Leases - Summary of Annual Minimum Lease Payments of Operating Lease Liabilities (Details) $ in Thousands	Aug. 31, 2019 USD ($)
Year ending February 28 (29),
Remainder of 2020	$ 2,576
2021	4,990
2022	4,921
2023	4,839
2024	3,449
After 2024	13,705
Total lease payments	34,480
Less imputed interest	7,634
Total recorded lease liabilities	26,846
Less lease liabilities classified as held for sale	(16,421)
Total recorded lease liabilities excluding amounts classified as held for sale	$ 10,425

Lessee operating lease liability classified as held for sale.

No definition available.

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Balance Type:	credit
Period Type:	instant

- Definition

Lessee operating lease liability excluding amounts classified as held for sale.

+ References

No definition available.

+ Details

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Namespace Prefix:	emms_
Data Type:	xbrli:monetaryItemType
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- Definition

Lessee operating lease liability, imputed interest.

+ References

No definition available.

+ Details

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Namespace Prefix:	emms_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Lessee operating lease liability payments.

+ References

No definition available.

+ Details

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Namespace Prefix:	emms_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's undiscounted obligation for lease payments for operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's undiscounted obligation for lease payments for operating lease, due after fifth fiscal year following latest fiscal year.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's undiscounted obligation for lease payments for operating lease, due in next fiscal year following latest fiscal year.

+ References

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's undiscounted obligation for lease payments for operating lease, due in fifth fiscal year following latest fiscal year.

+ References

+ Details

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Period Type:	instant

- Definition

Amount of lessee's undiscounted obligation for lease payments for operating lease, due in fourth fiscal year following latest fiscal year.

+ References

+ Details

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

- Definition

Amount of lessee's undiscounted obligation for lease payments for operating lease, due in third fiscal year following latest fiscal year.

+ References

+ Details

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

- Definition

Amount of lessee's undiscounted obligation for lease payments for operating lease, due in second fiscal year following latest fiscal year.

+ References

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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