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Intangible Assets and Goodwill - Change in Goodwill Carrying Value (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Feb. 28, 2014
Feb. 28, 2013
Feb. 28, 2015
Goodwill [Line Items]      
Goodwill Including Goodwill Of Discontinued Operations $ 12,639emms_GoodwillIncludingGoodwillOfDiscontinuedOperations   $ 15,392emms_GoodwillIncludingGoodwillOfDiscontinuedOperations
Goodwill, Acquired During Period 61,148us-gaap_GoodwillAcquiredDuringPeriod    
Goodwill written off (58,395)us-gaap_GoodwillImpairmentLoss (400)us-gaap_GoodwillImpairmentLoss  
New York Cluster | Radio [Member]      
Goodwill [Line Items]      
Goodwill, Acquired During Period 58,395us-gaap_GoodwillAcquiredDuringPeriod
/ emms_SegmentReportingInformationBySegmentSecondaryAxis
= emms_NewYorkClusterMember
/ us-gaap_StatementBusinessSegmentsAxis
= emms_RadioMember
   
Goodwill written off (58,395)us-gaap_GoodwillImpairmentLoss
/ emms_SegmentReportingInformationBySegmentSecondaryAxis
= emms_NewYorkClusterMember
/ us-gaap_StatementBusinessSegmentsAxis
= emms_RadioMember
   
Indianapolis Cluster | Radio [Member]      
Goodwill [Line Items]      
Goodwill Including Goodwill Of Discontinued Operations 265emms_GoodwillIncludingGoodwillOfDiscontinuedOperations
/ emms_SegmentReportingInformationBySegmentSecondaryAxis
= emms_IndianapolisClusterMember
/ us-gaap_StatementBusinessSegmentsAxis
= emms_RadioMember
  265emms_GoodwillIncludingGoodwillOfDiscontinuedOperations
/ emms_SegmentReportingInformationBySegmentSecondaryAxis
= emms_IndianapolisClusterMember
/ us-gaap_StatementBusinessSegmentsAxis
= emms_RadioMember
Austin Cluster | Radio [Member]      
Goodwill [Line Items]      
Goodwill Including Goodwill Of Discontinued Operations 4,338emms_GoodwillIncludingGoodwillOfDiscontinuedOperations
/ emms_SegmentReportingInformationBySegmentSecondaryAxis
= emms_AustinClusterMember
/ us-gaap_StatementBusinessSegmentsAxis
= emms_RadioMember
  4,338emms_GoodwillIncludingGoodwillOfDiscontinuedOperations
/ emms_SegmentReportingInformationBySegmentSecondaryAxis
= emms_AustinClusterMember
/ us-gaap_StatementBusinessSegmentsAxis
= emms_RadioMember
Goodwill, Acquired During Period       
Texas Monthly | Publishing      
Goodwill [Line Items]      
Goodwill Including Goodwill Of Discontinued Operations 8,036emms_GoodwillIncludingGoodwillOfDiscontinuedOperations
/ emms_SegmentReportingInformationBySegmentSecondaryAxis
= emms_TexasMember
/ us-gaap_StatementBusinessSegmentsAxis
= emms_PublishingMember
  8,036emms_GoodwillIncludingGoodwillOfDiscontinuedOperations
/ emms_SegmentReportingInformationBySegmentSecondaryAxis
= emms_TexasMember
/ us-gaap_StatementBusinessSegmentsAxis
= emms_PublishingMember
Digonex | Corporate and Emerging Technologies      
Goodwill [Line Items]      
Goodwill Including Goodwill Of Discontinued Operations     2,753emms_GoodwillIncludingGoodwillOfDiscontinuedOperations
/ emms_SegmentReportingInformationBySegmentSecondaryAxis
= emms_DigonexMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
Goodwill, Acquired During Period $ 2,753us-gaap_GoodwillAcquiredDuringPeriod
/ emms_SegmentReportingInformationBySegmentSecondaryAxis
= emms_DigonexMember
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember