Salem Media Group, Inc. Quarterly report pursuant to Section 13 or 15(d)

Broadcast Licenses - Fair Value Measurement Inputs and Valuation Techniques for Broadcast Licenses (Detail)	Jun. 30, 2022 Accounting	Dec. 31, 2021 Accounting
Risk-adjusted Discount Rate [Member] \| Broadcast Licenses [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Intangible asset measurement input percentage	9.5	8.5
Minimum [Member] \| Operating Profit Margin [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Intangible asset measurement input percentage	(7.8)	(1.4)
Minimum [Member] \| Operating Profit Margin [Member] \| Broadcast Licenses [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Intangible asset measurement input percentage	3.9	3.9
Minimum [Member] \| Long-term Revenue Growth Rate [Member] \| Broadcast Licenses [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Intangible asset measurement input percentage	0.4	0.4
Maximum [Member] \| Operating Profit Margin [Member] \| Broadcast Licenses [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Intangible asset measurement input percentage	30.9	30.9
Maximum [Member] \| Long-term Revenue Growth Rate [Member] \| Broadcast Licenses [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Intangible asset measurement input percentage	0.7	0.7