v3.10.0.1
ACQUISITIONS, DIVESTITURES AND PRO FORMA SUMMARY (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2018
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Nov. 17, 2017
Acquisition [Line Items]                
Payments to Acquire Businesses, Gross         $ 71,434 $ 24,000    
Purchase price allocation [Abstract]                
Property Plant And Equipment Net $ 328,041 $ 346,507     328,041   $ 346,507  
The expense recognized in the consolidated statement of income as merger and acquisition costs [Abstract]                
Merger and acquisition costs and restructuring charges 697   $ 8,825   2,768 24,925    
Restructuring Charges 852   0   3,019 0    
Transition Services Costs         0      
Other Restructuring Costs (80)   0   392 0    
Total Restructuring Charge and Transition Services         0      
Lease Abandonment Costs         257 0    
Changes in Estimates         0 0    
Workforce Reduction 1,410   0   2,338 0    
Costs to Exit Duplicative Contracts 478   0   32 0    
Unaudited Pro Forma Summary Of Financial Information                
Net revenues 379,933   418,902   1,061,891 1,195,338    
Net income $ 38,937   $ 36,659   $ 31,428 $ 85,270    
Net income per common share - basic $ 0.28   $ 0.26   $ 0.23 $ 0.59    
Net income per common share - diluted $ 0.28   $ 0.26   $ 0.23 $ 0.59    
Net income, available to common shareholders $ 38,937   $ 35,996   $ 31,428 $ 83,507    
ProFormaWeightedAverageSharesOutstandingDiluted 139,102,560   141,135,470   139,684,890 140,362,282    
WeightedAverageBasicSharesOutstandingProForma 138,740,243   140,362,282   138,901,037 140,355,027    
Income (Loss) from Continuing Operations, Per Outstanding Share, Total $ 0.26   $ 0.09   $ 0.17 $ (0.01)    
Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share 0   0   0.01 0    
Income (Loss) from Continuing Operations, Per Diluted Share 0.26   0.09   0.17 (0.01)    
Income (Loss) from Discontinued Operations, Net of Tax, Per Diluted Share $ 0   $ 0   $ 0.01 $ 0    
Weighted Average Number Of Shares Outstanding Basic 138,740,243   38,954,788   138,901,037 38,947,533    
Weighted Average Number Of Diluted Shares Outstanding 139,102,560   39,727,976   139,684,890 38,947,533    
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest $ 36,590 $ 232,665 $ 4,100   $ 23,981 $ 1,184    
Income Loss From Discontinued Operations Net Of Tax 358   $ 0   1,530 $ 0    
Adjustment to Acquired Goodwill Current Assets         1,300      
Adjustments to Acquired Goodwill TIA         2,300      
Radio Broadcasting Licences [Member]                
Purchase price allocation [Abstract]                
Total intangible assets         0   17,174  
Goodwill [Member]                
Purchase price allocation [Abstract]                
Total intangible assets         0   43  
CBS Radio [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total intangible assets         2,999,619   $ 3,002,094  
Total assets 3,539,901       3,539,901      
Net assets acquired 1,168,848       1,168,848      
Total current assets 275,900       275,900      
Total current liabilities 133,283       133,283      
Total liabilities acquired 2,371,053       2,371,053      
Property, Plant and Equipment, Gross 264,382       264,382      
CBS Radio [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain] | MeasurementInputLongTermRevenueGrowthRateMember [Member]                
Unaudited Pro Forma Summary Of Financial Information                
Long Term Revenue Growth Rate             1.00%  
CBS Radio [Member] | CurrentLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total liabilities acquired 13,859       13,859      
CBS Radio [Member] | CurrentLiabilitiesDomain [Domain] | Unfavorable lease Liabilities Member [Member]                
Purchase price allocation [Abstract]                
Total liabilities acquired 12,770       12,770      
CBS Radio [Member] | CurrentLiabilitiesDomain [Domain] | Unfavorable contracts Member [Member]                
Purchase price allocation [Abstract]                
Total liabilities acquired 22,597       22,597      
CBS Radio [Member] | CurrentLiabilitiesDomain [Domain] | Noncurrent Portion of Long Term Debt Member [Member]                
Purchase price allocation [Abstract]                
Total liabilities acquired 1,376,900       1,376,900      
CBS Radio [Member] | CurrentLiabilitiesDomain [Domain] | Deferred Tax Liability Member [Member]                
Purchase price allocation [Abstract]                
Total liabilities acquired 777,883       777,883      
CBS Radio [Member] | Accrued Compensation Member [Member] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current liabilities 26,324       26,324      
CBS Radio [Member] | Current Portion of Long Term Debt Member [Member] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current liabilities 10,600       10,600      
CBS Radio [Member] | Current portion of unfavorable contracts Member [Member] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current liabilities 4,803       4,803      
CBS Radio [Member] | Accrued interest member [Member] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current liabilities 4,529       4,529      
CBS Radio [Member] | Current Portion of Unearned Revenue Member [Member] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current liabilities 14,971       14,971      
