XML 47 R43.htm IDEA: XBRL DOCUMENT v2.4.1.9
Nature of Business - Additional Information (Detail)
 12 Months Ended
Dec. 31, 2014
Segment
Segment Reporting Information [Line Items]  
Number of reportable segments 3us-gaap_NumberOfReportableSegments
Television  
Segment Reporting Information [Line Items]  
Segment operations, number of television or radio stations operated 58evc_NumberOfStationsOwned
/ us-gaap_StatementBusinessSegmentsAxis
= evc_TelevisionMember
Radio  
Segment Reporting Information [Line Items]  
Segment operations, number of television or radio stations operated 49evc_NumberOfStationsOwned
/ us-gaap_StatementBusinessSegmentsAxis
= evc_RadioMember
Radio operations stations, number of location 19evc_SegmentOperationsNumberOfLocation
/ us-gaap_StatementBusinessSegmentsAxis
= evc_RadioMember
Advertisements and Syndicate Radio Programming  
Segment Reporting Information [Line Items]  
Segment operations, number of television or radio stations operated 350evc_NumberOfStationsOwned
/ us-gaap_StatementBusinessSegmentsAxis
= evc_AdvertisementsAndSyndicateRadioProgrammingMember