v3.8.0.1

ACQUISITIONS, DIVESTITURES AND PRO FORMA SUMMARY (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Nov. 17, 2017	Jan. 06, 2017
CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Unaudited Pro Forma Summary Of Financial Information
ProFormaWeightedAverageSharesOutstandingDiluted									141,790,000	139,908,000	39,038,000
WeightedAverageBasicSharesOutstandingProForma									140,298,000	139,908,000	38,084,000
Income (Loss) from Continuing Operations, Per Outstanding Share, Total									$ 3.01	$ (4.2)	$ 0.81
Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share									0.01	0	0
Income (Loss) from Continuing Operations, Per Diluted Share									3.02	(4.2)	0.79
Income (Loss) from Discontinued Operations, Net of Tax, Per Diluted Share									$ 0.01	$ 0	$ 0
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest									$ 422,901	$ (587,393)	$ 33,050
Income Loss From Discontinued Operations Net Of Tax									836	0	0
Payments to Acquire Businesses, Gross									24,000	92	83,553
Total intangible assets									17,174	0
Property, Plant and Equipment, Gross	$ 461,131				$ 187,796				461,131	187,796
Property Plant And Equipment Net	346,507				63,375				346,507	63,375
Depreciation									13,215	8,689	7,419
AssetRetirementObligation	1,714				1,044				1,714	1,044	569
Merger and acquisition costs	$ 41,313				$ 708				41,313	708	3,978
Merger and acquisition costs and restructuring charges									41,313	708	3,978
Restructuring Charges									13,962	0	2,858
Transition Services Costs									2,960	0	0
Other Restructuring Costs									147	0	0
Total Restructuring Charge and Transition Services									16,922	0	2,858
Lease Abandonment Costs									2,874	0	687
Changes in Estimates									0	0	(13)
Workforce Reduction									10,441	0	1,538
Costs to Exit Duplicative Contracts									500	0	646
Net revenues									1,580,934	1,656,123	442,485
Net income									$ 423,737	$ (587,393)	$ 33,050
Net income per common share - basic									$ 3.01	$ (4.21)	$ 0.81
Net income per common share - diluted									$ 3.01	$ (4.21)	$ 0.79
Net income, available to common shareholders									$ 421,722	$ (589,294)	$ 30,850
Income (Loss) from Continuing Operations, Per Outstanding Share, Total	$ 2.63	$ 0.11	$ 0.16	$ (0.24)	$ 0.3	$ 0.3	$ 0.28	$ 0.11	$ 4.49	$ 0.94	$ 0.75
Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share	0.01	0	0	0	0	0	0	0	0.02	0	0
Income (Loss) from Continuing Operations, Per Diluted Share	2.58	0.28	0.26	0.11	0.28	0.28	0.26	0.11	4.37	0.91	0.73
Income (Loss) from Discontinued Operations, Net of Tax, Per Diluted Share	$ 0.01	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0.02	$ 0	$ 0
Weighted Average Number Of Shares Outstanding Basic	88,309,000	38,955,000	38,945,000	38,910,000	38,561,000	38,485,000	38,469,000	38,448,000	51,392,899	38,500,495	38,083,947
Weighted Average Number Of Diluted Shares Outstanding	89,887,000	39,728,000	39,656,000	38,910,000	39,800,000	41,433,000	41,130,000	39,260,000	55,678,189	39,568,062	39,037,623
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest	$ 231,829	$ 4,100	$ 6,414	$ (9,331)	$ 11,399	$ 11,420	$ 10,834	$ 4,412	$ 233,013	$ 38,065	$ 29,184
Income Loss From Discontinued Operations Net Of Tax	836	$ 0	$ 0	$ 0	0	$ 0	$ 0	$ 0	836	0	$ 0
Acquisition Price Paid Using Convertible Preferred Stock	0				27,500				0	27,500
Equipment [Member]
Purchase price allocation [Abstract]
Property, Plant and Equipment, Gross	204,789				112,362				$ 204,789	112,362
Equipment [Member] | Maximum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									40 years
Equipment [Member] | Minimum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									3 years
Building [Member]
Purchase price allocation [Abstract]
Property, Plant and Equipment, Gross	40,925				22,698				$ 40,925	22,698
Building [Member] | Maximum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									40 years
Building [Member] | Minimum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									20 years
LFM [Member]
Acquisition [Line Items]
Acquisition price paid from borrowing					42,000					42,000
Purchases of radio station assets					(77,500)					(77,500)
Purchase price allocation [Abstract]
Total tangible assets									$ 18,175
Total intangible assets									87,539
Total assets	120,863								120,863
Net assets acquired	113,390								113,390
Total current assets	15,149								15,149
Total current liabilities	4,201								4,201
Total liabilities acquired	7,473								$ 7,473
Unaudited Pro Forma Summary Of Financial Information
Acquisition Price Paid Using Convertible Preferred Stock					27,500					27,500
Aquisition Related Working Capital Reimbursement					11,000					11,000
