Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net income (loss)	$ 27,122us-gaap_NetIncomeLoss	$ 133,825us-gaap_NetIncomeLoss	$ 13,601us-gaap_NetIncomeLoss
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	14,663us-gaap_DepreciationAndAmortization	14,953us-gaap_DepreciationAndAmortization	16,426us-gaap_DepreciationAndAmortization
Impairment charge	735us-gaap_AssetImpairmentCharges
Deferred income taxes	17,585us-gaap_DeferredIncomeTaxExpenseBenefit	(134,975)us-gaap_DeferredIncomeTaxExpenseBenefit	6,477us-gaap_DeferredIncomeTaxExpenseBenefit
Amortization of debt issuance costs	820us-gaap_AmortizationOfFinancingCosts	1,647us-gaap_AmortizationOfFinancingCosts	2,284us-gaap_AmortizationOfFinancingCosts
Amortization of syndication contracts	440evc_AmortizationOfSyndicationContracts	587evc_AmortizationOfSyndicationContracts	707evc_AmortizationOfSyndicationContracts
Payments on syndication contracts	(578)evc_PaymentsOnSyndicationContracts	(1,258)evc_PaymentsOnSyndicationContracts	(1,698)evc_PaymentsOnSyndicationContracts
Non-cash stock-based compensation	4,351us-gaap_ShareBasedCompensation	4,771us-gaap_ShareBasedCompensation	2,651us-gaap_ShareBasedCompensation
(Gain) loss on debt extinguishment	246	29,675	3,743
Changes in assets and liabilities:
(Increase) decrease in accounts receivable	(6,128)	(8,706)	(3,740)
(Increase) decrease in prepaid expenses and other assets	(1,183)	(509)	321
Increase (decrease) in accounts payable, accrued expenses and other liabilities	(3,661)	(7,255)	(740)
Net cash provided by (used in) operating activities	54,412	32,755	40,032
Cash flows from investing activities:
Purchases of property and equipment and intangibles	(8,609)	(10,174)	(9,856)
Purchase of a business, net of cash acquired	(15,048)
Net cash provided by (used in) investing activities	(23,657)	(10,174)	(9,856)
Cash flows from financing activities:
Proceeds from stock option exercises	1,841	2,806	23
Payments on long-term debt	(23,750)us-gaap_RepaymentsOfLongTermDebt	(375,984)us-gaap_RepaymentsOfLongTermDebt	(61,800)us-gaap_RepaymentsOfLongTermDebt
Dividends paid	(8,865)us-gaap_PaymentsOfDividends	(11,014)us-gaap_PaymentsOfDividends	(10,313)us-gaap_PaymentsOfDividends
Repurchase of Class A common stock	(12,543)
Proceeds from borrowings on long-term debt		375,000	20,000
Payments of capitalized debt offering and issuance costs		(5,697)us-gaap_PaymentsOfDebtIssuanceCosts	(675)us-gaap_PaymentsOfDebtIssuanceCosts
Net cash provided by (used in) financing activities	(43,317)	(14,889)	(52,765)
Net increase (decrease) in cash and cash equivalents	(12,562)	7,692	(22,589)
Cash and cash equivalents:
Beginning	43,822	36,130	58,719
Ending	31,260	43,822	36,130
Cash payments for:
Interest	15,265us-gaap_InterestPaidNet	32,586us-gaap_InterestPaidNet	35,422us-gaap_InterestPaidNet
Income taxes	$ 859us-gaap_IncomeTaxesPaidNet	$ 838us-gaap_IncomeTaxesPaidNet	$ (365)us-gaap_IncomeTaxesPaidNet

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