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, Payment

+ References

No definition available.

+ Details

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

- Definition

Long-term Purchase Commitment, Period

+ References

No definition available.

+ Details

Name:	emms_LongtermPurchaseCommitmentPeriod
Namespace Prefix:	emms_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Long-term Purchase Commitment, Period for Payment to be Expensed

+ References

No definition available.

+ Details

Name:	emms_LongtermPurchaseCommitmentPeriodforPaymenttobeExpensed
Namespace Prefix:	emms_
Data Type:	xbrli:durationItemType
Balance Type:	na
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

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=7880789&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

Significant Events - Additional Information (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended			0 Months Ended
	Aug. 09, 2013	Aug. 09, 2013 NextRadio LLC	Nov. 30, 2013 NextRadio LLC	Aug. 09, 2013 Emmis	Aug. 09, 2013 Minimum NextRadio LLC wireless_device	Dec. 12, 2013 Subsequent Event [Member] NextRadio LLC
Long-term Purchase Commitment [Line Items]
Minimum number of devices with pre-loaded smartphone application					30,000,000
Agreement amount		$ 15
Period of agreement		3 years
Call option, maximum ownership interest allowed to be exercised by radio operator	30.00%
Agreement, quarterly payment remitted		3.75		0.80		2.20
Period for payment to be expensed	3 months
Variable interest entity, consolidated, carrying amount of assets			2.1
Variable interest entity, liabilities			$ 2.1