Intangible Assets and Goodwill - Additional Interim Impairment Assessments (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 29, 2016	Feb. 28, 2015	Feb. 28, 2014
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment losses on intangible assets	$ 9,499	$ 67,915	$ 0
Scenario Four [Member] | Fcc Licenses
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment losses on intangible assets	5,440	9,520
Scenario Four [Member] | Goodwill
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment losses on intangible assets	695	$ 58,395
Scenario Four [Member] | Finite-Lived Intangible Assets [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment losses on intangible assets	$ 3,364