BUSINESS COMBINATION - Estimated fair value and useful life of identifiable intangible assets (Details) - USD ($) $ in Thousands |
9 Months Ended | 12 Months Ended | |
|---|---|---|---|
Apr. 01, 2020 |
Sep. 30, 2021 |
Dec. 31, 2020 |
|
| Patents | |||
| Business Acquisition | |||
| Remaining economic useful life (in years) | 14 years | 14 years 8 months 12 days | |
| ApiFix Ltd | |||
| Business Acquisition | |||
| Fair value of identifiable intangible assets | $ 40,790 | ||
| ApiFix Ltd | Patents | |||
| Business Acquisition | |||
| Finite-lived intangible assets acquired | $ 31,720 | ||
| Remaining economic useful life (in years) | 15 years | ||
| ApiFix Ltd | Customer Relationships | |||
| Business Acquisition | |||
| Finite-lived intangible assets acquired | $ 230 | ||
| Remaining economic useful life (in years) | 10 years | ||
| ApiFix Ltd | Non-competition Agreements | |||
| Business Acquisition | |||
| Finite-lived intangible assets acquired | $ 200 | ||
| Remaining economic useful life (in years) | 4 years | ||
| ApiFix Ltd | Trademarks / Names | |||
| Business Acquisition | |||
| Indefinite-lived intangible assets acquired | $ 8,640 |