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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

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Intangible Assets and Goodwill - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
	Nov. 30, 2014	Nov. 30, 2013	Nov. 30, 2014	Nov. 30, 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	74,337,000us-gaap_Goodwill		74,337,000us-gaap_Goodwill		12,639,000us-gaap_Goodwill
Amortization of intangible assets	0us-gaap_AmortizationOfIntangibleAssets	0us-gaap_AmortizationOfIntangibleAssets	0.5us-gaap_AmortizationOfIntangibleAssets	0us-gaap_AmortizationOfIntangibleAssets
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