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

Quarterly report pursuant to Section 13 or 15(d)

Acqusitions and Recent Transactions - Additional Information (Detail)

Acqusitions and Recent Transactions - Additional Information (Detail) (USD $)	0 Months Ended	1 Months Ended			3 Months Ended			9 Months Ended		1 Months Ended	9 Months Ended			1 Months Ended	9 Months Ended															1 Months Ended
	May 30, 2013	Sep. 30, 2013	Sep. 12, 2013	Mar. 14, 2013	Sep. 30, 2013	Mar. 31, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Jun. 28, 2013 Term Loan B	Sep. 30, 2013 Term Loan B	Mar. 14, 2013 Term Loan B	Mar. 14, 2013 Revolver	Mar. 14, 2013 Terminated 95/8% Senior Secured Second Lien Notes	Sep. 30, 2013 Terminated 95/8% Senior Secured Second Lien Notes	Jun. 03, 2013 Terminated 95/8% Senior Secured Second Lien Notes	Dec. 12, 2012 Terminated 95/8% Senior Secured Second Lien Notes	Jun. 01, 2012 Terminated 95/8% Senior Secured Second Lien Notes	Dec. 12, 2011 Terminated 95/8% Senior Secured Second Lien Notes	Sep. 06, 2011 Terminated 95/8% Senior Secured Second Lien Notes	Jun. 01, 2011 Terminated 95/8% Senior Secured Second Lien Notes	Dec. 01, 2010 Terminated 95/8% Senior Secured Second Lien Notes	Jun. 01, 2010 Terminated 95/8% Senior Secured Second Lien Notes	Dec. 31, 2009 Terminated 95/8% Senior Secured Second Lien Notes	Sep. 30, 2013 Purchase of various intangible Internet assets (asset purchases)	Sep. 23, 2013 KDIS-FM, Little Rock, Arkansas and KRDY-AM, San Antonio, Texas	Sep. 11, 2013 GodUpdates Facebook page	Aug. 10, 2013 Christnotes.org (business acquisition)	Feb. 15, 2013 WJKR-FM, Columbus, Ohio	Feb. 05, 2013 WMUU-FM, Greenville, South Carolina
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Debt, issuance of principal amount											$ 300,000,000													$ 300,000,000
Repayment of Term Loan B										4,000,000	4,000,000
Loss on early retirement of long-term debt		16,000		33,000	(16,000)			(27,792,000)	(893,000)	14,000	16,000			26,900,000	900,000
Senior secured credit facility											292,000,000	300,000,000	25,000,000
Principal repurchased or redeemed														212,597,000		903,000	4,000,000	17,500,000	12,500,000	5,000,000	17,500,000	12,500,000	17,500,000
Debt, aggregate purchase price														240,300,000
Percent of debt purchase price														110.65%
Amount paid for redemption														22,700,000
Unamortized Discount														837,000		3,000	17,000	80,000	62,000	26,000	93,000	70,000	105,000
Bond Issue Costs														2,867,000			57,000	287,000	337,000	135,000	472,000	334,000	417,000
Class A and Class B common stock, dividend declared date	May 30, 2013		Sep. 12, 2013					Mar. 18, 2013
Class A and Class B common stock, dividend declared per share	$ 0.05		$ 0.0525					$ 0.05
Class A and Class B common stock, dividend paid	1,200,000		1,300,000			1,200,000		2,474,000	2,558,000
Class A and Class B common stock, payment date	Jun. 28, 2013		Oct. 04, 2013		Oct. 04, 2013	Apr. 01, 2013
Class A and Class B common stock, record date	Jun. 14, 2013		Sep. 26, 2013		Sep. 26, 2013	Mar. 25, 2013
Class A and Class B common stock, dividend declared per share, paid	$ 0.05		$ 0.0525			$ 0.05	$ 0.03	$ 0.10	$ 0.10
Business acquisition purchase price		10,384,000			10,384,000			10,384,000																	207,000	2,500,000	300,000	500,000	4,000,000
Business acquisition, goodwill		58,000			58,000			58,000																				20,755
Business acquisition purchase price								707,000	3,165,000																					5,400,000
Amount due on close of Transaction																														1,000,000
Amount payable																														2,000,000
Advertising cost																														3,000,000
Acquisition payment date																														2014-04
Discount on advertising credits								600,000
Fair value of advertising credits payable over ten years		$ 2,400,000			$ 2,400,000			$ 2,400,000
Advertising credits payable term								Ten
Amortization period of interest expense								10 years