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

Summary of Changes in Present Value of Acquisition Related Contingent Earn-Out Consideration (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014
Business Acquisition, Contingent Consideration [Line Items]
Beginning Balance as of January 1, 2014	$ 616
Acquisitions	2,047
Accretion of acquisition-related contingent consideration	60
Change in fair value of contingent earn-out consideration	127
Payments
Ending Balance as of March 31, 2014	2,850
Short Term Accrued Expenses
Business Acquisition, Contingent Consideration [Line Items]
Beginning Balance as of January 1, 2014	329
Acquisitions	692
Accretion of acquisition-related contingent consideration	23
Change in fair value of contingent earn-out consideration	104
Payments
Ending Balance as of March 31, 2014	1,148
Long Term Other Liabilities
Business Acquisition, Contingent Consideration [Line Items]
Beginning Balance as of January 1, 2014	287
Acquisitions	1,355
Accretion of acquisition-related contingent consideration	37
Change in fair value of contingent earn-out consideration	23
Payments
Ending Balance as of March 31, 2014	$ 1,702