Aquisition Related Working Capital Credit					2,700					2,700
Aquisition Purchase Price Total					105,000					105,000
Discount Rates									9.60%
LFM [Member] | Cash [Member]
Purchase price allocation [Abstract]
Total current assets	2,246								$ 2,246
LFM [Member] | Accounts Receivable [Member]
Purchase price allocation [Abstract]
Total current assets	11,933								11,933
LFM [Member] | Prepaid Expenses And Other Current Assets [Member]
Purchase price allocation [Abstract]
Total current assets	970								$ 970
LFM [Member] | Maximum [Member]
Unaudited Pro Forma Summary Of Financial Information
Fair Value Inputs Long Term Revenue Growth Rate									1.50%
LFM [Member] | Minimum [Member]
Unaudited Pro Forma Summary Of Financial Information
Fair Value Inputs Long Term Revenue Growth Rate									1.00%
LFM [Member] | Unfavorable lease liability [Member]
Purchase price allocation [Abstract]
Total current liabilities	3,272								$ 3,272
LFM [Member] | Accrued Liabilities [Member]
Purchase price allocation [Abstract]
Total current liabilities	3,466								3,466
LFM [Member] | Accounts Payable [Member]
Purchase price allocation [Abstract]
Total current liabilities	723								723
LFM [Member] | Liability [Member]
Purchase price allocation [Abstract]
Total current liabilities	12								12
LFM [Member] | Leasehold improvements [Member]
Purchase price allocation [Abstract]
Total tangible assets									$ 973
LFM [Member] | Leasehold improvements [Member] | Maximum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									11 years
LFM [Member] | Leasehold improvements [Member] | Minimum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									2 years
LFM [Member] | Furniture and equipment [Member]
Purchase price allocation [Abstract]
Total tangible assets									$ 29
LFM [Member] | Furniture and equipment [Member] | Maximum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									5 years
LFM [Member] | Furniture and equipment [Member] | Minimum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									5 years
LFM [Member] | Equipment [Member]
Purchase price allocation [Abstract]
Total tangible assets									$ 8,651
LFM [Member] | Equipment [Member] | Maximum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									40 years
LFM [Member] | Equipment [Member] | Minimum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									3 years
LFM [Member] | Land and Land Improvements [Member]
Purchase price allocation [Abstract]
Total tangible assets									$ 87
LFM [Member] | Land and Land Improvements [Member] | Maximum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									15 years
LFM [Member] | Land and Land Improvements [Member] | Minimum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									15 years
LFM [Member] | Land [Member]
Purchase price allocation [Abstract]
Total tangible assets									$ 7,368
LFM [Member] | Building [Member]
Purchase price allocation [Abstract]
Total tangible assets									$ 1,067
LFM [Member] | Building [Member] | Maximum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									25 years
LFM [Member] | Building [Member] | Minimum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									15 years
LFM [Member] | Radio Broadcasting Licences [Member]
Purchase price allocation [Abstract]
Total intangible assets									$ 79,209
LFM [Member] | Goodwill [Member]
Purchase price allocation [Abstract]
Total intangible assets									4,594
LFM [Member] | Assets Held For Sale [Member]
Purchase price allocation [Abstract]
Total intangible assets									1,885
LFM [Member] | Lease Agreements [Member]
Purchase price allocation [Abstract]
Total intangible assets									$ 487
LFM [Member] | Lease Agreements [Member] | Maximum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									5 years
LFM [Member] | Lease Agreements [Member] | Minimum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									1 year
LFM [Member] | Other Noncurrent Assets [Member]
Purchase price allocation [Abstract]
Total intangible assets									$ 1,364
BonnevilleSwap [Member]
Acquisition [Line Items]
Net time brokerage agreement (income) fees					$ 300					300
Purchase price allocation [Abstract]
Total tangible assets									1,133
Total intangible assets									53,326
Total assets	59,323								59,323
Net assets acquired	59,000								$ 59,000
Unaudited Pro Forma Summary Of Financial Information
Fair Value Inputs Long Term Revenue Growth Rate									1.00%
Discount Rates									9.20%
BonnevilleSwap [Member] | Accounts Receivable [Member]
Purchase price allocation [Abstract]
Total current assets	4,864								$ 4,864
