Related Party Transactions (Details) $ in Millions	3 Months Ended
Mar. 31, 2021 USD ($) item	Mar. 31, 2020 USD ($)	Dec. 31, 2020 USD ($)
MVS Multivision Digital Sde RLde CV and Affiliates \| Satellite and Support Services Agreement \| Cinelatino
Related party transactions
Number of channel feeds delivered through satellite \| item	2
Total expense	$ 0.6	$ 0.6
Due to related parties	0.2		$ 0.6
MVS Multivision Digital Sde RLde CV and Affiliates \| Affiliation Agreement
Related party transactions
Revenue recognized from related party	0.3	0.3
Due from related parties	$ 0.2		0.3
MVS Multivision Digital Sde RLde CV and Affiliates \| Master License Agreement \| Cinelatino
Related party transactions
Distribution fee as a percentage of revenue earned	13.50%
Revenue recognized from related party	$ 0.2	0.2
Due from related parties	0.1		0.4
Director \| Consulting Agreement with Director
Related party transactions
Total expense	0.1	$ 0.1
Due to related parties	$ 0.0		$ 0.0

The distribution fee as a percentage of revenue earned that is owed to related party under agreement.

No definition available.

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- Definition

Represents the number of channel feeds delivered through satellite as per the agreement with related party.

+ References

No definition available.

+ Details

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- Definition

For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (d)
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-Publisher FASB
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-Publisher FASB
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-Subparagraph (SX 210.4-08.(k)(1))
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-Paragraph 1
-Subparagraph (SX 210.7-03.3)
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

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- Definition

Carrying amount as of the balance sheet date of obligations due all related parties.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

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-Publisher FASB
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-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

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Balance Type:	credit
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- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	debit
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 220
-Section S99
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- Details

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- Details

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- Details

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- Details

Name:	us-gaap_RelatedPartyTransactionAxis=hmtv_MasterLicenseAgreementMember
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- Details

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- Details

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