Reserve for obsolescence | (491) | (671) |
| Total inventories, net | $ 4,638 | $ 1,595 |