BonnevilleSwap [Member] | Unfavorable lease liability [Member]
Purchase price allocation [Abstract]
Other long-term liabilities	$ 323								$ 323
BonnevilleSwap [Member] | Unfavorable lease liability [Member] | Maximum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									4 years
BonnevilleSwap [Member] | Unfavorable lease liability [Member] | Minimum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									1 year
BonnevilleSwap [Member] | Furniture and equipment [Member]
Purchase price allocation [Abstract]
Total tangible assets									$ 121
BonnevilleSwap [Member] | Furniture and equipment [Member] | Maximum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									5 years
BonnevilleSwap [Member] | Furniture and equipment [Member] | Minimum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									5 years
BonnevilleSwap [Member] | Equipment [Member]
Purchase price allocation [Abstract]
Total tangible assets									$ 1,012
BonnevilleSwap [Member] | Equipment [Member] | Maximum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									15 years
BonnevilleSwap [Member] | Equipment [Member] | Minimum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									3 years
BonnevilleSwap [Member] | Radio Broadcasting Licences [Member]
Purchase price allocation [Abstract]
Total intangible assets									$ 53,057
BonnevilleSwap [Member] | Goodwill [Member]
Purchase price allocation [Abstract]
Total intangible assets									266
BonnevilleSwap [Member] | Advertiser lists and customer relationships [Member]
Purchase price allocation [Abstract]
Total intangible assets									$ 1
BonnevilleSwap [Member] | Advertiser lists and customer relationships [Member] | Maximum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									3 years
BonnevilleSwap [Member] | Advertiser lists and customer relationships [Member] | Minimum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									3 years
BonnevilleSwap [Member] | Trademarks [Member]
Purchase price allocation [Abstract]
Total intangible assets									$ 2
BonnevilleSwap [Member] | Trademarks [Member] | Maximum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									5 years
BonnevilleSwap [Member] | Trademarks [Member] | Minimum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									5 years
KRWZAM [Member]
Unaudited Pro Forma Summary Of Financial Information
Expected gain on sale of station										300
ProceedsFromDivestitureOfBusinesses										$ 3,800
Charlotte [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Unaudited Pro Forma Summary Of Financial Information
Fair Value Inputs Long Term Revenue Growth Rate									1.00%
Discount Rates									9.00%
Charlotte [Member]
Purchase price allocation [Abstract]
Total assets													$ 24,996
Net assets acquired													24,000
Total liabilities acquired													996
Property, Plant and Equipment, Gross													7,325
Charlotte [Member] | Unfavorable lease liability [Member]
Purchase price allocation [Abstract]
Total current liabilities													735
Charlotte [Member] | OtherNoncurrentLiabilitiesMember
Purchase price allocation [Abstract]
Other long-term liabilities													261
Charlotte [Member] | Equipment [Member]
Purchase price allocation [Abstract]
Total tangible assets									$ 4,569
Charlotte [Member] | Equipment [Member] | Maximum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									40 years
Charlotte [Member] | Equipment [Member] | Minimum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									3 years
Charlotte [Member] | Land [Member]
Purchase price allocation [Abstract]
Total tangible assets									$ 2,539
Charlotte [Member] | Building [Member]
Purchase price allocation [Abstract]
Total tangible assets									$ 217
Charlotte [Member] | Building [Member] | Maximum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									25 years
Charlotte [Member] | Building [Member] | Minimum [Member]
Purchase price allocation [Abstract]
Tangible assets amortization period									15 years
Charlotte [Member] | Radio Broadcasting Licences [Member]
Purchase price allocation [Abstract]
Total intangible assets									$ 17,384
Charlotte [Member] | Other Noncurrent Assets [Member]
Purchase price allocation [Abstract]
Intangible assets non amortizable													$ 287
CBS Radio [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Total intangible assets									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
Property, Plant and Equipment, Gross												264,382
Unaudited Pro Forma Summary Of Financial Information
Revenues from continuing operations earned from Acquiree									133,600
Income befoer taxes earned from acquiree									$ 21,400
