v3.19.2

INTANGIBLE ASSETS AND GOODWILL - Changes in goodwill (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Dec. 31, 2018 | Jun. 30, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Goodwill [Line Items] |  |  |  |
Goodwill before cumulative loss on impairment | $ 982,663 |  | $ 982,663 | $ 988,056
Accumulated loss on impairment | 443,194 |  | 443,194 | $ 126,056
Beginning balance after cumulative loss on impairment |  | $ 539,469 | 862,000 |
Loss on impairment during the year | (317,100) |  | (317,138) |
Measurement period adjustments to acquired goodwill |  |  | (21,498) |
Ending balance | $ 539,469 | 536,687 | 539,469 |
Cumulus Exchange [Member] |  |  |  |
Goodwill [Line Items] |  |  |  |
Disposition of radio stations |  | (4,862) |  |
WXTU Transaction disposition [Member] |  |  |  |
Goodwill [Line Items] |  |  |  |
Disposition of radio stations |  |  | (8,623) |
Cumulus Exchange [Member] |  |  |  |
Goodwill [Line Items] |  |  |  |
Acquisition of rasdio stations |  | $ 2,080 |  |
Emmis Acquisition [Member] |  |  |  |
Goodwill [Line Items] |  |  |  |
Acquisition of rasdio stations |  |  | 332 |
Jerry Lee Transaction [Member] |  |  |  |
Goodwill [Line Items] |  |  |  |
Acquisition of rasdio stations |  |  | $ 24,396 |

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