CBS Radio [Member] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current liabilities 36,558       36,558      
CBS Radio [Member]                
Unaudited Pro Forma Summary Of Financial Information                
Discount Rates             9.00%  
Shares Issued Pursuant to Acquisition             101,407,494  
CBS Radio [Member] | AccruedExpensesMember [Member] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current liabilities 35,498       35,498      
CBS Radio [Member] | Accounts Receivable [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current assets 241,548       241,548      
CBS Radio [Member] | Prepaid contracts member [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current assets 4,160       4,160      
CBS Radio [Member] | PrepaidExpensesMember [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current assets 21,101       21,101      
CBS Radio [Member] | OtherCurrentAssetsMember | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current assets 9,091       9,091      
CBS Radio [Member] | As Previously Reported [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total intangible assets         2,475   $ 3,002,094  
Total assets               $ 3,540,159
Net assets acquired               1,168,848
Total current assets               273,683
Total current liabilities               132,518
Total liabilities acquired               2,371,311
CBS Radio [Member] | As Previously Reported [Member] | CurrentLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total liabilities acquired               13,859
CBS Radio [Member] | As Previously Reported [Member] | CurrentLiabilitiesDomain [Domain] | Unfavorable lease Liabilities Member [Member]                
Purchase price allocation [Abstract]                
Total liabilities acquired               12,770
CBS Radio [Member] | As Previously Reported [Member] | CurrentLiabilitiesDomain [Domain] | Unfavorable contracts Member [Member]                
Purchase price allocation [Abstract]                
Total liabilities acquired               22,597
CBS Radio [Member] | As Previously Reported [Member] | CurrentLiabilitiesDomain [Domain] | Noncurrent Portion of Long Term Debt Member [Member]                
Purchase price allocation [Abstract]                
Total liabilities acquired               1,376,900
CBS Radio [Member] | As Previously Reported [Member] | CurrentLiabilitiesDomain [Domain] | Deferred Tax Liability Member [Member]                
Purchase price allocation [Abstract]                
Total liabilities acquired               780,832
CBS Radio [Member] | As Previously Reported [Member] | Accrued Compensation Member [Member] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current liabilities               26,324
CBS Radio [Member] | As Previously Reported [Member] | Current Portion of Long Term Debt Member [Member] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current liabilities               10,600
CBS Radio [Member] | As Previously Reported [Member] | Current portion of unfavorable contracts Member [Member] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current liabilities               4,803
CBS Radio [Member] | As Previously Reported [Member] | Accrued interest member [Member] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current liabilities               4,529
CBS Radio [Member] | As Previously Reported [Member] | Current Portion of Unearned Revenue Member [Member] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current liabilities               14,971
CBS Radio [Member] | As Previously Reported [Member] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current liabilities               36,137
CBS Radio [Member] | As Previously Reported [Member] | AccruedExpensesMember [Member] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current liabilities               35,154
CBS Radio [Member] | As Previously Reported [Member] | Accounts Receivable [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current assets               241,548
CBS Radio [Member] | As Previously Reported [Member] | Prepaid contracts member [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current assets               4,160
CBS Radio [Member] | As Previously Reported [Member] | PrepaidExpensesMember [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current assets               20,625
CBS Radio [Member] | As Previously Reported [Member] | OtherCurrentAssetsMember | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current assets               7,350
CBS Radio [Member] | Adjustment [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total assets (258)       (258)      
Net assets acquired 0       0      
Total current assets 2,217       2,217      
Total current liabilities 765       765      
Total liabilities acquired (258)       (258)      
CBS Radio [Member] | Adjustment [Member] | CurrentLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total liabilities acquired 0       0      
CBS Radio [Member] | Adjustment [Member] | CurrentLiabilitiesDomain [Domain] | Unfavorable lease Liabilities Member [Member]                
Purchase price allocation [Abstract]                
Total liabilities acquired 0       0      
CBS Radio [Member] | Adjustment [Member] | CurrentLiabilitiesDomain [Domain] | Unfavorable contracts Member [Member]                