CBS Radio [Member] | CurrentLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Total liabilities acquired												13,859
CBS Radio [Member] | CurrentLiabilitiesDomain [Domain] | Unfavorable lease Liabilities Member [Member]
Purchase price allocation [Abstract]
Total liabilities acquired												12,770
CBS Radio [Member] | CurrentLiabilitiesDomain [Domain] | Unfavorable contracts Member [Member]
Purchase price allocation [Abstract]
Total liabilities acquired												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
CBS Radio [Member] | CurrentLiabilitiesDomain [Domain] | Deferred Tax Liability Member [Member]
Purchase price allocation [Abstract]
Total liabilities acquired												780,832
CBS Radio [Member] | Accrued Compensation Member [Member] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Total current liabilities												26,324
CBS Radio [Member] | Current Portion of Long Term Debt Member [Member] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Total current liabilities												10,600
CBS Radio [Member] | Current portion of unfavorable contracts Member [Member] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Total current liabilities												4,803
CBS Radio [Member] | Accrued interest member [Member] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Total current liabilities												4,529
CBS Radio [Member] | Current Portion of Unearned Revenue Member [Member] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Total current liabilities												14,971
CBS Radio [Member] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Total current liabilities												36,137
CBS Radio [Member]
Unaudited Pro Forma Summary Of Financial Information
Fair Value Inputs Long Term Revenue Growth Rate									1.00%
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												35,154
CBS Radio [Member] | Accounts Receivable [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Total current assets												241,548
CBS Radio [Member] | Prepaid contracts member [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Total current assets												4,160
CBS Radio [Member] | PrepaidExpensesMember [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Total current assets												20,625
CBS Radio [Member] | OtherCurrentAssetsMember | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Total current assets												7,350
CBS Radio [Member] | Maximum [Member] | CurrentLiabilitiesDomain [Domain] | Noncurrent Portion of Long Term Debt Member [Member]
Purchase price allocation [Abstract]
Intangible assets amortization period									7 years
CBS Radio [Member] | Minimum [Member] | CurrentLiabilitiesDomain [Domain] | Noncurrent Portion of Long Term Debt Member [Member]
Purchase price allocation [Abstract]
Intangible assets amortization period									5 years
CBS Radio [Member] | OtherNoncurrentLiabilitiesMember | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Total liabilities acquired												31,835
CBS Radio [Member] | Leasehold improvements [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Property, Plant and Equipment, Gross												36,029
CBS Radio [Member] | Furniture and equipment [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Property, Plant and Equipment, Gross												4,080
CBS Radio [Member] | Furniture and equipment [Member] | Maximum [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Tangible assets amortization period									7 years
CBS Radio [Member] | Furniture and equipment [Member] | Minimum [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Tangible assets amortization period									7 years
CBS Radio [Member] | Equipment [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Property, Plant and Equipment, Gross												81,407
CBS Radio [Member] | Equipment [Member] | Maximum [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Tangible assets amortization period									23 years
CBS Radio [Member] | Equipment [Member] | Minimum [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Tangible assets amortization period									3 years
CBS Radio [Member] | Land and Land Improvements [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Property, Plant and Equipment, Gross												1,348
CBS Radio [Member] | Land and Land Improvements [Member] | Maximum [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Tangible assets amortization period									10 years
CBS Radio [Member] | Land and Land Improvements [Member] | Minimum [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Tangible assets amortization period									10 years
