Call Option Exercised, Operator Ownership Percentage, Maximum

No definition available.

Name:	emms_CallOptionExercisedOperatorOwnershipPercentageMaximum
Namespace Prefix:	emms_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Long-term Purchase Commitment, Annual Commitment

+ References

No definition available.

+ Details

Name:	emms_LongtermPurchaseCommitmentAnnualCommitment
Namespace Prefix:	emms_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Long-Term Purchase Commitment, Expense Recognized in Period

+ References

No definition available.

+ Details

Name:	emms_LongTermPurchaseCommitmentExpenseRecognizedinPeriod
Namespace Prefix:	emms_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Number of Devices

+ References

No definition available.

+ Details

Name:	emms_NumberofDevices
Namespace Prefix:	emms_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Details

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

- Definition

Period covered by the long-term purchase commitment, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_LongtermPurchaseCommitmentPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The carrying amount of the consolidated Variable Interest Entity's assets included in the reporting entity's statement of financial position.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (bb)

-URI http://asc.fasb.org/extlink&oid=52262685&loc=d3e5710-111685

+ Details

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

- Definition

The carrying amount of the consolidated Variable Interest Entity's liabilities included in the reporting entity's statement of financial position.

+ References

+ Details

Name:	us-gaap_VariableInterestEntityConsolidatedCarryingAmountLiabilities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	dei_LegalEntityAxis=us-gaap_ParentCompanyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Other Significant Transactions - Additional Information (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended	12 Months Ended
	Aug. 09, 2013	Feb. 28, 2015	Feb. 28, 2014
Long-term Purchase Commitment [Line Items]
Call option, maximum ownership interest allowed to be exercised by radio operator	30.00%
NextRadio
Long-term Purchase Commitment [Line Items]
Period of agreement	3 years
Agreement amount	15
Variable interest entity, consolidated, carrying amount of assets		1.3
Variable interest entity, liabilities		1.3
NextRadio \| Minimum
Long-term Purchase Commitment [Line Items]
Minimum number of devices with pre-loaded smartphone application	30,000,000
Emmis
Long-term Purchase Commitment [Line Items]
Expense recognized in period		$ 0.5	$ 1.1