Intangible Assets and Goodwill - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2014	Aug. 31, 2013	Feb. 28, 2014
Intangible Assets And Goodwill [Line Items]
Carrying amount of indefinite-lived intangibles	$ 219,577,000		$ 219,577,000		$ 150,558,000
Goodwill	74,337,000		74,337,000		12,639,000
Amortization of intangible assets	100,000	100,000	100,000	100,000
Radio
Intangible Assets And Goodwill [Line Items]
Goodwill	63,549,000		63,549,000		4,603,000
Publishing
Intangible Assets And Goodwill [Line Items]
Goodwill	$ 8,036,000		$ 8,036,000		$ 8,036,000