Acquisitions and Dispositions - Additional Information (Detail) (USD $)	0 Months Ended							0 Months Ended	3 Months Ended	12 Months Ended			0 Months Ended	12 Months Ended			0 Months Ended	12 Months Ended			0 Months Ended	12 Months Ended			0 Months Ended
	Sep. 01, 2011	Sep. 30, 2011 Merlin Media LLC	Sep. 01, 2011 Merlin Media LLC	Feb. 28, 2013 Merlin Media LLC	Sep. 01, 2011 Common Equities	Sep. 01, 2011 Preferred Equities	Sep. 01, 2011 Nonredeemable Preferred Stock	Feb. 25, 2013 Slovakia Radio Network (Radio)	May 31, 2013 Slovakia Radio Network (Radio)	Feb. 28, 2014 Slovakia Radio Network (Radio)	Feb. 28, 2013 Slovakia Radio Network (Radio)	Feb. 29, 2012 Slovakia Radio Network (Radio)	Jan. 03, 2013 Bulgaria Radio Network (Radio)	Feb. 28, 2014 Bulgaria Radio Network (Radio)	Feb. 28, 2013 Bulgaria Radio Network (Radio)	Feb. 29, 2012 Bulgaria Radio Network (Radio)	Oct. 31, 2012 Emmis Interactive Inc. (Radio)	Feb. 28, 2014 Emmis Interactive Inc. (Radio)	Feb. 28, 2013 Emmis Interactive Inc. (Radio)	Feb. 29, 2012 Emmis Interactive Inc. (Radio)	Oct. 01, 2012 Sampler Publications	Feb. 28, 2014 Sampler Publications	Feb. 28, 2013 Sampler Publications	Feb. 29, 2012 Sampler Publications	Aug. 23, 2012 KXOS-FM (Radio)	Apr. 06, 2011 Glendale, CA
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Selling cash price of land, towers and other equipment			$ 130,000,000					$ 21,200,000					$ 1,700,000								$ 8,700,000				$ 85,500,000	$ 6,000,000
Gain (loss) on sale of business								14,800,000		0	14,798,000	0	(1,300,000)	0	(1,254,000)	0	(700,000)	0	(654,000)	0	700,000	0	695,000	0	32,800,000	4,900,000
Payment to settle working capital adjustments and transaction costs									1,700,000
Transaction expenses and tax obligations			8,600,000																		200,000
Repayment of term loans under credit agreement			2,000,000																		8,500,000
Cash proceeds for principal prepayments, percentage			38.00%
Equity interest percentage			20.60%
Equity interest in acquiree, fair value					5,600,000	28,700,000	87,000,000
Preferred return percentage	8.00%
Fair value of Preferred equity interest sold	10,800,000
Secured convertible notes issued	60,000,000
Marketable securities maturity period	5 years
Interest accrued rate	15.00%
Impairment losses			16,400,000
Common equity ownership interest				17.50%
Discretionary bonus payment		$ 1,700,000