Segment Information - Separate Financial Data for Each of Company's Operating Segment (Detail) - USD ($)	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Net revenue	$ 69,241,000	$ 74,329,000	$ 133,921,000	$ 141,167,000
Direct operating expenses	29,655,000	31,117,000	58,585,000	62,150,000
Selling, general and administrative expenses	13,545,000	12,673,000	27,359,000	25,967,000
Depreciation and amortization	4,306,000	4,019,000	8,222,000	7,958,000
Operating income (loss)	(11,579,000)	10,073,000	(6,590,000)	9,754,000
Corporate expenses	6,501,000	6,266,000	13,395,000	12,241,000
Change in fair value contingent consideration	(2,735,000)	(913,000)	(2,376,000)	1,187,000
Impairment charge	22,368,000		22,368,000		$ 0
Foreign currency (gain) loss	(82,000)	(17,000)	50,000	196,000
Other operating (gain) loss	(1,597,000)	(273,000)	(3,593,000)	(295,000)
Interest expense	(3,554,000)	(4,001,000)	(7,044,000)	(7,399,000)
Interest income	857,000	1,039,000	1,776,000	1,952,000
Dividend income	251,000	417,000	506,000	545,000
Income (loss) before income taxes	(14,025,000)	7,528,000	(11,352,000)	4,852,000
Capital expenditures	7,981,000	2,204,000	14,823,000	4,432,000
Total assets	$ 699,579,000		$ 699,579,000		690,409,000
Percentage change in net revenue	(7.00%)		(5.00%)
Percentage change in direct operating expenses	(5.00%)		(6.00%)
Percentage change in selling, general and administrative expenses	7.00%		5.00%
Percentage change in depreciation and amortization	7.00%		3.00%
Percentage change in segment operating profit (loss)	(15.00%)		1.00%
Percentage change in corporate expenses	4.00%		9.00%
Change in fair value contingent consideration	200.00%
Percentage change in foreign currency (gain) loss	382.00%		(74.00%)
Percentage change in other operating (gain) loss	485.00%		1118.00%
Percentage change in interest expense	(11.00%)		(5.00%)
Percentage change in interest income	(18.00%)		(9.00%)
Percentage change in dividend income	(40.00%)		(7.00%)
Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ 12,876,000	15,136,000	$ 23,254,000	23,083,000
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Corporate expenses	6,501,000	6,266,000	13,395,000	12,241,000
Television
Segment Reporting Information [Line Items]
Net revenue	38,071,000	36,531,000	76,324,000	71,022,000
Direct operating expenses	15,157,000	15,038,000	30,084,000	30,588,000
Selling, general and administrative expenses	5,634,000	5,551,000	11,448,000	11,523,000
Depreciation and amortization	2,562,000	2,277,000	4,822,000	4,481,000
Capital expenditures	7,661,000	1,942,000	14,002,000	4,023,000
Total assets	$ 506,267,000		$ 506,267,000		487,929,000
Percentage change in net revenue	4.00%		7.00%
Percentage change in direct operating expenses	1.00%		(2.00%)
Percentage change in selling, general and administrative expenses	1.00%		(1.00%)
Percentage change in depreciation and amortization	13.00%		8.00%
Percentage change in segment operating profit (loss)	8.00%		23.00%
Television \| Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ 14,718,000	13,665,000	$ 29,970,000	24,430,000
Radio
Segment Reporting Information [Line Items]
Net revenue	14,366,000	17,240,000	26,321,000	31,343,000
Direct operating expenses	9,528,000	10,935,000	19,036,000	21,609,000
Selling, general and administrative expenses	4,396,000	4,502,000	9,171,000	9,108,000
Depreciation and amortization	571,000	621,000	903,000	1,240,000
Capital expenditures	199,000	81,000	581,000	162,000
Total assets	$ 138,577,000		$ 138,577,000		121,020,000
Percentage change in net revenue	(17.00%)		(16.00%)
Percentage change in direct operating expenses	(13.00%)		(12.00%)
Percentage change in selling, general and administrative expenses	(2.00%)		1.00%
Percentage change in depreciation and amortization	(8.00%)		(27.00%)
Percentage change in segment operating profit (loss)			354.00%
Radio \| Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ (129,000)	1,182,000	$ (2,789,000)	(614,000)
Digital
Segment Reporting Information [Line Items]
Net revenue	16,804,000	20,558,000	31,276,000	38,802,000
Cost of revenue	8,859,000	11,384,000	16,501,000	22,009,000
Direct operating expenses	4,970,000	5,144,000	9,465,000	9,953,000
Selling, general and administrative expenses	3,515,000	2,620,000	6,740,000	5,336,000
Depreciation and amortization	1,173,000	1,121,000	2,497,000	2,237,000
Impairment charge	22,400,000		22,368,000
Capital expenditures	121,000	181,000	240,000	247,000
Total assets	$ 54,735,000		$ 54,735,000		$ 81,460,000
Percentage change in net revenue	(18.00%)		(19.00%)
Percentage change in cost of revenue	(22.00%)		(25.00%)
Percentage change in direct operating expenses	(3.00%)		(5.00%)
Percentage change in selling, general and administrative expenses	34.00%		26.00%
Percentage change in depreciation and amortization	5.00%		12.00%
Percentage change in segment operating profit (loss)			436.00%
Digital \| Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ (1,713,000)	$ 289,000	$ (3,927,000)	$ (733,000)

Capital additions including non cash additions.

