v3.10.0.1
SUPPLEMENTAL CASH FLOW DISCLOSURES ON NON-CASH INVESTING AND FINANCING ACTIVITIES (Details) - USD ($)
$ in Thousands
 12 Months Ended
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