v3.26.1
Cover - shares
 6 Months Ended
Jun. 30, 2026
Aug. 13, 2026
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
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 West 25th Street  
Entity Address, Address Line Two Third Floor  
Entity Address, City or Town New York  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 10010  
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 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 Shell Company false  
Entity Central Index Key 0001784254  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q2  
Amendment Flag false  
Class A common stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   78,606,661
Class B common stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   5,413,197
Class C Common Stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   0