Purchase price allocation [Abstract]                
Total liabilities acquired 0       0      
CBS Radio [Member] | Adjustment [Member] | CurrentLiabilitiesDomain [Domain] | Noncurrent Portion of Long Term Debt Member [Member]                
Purchase price allocation [Abstract]                
Total liabilities acquired 0       0      
CBS Radio [Member] | Adjustment [Member] | CurrentLiabilitiesDomain [Domain] | Deferred Tax Liability Member [Member]                
Purchase price allocation [Abstract]                
Total liabilities acquired (2,949)       (2,949)      
CBS Radio [Member] | Adjustment [Member] | Accrued Compensation Member [Member] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current liabilities 0       0      
CBS Radio [Member] | Adjustment [Member] | Current Portion of Long Term Debt Member [Member] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current liabilities 0       0      
CBS Radio [Member] | Adjustment [Member] | Current portion of unfavorable contracts Member [Member] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current liabilities 0       0      
CBS Radio [Member] | Adjustment [Member] | Accrued interest member [Member] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current liabilities 0       0      
CBS Radio [Member] | Adjustment [Member] | Current Portion of Unearned Revenue Member [Member] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current liabilities 0       0      
CBS Radio [Member] | Adjustment [Member] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current liabilities 421       421      
CBS Radio [Member] | Adjustment [Member] | AccruedExpensesMember [Member] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current liabilities 344       344      
CBS Radio [Member] | Adjustment [Member] | Accounts Receivable [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current assets 0       0      
CBS Radio [Member] | Adjustment [Member] | Prepaid contracts member [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current assets 0       0      
CBS Radio [Member] | Adjustment [Member] | PrepaidExpensesMember [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current assets 476       476      
CBS Radio [Member] | Adjustment [Member] | OtherCurrentAssetsMember | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total current assets 1,741       1,741      
CBS Radio [Member] | OtherNoncurrentLiabilitiesMember | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total liabilities acquired 33,761       33,761      
CBS Radio [Member] | OtherNoncurrentLiabilitiesMember | As Previously Reported [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total liabilities acquired               31,835
CBS Radio [Member] | OtherNoncurrentLiabilitiesMember | Adjustment [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total liabilities acquired 1,926       1,926      
CBS Radio [Member] | Leasehold improvements [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Property, Plant and Equipment, Gross 36,029       36,029      
CBS Radio [Member] | Leasehold improvements [Member] | As Previously Reported [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Property, Plant and Equipment, Gross               26,255
CBS Radio [Member] | Leasehold improvements [Member] | Adjustment [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Property, Plant and Equipment, Gross 9,774       9,774      
CBS Radio [Member] | Furniture and equipment [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Property, Plant and Equipment, Gross 4,080       4,080      
CBS Radio [Member] | Furniture and equipment [Member] | As Previously Reported [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Property, Plant and Equipment, Gross               10,929
CBS Radio [Member] | Furniture and equipment [Member] | Adjustment [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Property, Plant and Equipment, Gross (6,849)       (6,849)      
CBS Radio [Member] | Equipment [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Property, Plant and Equipment, Gross 81,407       81,407      
CBS Radio [Member] | Equipment [Member] | As Previously Reported [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Property, Plant and Equipment, Gross               76,486
CBS Radio [Member] | Equipment [Member] | Adjustment [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Property, Plant and Equipment, Gross 4,921       4,921      
CBS Radio [Member] | Land and Land Improvements [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Property, Plant and Equipment, Gross 1,348       1,348      
CBS Radio [Member] | Land and Land Improvements [Member] | As Previously Reported [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Property, Plant and Equipment, Gross               3,988
CBS Radio [Member] | Land and Land Improvements [Member] | Adjustment [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Property, Plant and Equipment, Gross (2,640)       (2,640)      
CBS Radio [Member] | Land [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Property, Plant and Equipment, Gross 112,880       112,880      
CBS Radio [Member] | Land [Member] | As Previously Reported [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Property, Plant and Equipment, Gross               112,880
