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

ACQUISITIONS AND RECENT TRANSACTIONS (Summary of Business Acquisitions and Asset Purchases) (Details)

ACQUISITIONS AND RECENT TRANSACTIONS (Summary of Business Acquisitions and Asset Purchases) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended		0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 23, 2014	Dec. 22, 2014	Nov. 24, 2014	Oct. 03, 2014	May 22, 2014	May 06, 2014	Apr. 15, 2014	Feb. 07, 2014	Jan. 10, 2014	Dec. 10, 2013	Dec. 09, 2013	Sep. 23, 2013	Sep. 11, 2013	Aug. 10, 2013	Feb. 15, 2013	Feb. 05, 2013
Business Acquisition [Line Items]
Business acquisition, total cost	$ 18,656	$ 12,820
WLTE-FM Pendleton, South Carolina (asset acquisition)
Business Acquisition [Line Items]
Business acquisition, total cost			525
Business acquisition, date			Dec. 23, 2014
FM Translator, Pickens, South Carolina (asset acquisition)
Business Acquisition [Line Items]
Business acquisition, total cost			185
Business acquisition, date			Dec. 23, 2014
FM Translator, Bayshore Gardens, Florida (asset acquisition)
Business Acquisition [Line Items]
Business acquisition, total cost				140
Business acquisition, date				Dec. 22, 2014
FM Translator, Traveler's Rest, South Carolina (asset acquisition)
Business Acquisition [Line Items]
Business acquisition, total cost					200
Business acquisition, date					Nov. 24, 2014
KXXT-AM Phoenix, Arizona (business acquisition)
Business Acquisition [Line Items]
Business acquisition, total cost						575
Business acquisition, date						Oct. 01, 2014
WOCN-AM Miami, Florida (business acquisition)
Business Acquisition [Line Items]
Business acquisition, total cost							2,450
Business acquisition, date							May 22, 2014
WRTH-FM (formerly WOLT-FM), Greenville, South Carolina (business acquisition)
Business Acquisition [Line Items]
Business acquisition, total cost								1,125
Business acquisition, date								May 06, 2014
FM Translators, Orlando, Florida, Tampa, Florida, Omaha, Nebraska (asset purchase)
Business Acquisition [Line Items]
Business acquisition, total cost									357
Business acquisition, date									Apr. 15, 2014
KDIS-FM, Little Rock, Arkansas and KRDY-AM, San Antonio, Texas [Member]
Business Acquisition [Line Items]
Business acquisition, total cost										1,984
Business acquisition, date										Feb. 07, 2014
Eagle Publishing (business acquisition) [Member]
Business Acquisition [Line Items]
Business acquisition, total cost											10,628
Business acquisition, date											Jan. 10, 2014
Purchases of domain names (asset purchases)
Business Acquisition [Line Items]
Business acquisition, total cost	487
Twitchy.com (business acquisition) [Member]
Business Acquisition [Line Items]
Business acquisition, total cost												1,536
Business acquisition, date												Dec. 10, 2013
EverythingInspirational.com (asset purchases) [Member]
Business Acquisition [Line Items]
Business acquisition, total cost													400
Business acquisition, date													Dec. 09, 2013
Land, San Antonio, Texas (asset purchase) [Member]
Business Acquisition [Line Items]
Business acquisition, total cost														500
Business acquisition, date														Sep. 23, 2013
GodUpdates.org (asset purchase) [Member]
Business Acquisition [Line Items]
Business acquisition, total cost															250
Business acquisition, date															Sep. 11, 2013
Christnotes.org (business acquisition) [Member]
Business Acquisition [Line Items]
Business acquisition, total cost																500
Business acquisition, date																Aug. 10, 2013
WTOH-FM, Columbus, Ohio (business acquisition) [Member]
Business Acquisition [Line Items]
Business acquisition, total cost																	4,000
Business acquisition, date																	Feb. 15, 2013
WGTK-FM, Greenville, South Carolina (business acquisition) [Member]
Business Acquisition [Line Items]
Business acquisition, total cost																		5,427
Business acquisition, date																		Feb. 05, 2013
Purchase of various intangible Internet assets (asset purchases) [Member]
Business Acquisition [Line Items]
Business acquisition, total cost		$ 207