Acquisitions and Dispositions - Narrative (Details) (USD $)	0 Months Ended	3 Months Ended								12 Months Ended			0 Months Ended	9 Months Ended	0 Months Ended	8 Months Ended	0 Months Ended	6 Months Ended
	Feb. 11, 2014	Feb. 28, 2015	Nov. 30, 2014	Aug. 31, 2014	May 31, 2014	Feb. 28, 2014	Nov. 30, 2013	Aug. 31, 2013	May 31, 2013	Feb. 28, 2015	Feb. 28, 2014	Feb. 28, 2013	Jun. 10, 2014	Nov. 30, 2014	Feb. 13, 2015	Feb. 13, 2015	Jun. 16, 2014	Dec. 31, 2014	May 30, 2012	Aug. 15, 2014
Business Acquisition [Line Items]
Goodwill, Acquired During Period											$ 61,148,000
Goodwill		15,392,000				12,639,000				15,392,000	12,639,000
Future reduced monthly fee amount	740,000
Maximum borrowing capacity under credit agreement		12,000,000								12,000,000
Debt, Face Amount																			82,200,000
Monthly expense reimbursement under LMA	1,300,000
NET REVENUES		53,430,000	62,960,000	61,824,000	59,724,000	46,972,000	52,621,000	54,967,000	50,586,000	237,938,000	205,146,000	196,084,000
Station Operating Expenses Excluding Depreciation And Amortization										181,009,000	159,009,000	154,071,000
Business Combination, Acquisition Related Costs, Cumulative		1,600,000								1,600,000
Gain (Loss) on Contract Termination										2,500,000	0	0
Contract-Based Intangible Assets
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles													300,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life													3 years
Customer-Related Intangible Assets
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles													2,200,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life													7 years
Patents
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life														7 years
Customer Lists
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life														3 years
Trademarks
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life														15 years
2014 Credit Agreement
Business Acquisition [Line Items]
Maximum borrowing capacity under credit agreement													20,000,000.0
Debt, Face Amount													185,000,000.0
Proceeds from Issuance of Debt													109,000,000
2014 Credit Agreement | Term Loan
Business Acquisition [Line Items]
Maximum borrowing capacity under credit agreement													185,000,000.0
Debt, Face Amount													185,000,000
Proceeds from Issuance of Debt													109,000,000
Debt Instrument, Long-term Debt Held in Escrow													76,000,000
2014 Credit Agreement | Revolver
Business Acquisition [Line Items]
Maximum borrowing capacity under credit agreement													20,000,000.0
YMF
Business Acquisition [Line Items]
Future reduced monthly fee amount	740,000
Monthly expense reimbursement under LMA	1,275,000
Station operating expense
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs										400,000
Corporate expenses
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs										300,000
WBLS-FM and WLIB-AM
Business Acquisition [Line Items]
Goodwill, Acquired During Period													58,395,000
Expected Payment to Acquire Business, Gross													76,000,000
Purchase price													131,000,000
Cash paid													55,000,000
Business Combination, Consideration Transferred, Equity Interest Transferred, Percentage													49.90%
Payments of interest expense related o accretion of acquisition liabilities																3,101,000
Payments to Acquire Businesses, Net of Cash Acquired										133,462,000			55,000,000		76,000,000	81,563,000
NET REVENUES										28,100,000
Station Operating Expenses Excluding Depreciation And Amortization										20,300,000
Business Combination, Acquisition Related Costs										700,000	900,000
WBLS-FM and WLIB-AM | 2014 Credit Agreement
Business Acquisition [Line Items]
Cash paid													55,000,000.0		76,000,000.0
Digonex
Business Acquisition [Line Items]
Goodwill, Acquired During Period																	2,753,000
Goodwill																	2,753,000
Purchase price																	3,000,000
Cash paid																	3,000,000
Payments to Acquire Businesses, Net of Cash Acquired																	2,544,000
Convertible Preferred Stock																	1,000,000
Convertible Debt																	2,000,000			2,000,000
Equity Interest in Acquiree, Assuming Conversion of Convertible Instruments																	51.00%
Business Combination, Additional Convertible Rights Acquired, Total Equity Interest in Acquiree, Percentage																	66.00%
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual																		200,000
Business Combination, Pro Forma Information, Station Operating Expenses since Acquisition Date, Actual																		1,400,000
Digonex | Patents
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles																	5,200,000
Digonex | Customer Lists
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles																	700,000
Digonex | Trademarks
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles																	$ 300,000