CBS Radio [Member] | Land [Member] | Adjustment [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Property, Plant and Equipment, Gross 0       0      
CBS Radio [Member] | Building [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Property, Plant and Equipment, Gross 14,040       14,040      
CBS Radio [Member] | Building [Member] | As Previously Reported [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Property, Plant and Equipment, Gross               19,246
CBS Radio [Member] | Building [Member] | Adjustment [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Property, Plant and Equipment, Gross (5,206)       (5,206)      
CBS Radio [Member] | ConstructionInProgressMember | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Property, Plant and Equipment, Gross 14,598       14,598      
CBS Radio [Member] | ConstructionInProgressMember | As Previously Reported [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Property, Plant and Equipment, Gross               14,598
CBS Radio [Member] | ConstructionInProgressMember | Adjustment [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Property, Plant and Equipment, Gross 0       0      
CBS Radio [Member] | Total Tangible Property Member [Member] | As Previously Reported [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Property, Plant and Equipment, Gross               264,382
CBS Radio [Member] | Total Tangible Property Member [Member] | Adjustment [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Property, Plant and Equipment, Gross 0       0      
CBS Radio [Member] | Radio Broadcasting Licences [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Intangible assets non amortizable 1,880,400       1,880,400      
CBS Radio [Member] | Radio Broadcasting Licences [Member] | As Previously Reported [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Intangible assets non amortizable               1,880,400
CBS Radio [Member] | Radio Broadcasting Licences [Member] | Adjustment [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Intangible assets non amortizable 0       0      
CBS Radio [Member] | Goodwill [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Intangible assets non amortizable 814,310       814,310      
CBS Radio [Member] | Goodwill [Member] | As Previously Reported [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Intangible assets non amortizable               820,961
CBS Radio [Member] | Goodwill [Member] | Adjustment [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Intangible assets non amortizable (6,651)       (6,651)      
CBS Radio [Member] | Advertiser lists and customer relationships [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Intangible assets amortizable 27,453       27,453      
CBS Radio [Member] | Advertiser lists and customer relationships [Member] | As Previously Reported [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Intangible assets amortizable               27,453
CBS Radio [Member] | Advertiser lists and customer relationships [Member] | Adjustment [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Intangible assets amortizable 0       0      
CBS Radio [Member] | Assets Held For Sale [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Intangible assets amortizable 255,650       255,650      
CBS Radio [Member] | Assets Held For Sale [Member] | As Previously Reported [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total assets               255,650
CBS Radio [Member] | Assets Held For Sale [Member] | Adjustment [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total assets 0       0      
CBS Radio [Member] | Lease Agreements [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Intangible assets amortizable 16,580       16,580      
CBS Radio [Member] | Lease Agreements [Member] | As Previously Reported [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total assets               16,580
CBS Radio [Member] | Lease Agreements [Member] | Adjustment [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total assets 0       0      
CBS Radio [Member] | Other Noncurrent Assets [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Intangible assets amortizable 5,226       5,226      
CBS Radio [Member] | Other Noncurrent Assets [Member] | As Previously Reported [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total assets               $ 1,050
CBS Radio [Member] | Other Noncurrent Assets [Member] | Adjustment [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total assets 4,176       4,176      
Bonneville Transaction - CBS Radio Member | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Unaudited Pro Forma Summary Of Financial Information                
Gain Loss on sale of station         400      
ProceedsFromDivestitureOfBusinesses         141,000      
Bonneville Transaction - CBS Radio Member                
Unaudited Pro Forma Summary Of Financial Information                
Gain Loss on sale of station       $ 400        
ProceedsFromDivestitureOfBusinesses       $ 140,300        
Emmis [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Acquisition [Line Items]                
Payments to Acquire Businesses, Gross         15,000      
Purchase price allocation [Abstract]                
Total intangible assets         13,442      
Total assets 15,000       15,000      
Net assets acquired 15,000       $ 15,000      
Unaudited Pro Forma Summary Of Financial Information                
