Long-term Debt - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended									6 Months Ended					6 Months Ended		0 Months Ended			6 Months Ended		0 Months Ended
	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2014	Aug. 31, 2013	Feb. 28, 2014	Aug. 31, 2014 98.7FM Non-recourse debt	Feb. 28, 2014 98.7FM Non-recourse debt	May 30, 2012 98.7FM Non-recourse debt	Aug. 31, 2014 Digonex Non-recourse debt	Jun. 16, 2014 Digonex Non-recourse debt	Feb. 28, 2014 Digonex Non-recourse debt	Aug. 31, 2014 Two Thousand Twelve Credit Agreement	Dec. 28, 2012 Two Thousand Twelve Credit Agreement	Dec. 28, 2012 Two Thousand Twelve Credit Agreement Term Loan	Dec. 28, 2012 Two Thousand Twelve Credit Agreement Revolver	Dec. 28, 2012 Two Thousand Twelve Credit Agreement Letter of Credit	Aug. 31, 2014 Two Thousand Fourteen Credit Agreement	Jun. 10, 2014 Two Thousand Fourteen Credit Agreement	Jun. 10, 2014 Two Thousand Fourteen Credit Agreement Term Loan	Jun. 10, 2014 Two Thousand Fourteen Credit Agreement Revolver	Jun. 10, 2014 Two Thousand Fourteen Credit Agreement Letter of Credit	Aug. 31, 2014 Base Rate Two Thousand Fourteen Credit Agreement	Aug. 31, 2014 London Interbank Offered Rate (LIBOR) Two Thousand Fourteen Credit Agreement	Jun. 10, 2014 WBLS-FM and WLIB-AM
Debt Instrument
Maximum borrowing capacity													$ 100,000,000	$ 80,000,000	$ 20,000,000	$ 5,000,000			$ 185,000,000.0	$ 20,000,000.0	$ 5,000,000.0
Loss on termination of credit agreement	(1,455,000)	0	(1,455,000)	0								(1,455,000)
Provision for credit facility increase																		20,000,000
Face amount of debt								82,200,000		6,200,000									185,000,000
Proceeds from issuance of debt																			109,000,000
Long-term debt held in escrow																			76,000,000
Borrowings on revolving credit facility																		13,000,000
Cash paid at first closing																								55,000,000
Cash payable at second closing																								76,000,000
Percentage of principal due in quarterly installments																	1.00%
Commitment fee																	5000.00%
Minimum interest rate as a percentage																						2.00%	1.00%
Basis spread on interest rate																						3.75%	4.75%
Amortization of financing costs																	1,000,000
Unamortized discount on issuance of debt	5,881,000		5,881,000		1,475,000												5,900,000	6,100,000
Interest rate during period								4.10%		5.00%
Non-recourse debt						$ 72,722,000	$ 74,942,000		$ 4,201,000	$ 4,200,000	$ 0