| Components of inventories |
Inventories consisted of the following: | | | | | | | | | | June 30,
2020 | | December 31,
2019 | Raw materials and parts | $ | 143,603 |
| | $ | 129,294 |
| Work-in-progress | 49,867 |
| | 43,202 |
| Finished goods | 106,276 |
| | 101,789 |
| | $ | 299,746 |
| | $ | 274,285 |
|
|
| Components of other intangible assets |
Other intangible assets consisted of the following: | | | | | | | | | | | | | | | | | | | | | | | | | | June 30, 2020 | | December 31, 2019 | | Gross Amount | | Accumulated Amortization | | Intangibles, Net | | Gross Amount | | Accumulated Amortization | | Intangibles, Net | Customer relationships | $ | 200,104 |
| | $ | (63,108 | ) | | $ | 136,996 |
| | $ | 197,764 |
| | $ | (58,851 | ) | | $ | 138,913 |
| Proven technology and patents | 75,857 |
| | (48,797 | ) | | 27,060 |
| | 75,170 |
| | (46,532 | ) | | 28,638 |
| Tradenames (finite life) | 4,556 |
| | (3,149 | ) | | 1,407 |
| | 4,594 |
| | (3,124 | ) | | 1,470 |
| Tradenames (indefinite life) | 35,474 |
| | — |
| | 35,474 |
| | 35,474 |
| | — |
| | 35,474 |
| Other | 5,705 |
| | (4,511 | ) | | 1,194 |
| | 5,462 |
| | (3,715 | ) | | 1,747 |
| | $ | 321,696 |
| | $ | (119,565 | ) | | $ | 202,131 |
| | $ | 318,464 |
| | $ | (112,222 | ) | | $ | 206,242 |
|
|