CBS Radio [Member] | Land [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Property, Plant and Equipment, Gross												112,880
CBS Radio [Member] | Building [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Property, Plant and Equipment, Gross												14,040
CBS Radio [Member] | Building [Member] | Maximum [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Tangible assets amortization period									25 years
CBS Radio [Member] | Building [Member] | Minimum [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Tangible assets amortization period									25 years
CBS Radio [Member] | ConstructionInProgressMember | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Property, Plant and Equipment, Gross												14,598
CBS Radio [Member] | Radio Broadcasting Licences [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Intangible assets non amortizable												1,880,400
CBS Radio [Member] | Goodwill [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Intangible assets non amortizable												820,961
CBS Radio [Member] | Advertiser lists and customer relationships [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Intangible assets amortizable												27,453
CBS Radio [Member] | Advertiser lists and customer relationships [Member] | Maximum [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Intangible assets amortization period									5 years
CBS Radio [Member] | Advertiser lists and customer relationships [Member] | Minimum [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Intangible assets amortization period									5 years
CBS Radio [Member] | Assets Held For Sale [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Total assets												255,650
CBS Radio [Member] | Lease Agreements [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Total assets												16,580
CBS Radio [Member] | Other Noncurrent Assets [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Total assets												1,050
CBS Radio [Member] | Other Noncurrent Assets [Member] | Maximum [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Intangible assets amortization period									40 years
CBS Radio [Member] | Other Noncurrent Assets [Member] | Minimum [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Purchase price allocation [Abstract]
Intangible assets amortization period									3 years
Beasley Transatcion - CBS Radio Merger | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain] | Assets Acquired Member [Member]
Purchase price allocation [Abstract]
Total intangible assets									$ 36,233
Net assets acquired												48,900
Unaudited Pro Forma Summary Of Financial Information
Cash Acquired in Excess of Payments to Acquire Business									12,000
Beasley Transatcion - CBS Radio Merger | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain] | Assets Disposed Member [Member]
Purchase price allocation [Abstract]
Total intangible assets									48,093
Net assets acquired												48,900
Unaudited Pro Forma Summary Of Financial Information
Cash Acquired in Excess of Payments to Acquire Business									0
Beasley Transatcion - CBS Radio Merger | OtherCurrentAssetsMember | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain] | Assets Acquired Member [Member]
Purchase price allocation [Abstract]
Total intangible assets									0
Beasley Transatcion - CBS Radio Merger | OtherCurrentAssetsMember | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain] | Assets Disposed Member [Member]
Purchase price allocation [Abstract]
Total intangible assets									267
Beasley Transatcion - CBS Radio Merger | Total Tangible Property Member [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain] | Assets Acquired Member [Member]
Purchase price allocation [Abstract]
Total tangible assets									667
Beasley Transatcion - CBS Radio Merger | Total Tangible Property Member [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain] | Assets Disposed Member [Member]
Purchase price allocation [Abstract]
Total tangible assets									807
Beasley Transatcion - CBS Radio Merger | Radio Broadcasting Licences [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain] | Assets Acquired Member [Member]
Purchase price allocation [Abstract]
Total intangible assets									35,944
Beasley Transatcion - CBS Radio Merger | Radio Broadcasting Licences [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain] | Assets Disposed Member [Member]
Purchase price allocation [Abstract]
Total intangible assets									35,944
Beasley Transatcion - CBS Radio Merger | Goodwill [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain] | Assets Acquired Member [Member]
Purchase price allocation [Abstract]
Total intangible assets									289
