v3.10.0.1
Document And Entity Information - shares
9 Months Ended
Sep. 30, 2018
Oct. 29, 2018
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2018  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q3  
Entity Registrant Name URBAN ONE, INC.  
Entity Central Index Key 0001041657  
Current Fiscal Year End Date --12-31  
Entity Filer Category Accelerated Filer  
Trading Symbol UONE  
Entity Emerging Growth Company false  
Entity Small Business true  
Common Class A [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   1,637,472
Common Class B [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   2,861,843
Common Class C [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   2,928,906
Common Class D [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   39,572,435