v3.10.0.1

SUPPLEMENTAL CASH FLOW DISCLOSURES ON NON-CASH INVESTING AND FINANCING ACTIVITIES (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Cash Flow Noncash [Line Items] |  |  |
Net Paid In Captital Of Rsus | $ 8,850 | $ 34,511 | $ 10,101
Transition Services Costs incurred in Merger | 5,456 | 1,917 | 0
Reduction in Transition Services Costs | (5,456) | (1,917) | 0
Perpetual Cumulative Convertible Preferred Stock Issued For Acquisition | 0 | 0 | 0
Dividend Accrued On Perpetual Cumulative Convertible Preferred Stock | 0 | 0 | 452
Finance Method Lease Obligations Retirement | 0 | 0 | 0
Net Radio Station Assets Given Up | 0 | 124,500 | 0
Net Radio Station Assets Acquired | 0 | 124,500 | 0
Radio Station Assets Acquired Using Preferred Stock | 0 | 0 | 0
Cash acquired through consolidation of a VIE | 0 | (302) | 302
Radio station assets acquired through the issuance of common stock | 0 | 1,168,848 | 0
Barter And Other Transactions [Abstract] |  |  |
Barter Revenues | 19,365 | 10,898 | 4,700
Barter expenses | 19,324 | 9,440 | 4,789
Issuance [Member] |  |  |
Cash Flow Noncash [Line Items] |  |  |
Net Paid In Captital Of Rsus | 10,078 | 35,628 | 10,381
Forfeited [Member] |  |  |
Cash Flow Noncash [Line Items] |  |  |
Net Paid In Captital Of Rsus | $ 1,228 | $ 1,117 | $ 280

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