Acquisitions and Dispositions - Narrative (Details) - USD ($) shares in Millions					7 Months Ended	8 Months Ended	12 Months Ended
	Feb. 13, 2015	Jun. 16, 2014	Jun. 10, 2014	Feb. 11, 2014	Dec. 31, 2014	Feb. 13, 2015	Feb. 29, 2016	Feb. 28, 2015	Feb. 28, 2014	Aug. 15, 2014	Jun. 06, 2014	May. 30, 2012
Business Acquisition [Line Items]
Goodwill, Acquired During Period								$ 61,148,000
Goodwill							$ 14,697,000	15,392,000
Future reduced monthly fee amount				$ 740,000
Maximum borrowing capacity under credit agreement							17,000,000
Debt, Face Amount												$ 82,200,000
Monthly expense reimbursement under LMA				1,300,000
NET REVENUES							231,433,000	237,938,000	$ 205,146,000
Station Operating Expenses Excluding Depreciation And Amortization							183,394,000	181,009,000	159,009,000
Business Combination, Acquisition Related Costs, Cumulative								1,600,000
Gain (Loss) on Contract Termination							$ 0	2,500,000	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	$ 76,000,000		$ 55,000,000			$ 81,563,000		133,462,000
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	$ 76,000,000.0		$ 55,000,000.0
Digonex
Business Acquisition [Line Items]
Goodwill, Acquired During Period		$ 2,753,000
Goodwill		2,800,000
Purchase price		3,000,000
Cash paid		3,000,000
Payments to Acquire Businesses, Net of Cash Acquired		$ 2,544,000
Convertible Preferred Stock		1.0
Convertible Debt										$ 4,500,000	$ 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		76.00%
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