Discount Rates         9.00%      
Emmis [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain] | MeasurementInputLongTermRevenueGrowthRateMember [Member]                
Unaudited Pro Forma Summary Of Financial Information                
Long Term Revenue Growth Rate         1.00%      
Emmis [Member] | Equipment [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Property, Plant and Equipment, Gross 1,558       $ 1,558      
Emmis [Member] | Equipment [Member] | Maximum [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Tangible assets amortization period         7 years      
Emmis [Member] | Equipment [Member] | Minimum [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Tangible assets amortization period         3 years      
Emmis [Member] | Total Tangible Property Member [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Property, Plant and Equipment, Gross 1,558       $ 1,558      
Emmis [Member] | Radio Broadcasting Licences [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total intangible assets         12,785      
Emmis [Member] | Goodwill [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total intangible assets         332      
Emmis [Member] | Advertiser lists and customer relationships [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total intangible assets         $ 207      
Emmis [Member] | Advertiser lists and customer relationships [Member] | Maximum [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Intangible assets amortization period         15 years      
Emmis [Member] | Advertiser lists and customer relationships [Member] | Minimum [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Intangible assets amortization period         5 years      
Emmis [Member] | Acquired advertising contracts [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total intangible assets         $ 114      
Emmis [Member] | Acquired advertising contracts [Member] | Maximum [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Intangible assets amortization period         1 year      
Emmis [Member] | Acquired advertising contracts [Member] | Minimum [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Intangible assets amortization period         1 year      
Emmis [Member] | Other Noncurrent Assets [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total intangible assets         $ 4      
Emmis [Member] | Other Noncurrent Assets [Member] | Maximum [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Intangible assets amortization period         2 years      
Emmis [Member] | Other Noncurrent Assets [Member] | Minimum [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Intangible assets amortization period         2 years      
Jerry Lee [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Acquisition [Line Items]                
Payments to Acquire Businesses, Gross         $ 57,500      
Purchase price allocation [Abstract]                
Total intangible assets         55,453      
Total assets 56,434       56,434      
Net assets acquired $ 56,434       $ 56,434      
Unaudited Pro Forma Summary Of Financial Information                
Discount Rates         9.00%      
Jerry Lee [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain] | MeasurementInputLongTermRevenueGrowthRateMember [Member]                
Unaudited Pro Forma Summary Of Financial Information                
Long Term Revenue Growth Rate         1.00%      
Jerry Lee [Member] | Maximum [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Tangible assets amortization period         7 years      
Jerry Lee [Member] | Minimum [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Tangible assets amortization period         3 years      
Jerry Lee [Member] | Equipment [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total tangible assets         $ 981      
Jerry Lee [Member] | Equipment [Member] | Minimum [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Tangible assets amortization period         3 years      
Jerry Lee [Member] | Total Tangible Property Member [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total tangible assets         $ 981      
Jerry Lee [Member] | Radio Broadcasting Licences [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total intangible assets         27,346      
Jerry Lee [Member] | Goodwill [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total intangible assets         24,396      
Jerry Lee [Member] | Acquired advertising contracts [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total intangible assets         $ 477      
Jerry Lee [Member] | Acquired advertising contracts [Member] | Maximum [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Intangible assets amortization period         1 year      
Jerry Lee [Member] | Acquired advertising contracts [Member] | Minimum [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Intangible assets amortization period         1 year      
Jerry Lee [Member] | Other Noncurrent Assets [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Purchase price allocation [Abstract]                
Total intangible assets         $ 3,234      
Beasley - WXTU [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]                
Unaudited Pro Forma Summary Of Financial Information                
ProceedsFromDivestitureOfBusinesses         $ 38,000