Beasley Transatcion - CBS Radio Merger | Goodwill [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain] | Assets Disposed Member [Member]
Purchase price allocation [Abstract]
Total intangible assets									$ 11,882
i Heart Media Transaction - CBS Radio Merger | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Unaudited Pro Forma Summary Of Financial Information
Fair Value Inputs Long Term Revenue Growth Rate									1.00%
Discount Rates									9.00%
i Heart Media Transaction - CBS Radio Merger | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain] | Assets Acquired Member [Member]
Purchase price allocation [Abstract]
Total intangible assets									$ 63,627
Net assets acquired												71,300
i Heart Media Transaction - CBS Radio Merger | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain] | Assets Disposed Member [Member]
Purchase price allocation [Abstract]
Total intangible assets									63,151
Net assets acquired												71,300
i Heart Media Transaction - CBS Radio Merger | CurrentLiabilitiesDomain [Domain] | Unfavorable lease Liabilities Member [Member] | Assets Acquired Member [Member]
Purchase price allocation [Abstract]
Total liabilities acquired												1,301
i Heart Media Transaction - CBS Radio Merger | CurrentLiabilitiesDomain [Domain] | Unfavorable lease Liabilities Member [Member] | Assets Disposed Member [Member]
Purchase price allocation [Abstract]
Total liabilities acquired												0
i Heart Media Transaction - CBS Radio Merger | CurrentLiabilitiesDomain [Domain] | Deferred Tax Liability Member [Member] | Assets Acquired Member [Member]
Purchase price allocation [Abstract]
Total liabilities acquired												4,751
i Heart Media Transaction - CBS Radio Merger | CurrentLiabilitiesDomain [Domain] | Deferred Tax Liability Member [Member] | Assets Disposed Member [Member]
Purchase price allocation [Abstract]
Total liabilities acquired												$ 0
i Heart Media Transaction - CBS Radio Merger | Total Tangible Property Member [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain] | Assets Acquired Member [Member]
Purchase price allocation [Abstract]
Total tangible assets									13,725
i Heart Media Transaction - CBS Radio Merger | Total Tangible Property Member [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain] | Assets Disposed Member [Member]
Purchase price allocation [Abstract]
Total tangible assets									8,149
i Heart Media Transaction - CBS Radio Merger | Radio Broadcasting Licences [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain] | Assets Acquired Member [Member]
Purchase price allocation [Abstract]
Total intangible assets									50,621
i Heart Media Transaction - CBS Radio Merger | Radio Broadcasting Licences [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain] | Assets Disposed Member [Member]
Purchase price allocation [Abstract]
Total intangible assets									56,299
i Heart Media Transaction - CBS Radio Merger | Goodwill [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain] | Assets Acquired Member [Member]
Purchase price allocation [Abstract]
Total intangible assets									11,700
i Heart Media Transaction - CBS Radio Merger | Goodwill [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain] | Assets Disposed Member [Member]
Purchase price allocation [Abstract]
Total intangible assets									6,852
i Heart Media Transaction - CBS Radio Merger | Advertiser lists and customer relationships [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain] | Assets Acquired Member [Member]
Purchase price allocation [Abstract]
Total intangible assets									1,041
i Heart Media Transaction - CBS Radio Merger | Advertiser lists and customer relationships [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain] | Assets Disposed Member [Member]
Purchase price allocation [Abstract]
Total intangible assets									0
i Heart Media Transaction - CBS Radio Merger | Acquired advertising contracts [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain] | Assets Acquired Member [Member]
Purchase price allocation [Abstract]
Total intangible assets									265
i Heart Media Transaction - CBS Radio Merger | Acquired advertising contracts [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain] | Assets Disposed Member [Member]
Purchase price allocation [Abstract]
Total intangible assets									0
EMF Sale [Member] | CurrentLiabilitiesDomain [Domain] | LongTermLiabilitiesDomain [Domain]
Unaudited Pro Forma Summary Of Financial Information
Expected gain on sale of station									2,500
ProceedsFromDivestitureOfBusinesses									$ 57,800

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