Annual report pursuant to Section 13 and 15(d)

Cover Page

Cover Page - USD ($)
12 Months Ended
Dec. 31, 2021
Feb. 25, 2022
Jun. 30, 2021
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2021    
Document Fiscal Year Focus 2021    
Trading Symbol SALM    
Document Fiscal Period Focus FY    
Entity Registrant Name SALEM MEDIA GROUP, INC. /DE/    
Entity Central Index Key 0001050606    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer No    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Filer Category Non-accelerated Filer    
Entity Shell Company false    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Interactive Data Current Yes    
Security Exchange Name NASDAQ    
Title of 12(b) Security Class A Common Stock, $0.01 par value per share    
Entity File Number 000-26497    
Entity Tax Identification Number 77-0121400    
Entity Address, Address Line One 6400 NORTH BELT LINE ROAD    
Entity Address, City or Town IRVING    
Entity Address, State or Province TX    
Entity Address, Postal Zip Code 75063    
City Area Code 469    
Local Phone Number 586-2280    
Document Annual Report true    
Document Transition Report false    
Entity Incorporation, State or Country Code DE    
Entity Public Float     $ 37,389,107
ICFR Auditor Attestation Flag false    
Auditor Name Moss Adams LLP    
Auditor Firm ID 659    
Auditor Location Los Angeles, California    
Common Class A [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   21,605,324  
Common Class B [Member]      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   5,553,696