Property and Equipment - Property and Equipment (Detail) (USD $)
|
12 Months Ended |
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Property, Plant and Equipment [Line Items] |
|
|
Property and equipment excluding land gross |
$ 242,100,000evc_PropertyPlantAndEquipmentExcludingLandGross |
$ 234,700,000evc_PropertyPlantAndEquipmentExcludingLandGross |
Less accumulated depreciation |
193,532,000us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment |
184,084,000us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment |
Property and equipment excluding land, net |
48,600,000evc_PropertyPlantAndEquipmentExcludingLandNet |
50,600,000evc_PropertyPlantAndEquipmentExcludingLandNet |
Land |
8,200,000us-gaap_Land |
8,200,000us-gaap_Land |
Property and equipment, total |
56,784,000us-gaap_PropertyPlantAndEquipmentNet |
58,765,000us-gaap_PropertyPlantAndEquipmentNet |
Buildings |
|
|
Property, Plant and Equipment [Line Items] |
|
|
Property and equipment excluding land gross |
18,600,000evc_PropertyPlantAndEquipmentExcludingLandGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_BuildingMember |
18,600,000evc_PropertyPlantAndEquipmentExcludingLandGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_BuildingMember |
Property and equipment, Estimated useful life |
39 years |
|
Construction in progress |
|
|
Property, Plant and Equipment [Line Items] |
|
|
Property and equipment excluding land gross |
2,600,000evc_PropertyPlantAndEquipmentExcludingLandGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_ConstructionInProgressMember |
2,800,000evc_PropertyPlantAndEquipmentExcludingLandGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_ConstructionInProgressMember |
Transmission, studio and other broadcast equipment |
|
|
Property, Plant and Equipment [Line Items] |
|
|
Property and equipment excluding land gross |
162,500,000evc_PropertyPlantAndEquipmentExcludingLandGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = evc_TransmissionStudioAndOtherBroadcastEquipmentMember |
159,900,000evc_PropertyPlantAndEquipmentExcludingLandGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = evc_TransmissionStudioAndOtherBroadcastEquipmentMember |
Transmission, studio and other broadcast equipment | Minimum |
|
|
Property, Plant and Equipment [Line Items] |
|
|
Property and equipment, Estimated useful life |
5 years |
|
Transmission, studio and other broadcast equipment | Maximum |
|
|
Property, Plant and Equipment [Line Items] |
|
|
Property and equipment, Estimated useful life |
15 years |
|
Office and computer equipment |
|
|
Property, Plant and Equipment [Line Items] |
|
|
Property and equipment excluding land gross |
28,700,000evc_PropertyPlantAndEquipmentExcludingLandGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = evc_OfficeAndComputerEquipmentMember |
24,200,000evc_PropertyPlantAndEquipmentExcludingLandGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = evc_OfficeAndComputerEquipmentMember |
Office and computer equipment | Minimum |
|
|
Property, Plant and Equipment [Line Items] |
|
|
Property and equipment, Estimated useful life |
3 years |
|
Office and computer equipment | Maximum |
|
|
Property, Plant and Equipment [Line Items] |
|
|
Property and equipment, Estimated useful life |
7 years |
|
Transportation equipment |
|
|
Property, Plant and Equipment [Line Items] |
|
|
Property and equipment excluding land gross |
6,400,000evc_PropertyPlantAndEquipmentExcludingLandGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_TransportationEquipmentMember |
6,500,000evc_PropertyPlantAndEquipmentExcludingLandGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_TransportationEquipmentMember |
Property and equipment, Estimated useful life |
5 years |
|
Leasehold improvements and land improvements |
|
|
Property, Plant and Equipment [Line Items] |
|
|
Property and equipment excluding land gross |
$ 23,300,000evc_PropertyPlantAndEquipmentExcludingLandGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = evc_LeaseholdAndLandImprovementsMember |
$ 22,700,000evc_PropertyPlantAndEquipmentExcludingLandGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = evc_LeaseholdAndLandImprovementsMember |
Property and equipment, Estimated useful life |
Lesser of lease life or useful life |
|