Annual report pursuant to Section 13 and 15(d)

Related Party Transactions - Additional Information (Detail)

v3.22.0.1
Related Party Transactions - Additional Information (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Description of related party transaction The policy applies to any transaction or series of transactions in which Salem is a participant, the amount involved exceeds $120,000 and a Related Party (as defined in Item 404(a) of SEC Regulation S-K) has a direct or indirect material interest, excluding, among other things, compensation arrangements with respect to employment and Board membership. Related Parties includes our directors, executive officers, nominees to become a director, any person beneficially owning more than 5% of any class of our stock, immediate family members of any of the foregoing, and any entity in which any of the foregoing persons is employed or is a general partner or principal or in which the person has a 10% or greater beneficial ownership interest.  
Net proceeds from life insurance policies to Salem $ 0 $ 2,363,000
Related party annual payments for insurance premiums   200,000
Edward G Atsinger III Chief Executive Officer And Director [Member]    
Rental payments for aircraft 26,000 298,000
Related party transaction, amounts of transaction 26,000  
Related party prepaid deposit   100,000
Chairman And Chief Executive Officer [Member] | Land and Building [Member]    
Operating leases, rent expense 1,600,000 1,500,000
Know the Truth [Member]    
Related party transaction, other revenues from transactions with related party 400,000 600,000
Accounts receivable, related parties $ 800,000 1,000,000.0
Other Than Compensation Arrangements [Member]    
Description of related party transaction we have been a party in which the amount involved exceeds $120,000 annually and in which any of our then directors, executive officers or holders of more than 5% of any class of our stock at the time of such transaction, or any members of their immediate family, or is a general partner or principal or in which the person has a 10% or greater beneficial ownership interest, had or will have a direct or indirect material interest.  
Chairman Emeritus [Member] | Trust [Member]    
Operating leases, rent expense $ 200,000 200,000
Split Dollar Life Insurance [Member]    
Net proceeds from life insurance policies to Salem   2,400,000
Split Dollar Life Insurance [Member] | Executive Chairman [Member]    
Related party transaction, amounts of transaction   300,000
Split Dollar Life Insurance [Member] | Chairman Emeritus [Member]    
Related party transaction, amounts of transaction   $ 300,000