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BASIS OF PRESENTATION - Schedule of Trade and Barter Revenues and Expenses (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Segment Reporting Information [Line Items] |  |  |  |
Trade and barter revenues | $ 40,318 | $ 52,023 | $ 97,710 | $ 112,444
Trade and barter expenses | 34,398 | 35,836 | 102,671 | 91,830
iHM |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Trade and barter revenues | 35,992 | 47,184 | 89,938 | 103,280
Trade and barter expenses | $ 31,690 | $ 33,859 | $ 96,220 | $ 86,356

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- Definition Total expense recognized from advertising barter transactions for each income statement presented. + References No definition available. + Details
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X
- Definition Total revenue recognized from advertising barter transactions for each income statement presented. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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