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

Fair Value Measurements - Summary of Fair Value of Financial Assets and Liabilities (Detail) $ in Thousands	Mar. 31, 2022 USD ($)
Other Indefinite Lived Intangible Assets [Member]
Liabilities:
Estimated fair value of contingent earn-out consideration included in accrued expenses	$ 6
Long-term debt less unamortized discount and debt issuance costs	172,405
Fair Value, Inputs, Level 1 [Member]
Liabilities:
Estimated fair value of contingent earn-out consideration included in accrued expenses	0
Fair Value, Inputs, Level 1 [Member] \| Other Indefinite Lived Intangible Assets [Member]
Liabilities:
Long-term debt less unamortized discount and debt issuance costs	0
Fair Value, Inputs, Level 2 [Member]
Liabilities:
Estimated fair value of contingent earn-out consideration included in accrued expenses	0
Fair Value, Inputs, Level 2 [Member] \| Other Indefinite Lived Intangible Assets [Member]
Liabilities:
Long-term debt less unamortized discount and debt issuance costs	179,286
Fair Value, Inputs, Level 3 [Member]
Liabilities:
Estimated fair value of contingent earn-out consideration included in accrued expenses	6
Long-term debt less unamortized discount and debt issuance costs	$ 0