Intangible Assets and Goodwill - Additional Interim Impairment Assessments (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Feb. 28, 2014	Feb. 28, 2013	Feb. 29, 2012
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment losses on intangible assets	$ 0	$ 11,419	$ 0
Interim Assessment | Fcc Licenses
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment losses on intangible assets		10,971
Annual Assessment | Goodwill
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment losses on intangible assets		$ 448