v3.26.1

Cover - USD ($)	12 Months Ended
Cover - USD ($)	Dec. 31, 2025	Mar. 31, 2026	Jun. 30, 2025
Document Information [Line Items]
Document Type	10-K/A
Document Annual Report	true
Current Fiscal Year End Date	--12-31
Document Period End Date	Dec. 31, 2025
Document Transition Report	false
Entity File Number	001-39029
Entity Registrant Name	MEDIACO HOLDING INC.
Entity Incorporation, State or Country Code	IN
Entity Tax Identification Number	84-2427771
Entity Address, Address Line One	48 W 25th Street
Entity Address, Address Line Two	3rd Floor
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10011
City Area Code	212
Local Phone Number	447-1000
Title of 12(b) Security	Class A common stock, $0.01 par value
Trading Symbol	MDIA
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Ex Transition Period	false
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 13,980,999
Documents Incorporated by Reference	None in this Amendment No. 1 on Form 10-K/A.
Entity Central Index Key	0001784254
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	FY
Amendment Flag	false
Common Class A
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		76,318,634
Common Class B
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		5,413,197
Common Class C
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		0

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Mediaco Holding Inc. 10-K/A