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Subsequent Events - Additional Information (Details) - Consulting Agreement - Subsequent Event - USD ($) | Oct. 01, 2025 | Oct. 31, 2025
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Subsequent Event [Line Items] |  |
Agreement date | Oct. 01, 2025 |
Payment for salary | $ 20,000 |
Minimum |  |
Subsequent Event [Line Items] |  |
Experience in digital technologies and advertising |  | 25 years

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- Definition Experience in digital technologies and advertising. + References No definition available. + Details
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Namespace Prefix: | evc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

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- Definition Line of credit facility, agreement date. + References No definition available. + Details
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Namespace Prefix: | evc_
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Balance Type: | na
Period Type: | duration

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- Definition Payment for salary. + References No definition available. + Details
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Balance Type: | credit
Period Type: | duration

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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481674/830-30-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 855 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483399/855-10-50-2 + Details
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Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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