INTANGIBLE ASSETS AND GOODWILL - Assumption of impairment (Details) - Broadcasting Licenses |
3 Months Ended | ||
|---|---|---|---|
Sep. 30, 2020 |
Jun. 30, 2020 |
Dec. 31, 2019 |
|
| Estimates and assumptions used for impairment test [Line Items] | |||
| Discount rate | 7.50% | 8.00% | 8.50% |
| Minimum | |||
| Estimates and assumptions used for impairment test [Line Items] | |||
| Operating profit margin ranges expected for average stations in the markets where the Company operates | 24.00% | 22.00% | 18.00% |
| Forecasted growth rate (including long-term growth rate) range of the Company's markets | 0.00% | 0.00% | 0.00% |
| Maximum | |||
| Estimates and assumptions used for impairment test [Line Items] | |||
| Operating profit margin ranges expected for average stations in the markets where the Company operates | 36.00% | 36.00% | 36.00% |
| Forecasted growth rate (including long-term growth rate) range of the Company's markets | 0.70% | 0.80% | 0.80% |