PROPERTY, PLANT AND EQUIPMENT, INTANGIBLE ASSETS AND GOODWILL - Narrative (Details) - USD ($) $ in Thousands |
3 Months Ended | 4 Months Ended | 5 Months Ended | 9 Months Ended | |||
---|---|---|---|---|---|---|---|
Oct. 22, 2020 |
Sep. 30, 2020 |
Mar. 31, 2020 |
Sep. 30, 2019 |
May 01, 2019 |
Sep. 30, 2019 |
Sep. 30, 2020 |
|
Indefinite-lived Intangible Assets [Line Items] | |||||||
Total amortization expense related to definite-lived intangible assets | $ 64,500 | $ 67,000 | $ 12,700 | $ 109,500 | $ 193,000 | ||
Goodwill impairment | $ 1,200,000 | $ 1,224,374 | |||||
Voxnest | Subsequent Event | |||||||
Indefinite-lived Intangible Assets [Line Items] | |||||||
Consideration transferred for acquisition | $ 50,000 | ||||||
FCC Licenses | |||||||
Indefinite-lived Intangible Assets [Line Items] | |||||||
Impairment of FCC licenses | $ 502,700 | $ 91,400 |