SIGNIFICANT ACCOUNTING POLICIES - Depreciation using straight-line method over the estimated useful lives (Details) |
12 Months Ended |
|---|---|
Dec. 31, 2019 | |
| Buildings [member] | |
| Disclosure Of Significant Accounting Policies [Line Items] | |
| Useful lives or depreciation rates, property, plant and equipment | 33 years |
| Installations [member] | |
| Disclosure Of Significant Accounting Policies [Line Items] | |
| Useful lives or depreciation rates, property, plant and equipment | 10 years |
| Furniture and fixtures [member] | |
| Disclosure Of Significant Accounting Policies [Line Items] | |
| Useful lives or depreciation rates, property, plant and equipment | 10 years |
| Vehicles and equipment [member] | |
| Disclosure Of Significant Accounting Policies [Line Items] | |
| Useful lives or depreciation rates, property, plant and equipment | 5 years |
| Computer hardware [member] | |
| Disclosure Of Significant Accounting Policies [Line Items] | |
| Useful lives or depreciation rates, property, plant and equipment | 4 years |