SIGNIFICANT ACCOUNTING POLICIES - Amortization Intangible Assets, net (Details) |
9 Months Ended |
|---|---|
Sep. 30, 2021 | |
| Minimum | |
| Finite-Lived Intangible Assets | |
| Intangible asset, useful life (in years) | 3 years |
| Maximum | |
| Finite-Lived Intangible Assets | |
| Intangible asset, useful life (in years) | 20 years |