GOODWILL AND INTANGIBLE ASSETS - Changes in Goodwill (Details) - USD ($) $ in Thousands |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2020 |
Dec. 31, 2019 |
|
| Goodwill [Roll Forward] | ||
| Goodwill, beginning balance | $ 13,773 | $ 0 |
| Goodwill, ending balance | 68,420 | 13,773 |
| Vilex | ||
| Goodwill [Roll Forward] | ||
| Goodwill, acquired during period | 17,170 | |
| Goodwill, divestiture of business | $ (3,397) | |
| Telos | ||
| Goodwill [Roll Forward] | ||
| Goodwill, acquired during period | 1,912 | |
| Orthex | ||
| Goodwill [Roll Forward] | ||
| Goodwill, measurement period adjustment | (688) | |
| ApiFix Ltd | ||
| Goodwill [Roll Forward] | ||
| Goodwill, acquired during period | $ 53,423 |