No definition available.

Name:	evc_CapitalAdditionsIncludingNonCashAdditions
Namespace Prefix:	evc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Corporate expenses.

+ References

No definition available.

+ Details

Name:	evc_CorporateExpenses
Namespace Prefix:	evc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage change in cost of revenue.

+ References

No definition available.

+ Details

Name:	evc_PercentageChangeInCostOfRevenue
Namespace Prefix:	evc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage change in depreciation and amortization.

+ References

No definition available.

+ Details

Name:	evc_PercentageChangeInDepreciationAndAmortization
Namespace Prefix:	evc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage change in direct operating costs.

+ References

No definition available.

+ Details

Name:	evc_PercentageChangeInDirectOperatingCosts
Namespace Prefix:	evc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage change in dividend income.

+ References

No definition available.

+ Details

Name:	evc_PercentageChangeInDividendIncome
Namespace Prefix:	evc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage change in expenses.

+ References

No definition available.

+ Details

Name:	evc_PercentageChangeInExpenses
Namespace Prefix:	evc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage change in fair value of contingent consideration.

+ References

No definition available.

+ Details

Name:	evc_PercentageChangeInFairValueOfContingentConsideration
Namespace Prefix:	evc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage change in foreign currency exchange gain loss.

+ References

No definition available.

+ Details

Name:	evc_PercentageChangeInForeignCurrencyExchangeGainLoss
Namespace Prefix:	evc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage change in interest expense.

+ References

No definition available.

+ Details

Name:	evc_PercentageChangeInInterestExpense
Namespace Prefix:	evc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage change in interest income.

+ References

No definition available.

+ Details

Name:	evc_PercentageChangeInInterestIncome
Namespace Prefix:	evc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage change in net revenue.

+ References

No definition available.

+ Details

Name:	evc_PercentageChangeInNetRevenue
Namespace Prefix:	evc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage change in operating profit loss.

+ References

No definition available.

+ Details

Name:	evc_PercentageChangeInOperatingProfitLoss
Namespace Prefix:	evc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage change in other operating (gain) loss.

+ References

No definition available.

+ Details

Name:	evc_PercentageChangeInOtherOperatingGainLoss
Namespace Prefix:	evc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage change in selling, general and administrative expenses.

+ References

No definition available.

+ Details

Name:	evc_PercentageChangeInSellingGeneralAndAdministrativeExpense
Namespace Prefix:	evc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(11))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(12))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

Name:	us-gaap_Assets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7008-128479

+ Details

Name:	us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

+ References

+ Details

Name:	us-gaap_CostOfGoodsAndServicesSold
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

+ Details

Name:	us-gaap_DepreciationAndAmortization
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The aggregate direct operating costs incurred during the reporting period.

+ References

+ Details

Name:	us-gaap_DirectOperatingCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6450222&loc=d3e30840-110895

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 20
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109240200&loc=d3e30700-110894

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=109240200&loc=d3e30690-110894

+ Details

Name:	us-gaap_ForeignCurrencyTransactionGainLossBeforeTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13854-109267

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13777-109266

+ Details

Name:	us-gaap_GoodwillImpairmentLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 940
-SubTopic 20
-Section 25
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=68072869&loc=d3e41242-110953

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(10))
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(8))
-URI http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(15))
-URI http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260

+ Details

Name:	us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of the cost of borrowed funds accounted for as interest expense.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (210.5-03(11))
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.9)
-URI http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260

+ Details

Name:	us-gaap_InterestExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of dividend income on nonoperating securities.

+ References

+ Details

Name:	us-gaap_InvestmentIncomeDividend
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.7(b))
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

+ Details

Name:	us-gaap_InvestmentIncomeInterest
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The net result for the period of deducting operating expenses from operating revenues.

+ References

No definition available.

+ Details

Name:	us-gaap_OperatingIncomeLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The total amount of other operating cost and expense items that are associated with the entity's normal revenue producing operation.

+ References

+ Details

Name:	us-gaap_OtherCostAndExpenseOperating
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045

+ Details

Name:	us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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

Name:	us-gaap_SegmentReportingInformationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-SubTopic 10
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=68048583&loc=d3e3636-108311

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.4)
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

+ Details

Name:	us-gaap_SellingGeneralAndAdministrativeExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	srt_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ConsolidationItemsAxis=us-gaap_CorporateNonSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=evc_TelevisionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=evc_RadioMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=evc_DigitalMediaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: