v3.25.2

Document And Entity Information	Sep. 17, 2025
Document Information Line Items
Entity Central Index Key	0002075816
Document Type	S-1/A
Entity Registrant Name	Emmis Acquisition Corp.
Entity Incorporation, State or Country Code	E9
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Amendment Description	Emmis Acquisition Corp. is filing this Amendment No. 4 to its Registration Statement on Form S-1 (File No. 333-288530) (the “Registration Statement”) as an exhibits-only filing to include Exhibits 3.2, 5.1 and 5.2. Accordingly, this amendment consists only of the facing page, this explanatory note, Item 16(a) of Part II of the Registration Statement, the signature page to the Registration Statement and the filed exhibits. The remainder of the Registration Statement is unchanged and has therefore been omitted.
Amendment Flag	true

Description of changes contained within amended document.

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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.

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The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

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A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 12
-Subsection b-2

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- Definition

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Exchange Act
-Number 240
-Section 12
-Subsection b-2

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Indicate if an emerging growth company has elected not to use the extended transition period for complying with any new or revised financial accounting standards.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Securities Act
-Number 7A
-Section B
-Subsection 2

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Indicate whether the registrant is one of the following: Large Accelerated Filer, Accelerated Filer, Non-accelerated Filer. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Exchange Act
-Number 240
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-Subsection b-2

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Number 240
-Section 12
-Subsection b-2

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Section 12
-Subsection b-2

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Emmis Acquisition Corp. S-1/A