Income Taxes - Statutory U.S. Federal Income Tax Rate to Company's Effective Tax Rate (Detail)	12 Months Ended
Feb. 28, 2015	Feb. 28, 2014	Feb. 28, 2013
Income Tax Disclosure [Abstract]
Statutory rate	35.00%	35.00%	35.00%
Provision for state income taxes, net of Federal income tax benefit	(1.90%)	3.90%	3.70%
Domestic production activities deduction	3.50%	(4.80%)	(2.90%)
Impairment of goodwill	(50.00%)	20.50%
Other	(0.40%)	3.90%	0.20%
Total	(13.80%)	58.50%	36.00%

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for qualified production activity.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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