Salem Media Group, Inc. Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Goodwill - Fair Value Measurement Inputs and Valuation Techniques For Goodwill (Detail)

Goodwill - Fair Value Measurement Inputs and Valuation Techniques For Goodwill (Detail)	Dec. 31, 2021	Dec. 31, 2020
Measurement Input Risk Adjusted Discount Rate [Member] \| Digital [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Intangible asset measurement input percentage	0.095	0.095
Measurement Input Risk Adjusted Discount Rate [Member] \| Publishing [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Intangible asset measurement input percentage	0.095	0.095
Measurement Input Risk Adjusted Discount Rate [Member] \| Radio Clusters [Member] \| Broadcast Networks Enterprise Valuations [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Intangible asset measurement input percentage	0.085	0.085
Measurement Input, Long-term Revenue Growth Rate [Member] \| Digital [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Intangible asset measurement input percentage	0.005	0.010
Measurement Input, Long-term Revenue Growth Rate [Member] \| Publishing [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Intangible asset measurement input percentage	0.005
Measurement Input, Long-term Revenue Growth Rate [Member] \| Radio Clusters [Member] \| Broadcast Networks Enterprise Valuations [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Intangible asset measurement input percentage	0.004
Minimum [Member] \| Measurement Input Operating Profit Margin [Member] \| Digital [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Intangible asset measurement input percentage	0.253	0.034
Minimum [Member] \| Measurement Input Operating Profit Margin [Member] \| Publishing [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Intangible asset measurement input percentage	0.024	0.015
Minimum [Member] \| Measurement Input Operating Profit Margin [Member] \| Radio Clusters [Member] \| Broadcast Networks Enterprise Valuations [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Intangible asset measurement input percentage	0.014	0.114
Minimum [Member] \| Measurement Input, Long-term Revenue Growth Rate [Member] \| Publishing [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Intangible asset measurement input percentage		0.005
Minimum [Member] \| Measurement Input, Long-term Revenue Growth Rate [Member] \| Radio Clusters [Member] \| Broadcast Networks Enterprise Valuations [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Intangible asset measurement input percentage		0.005
Maximum [Member] \| Measurement Input Operating Profit Margin [Member] \| Digital [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Intangible asset measurement input percentage	0.285	0.068
Maximum [Member] \| Measurement Input Operating Profit Margin [Member] \| Publishing [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Intangible asset measurement input percentage	0.052	0.044
Maximum [Member] \| Measurement Input Operating Profit Margin [Member] \| Radio Clusters [Member] \| Broadcast Networks Enterprise Valuations [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Intangible asset measurement input percentage	0.150	0.415
Maximum [Member] \| Measurement Input, Long-term Revenue Growth Rate [Member] \| Publishing [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Intangible asset measurement input percentage		0.010
Maximum [Member] \| Measurement Input, Long-term Revenue Growth Rate [Member] \| Radio Clusters [Member] \| Broadcast Networks Enterprise Valuations [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Intangible asset measurement input percentage		0.008