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

Broadcast Licenses - Additional Information (Detail) $ in Thousands			3 Months Ended				9 Months Ended
	Sep. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)	Sep. 30, 2023 USD ($)	Jun. 30, 2023 MarketClusters	Mar. 31, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) MarketClusters	Sep. 30, 2022 USD ($)
Indefinite-lived Intangible Assets [Line Items]
Impairment charge			$ 35,113			$ 7,725	$ 38,376	$ 11,660
Broadcast Licenses [Member]
Indefinite-lived Intangible Assets [Line Items]
License renewable term							8 years
Percentage of fair value over carrying value benchmark for qualitative impairment analysis							50.00%
Impairment charge	$ 35,100	$ 1,100					$ 0
Number of market cluster where the carrying value exceeds fair value \| MarketClusters				2			19
Broadcast Licenses [Member] \| Bond and Pecaro [Member]
Indefinite-lived Intangible Assets [Line Items]
Impairment charge					$ 2,100
Broadcast Licenses [Member] \| Maximum [Member]
Indefinite-lived Intangible Assets [Line Items]
Percentage of fair value over carrying value benchmark for qualitative impairment analysis							50.00%
Broadcast Licenses [Member] \| Minimum [Member]
Indefinite-lived Intangible Assets [Line Items]
Percentage of fair value over carrying value benchmark for qualitative impairment analysis							50.00%