Components of Income Tax Provision (Benefit) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Feb. 28, 2015	Feb. 28, 2014	Feb. 28, 2013
Current:
Federal	$ 0us-gaap_CurrentFederalTaxExpenseBenefit	$ 0us-gaap_CurrentFederalTaxExpenseBenefit	$ (529)us-gaap_CurrentFederalTaxExpenseBenefit
State	229	(900)	(152)
Foreign	0us-gaap_CurrentForeignTaxExpenseBenefit	13us-gaap_CurrentForeignTaxExpenseBenefit	161us-gaap_CurrentForeignTaxExpenseBenefit
Current Income Tax Expense (Benefit), Total	229us-gaap_CurrentIncomeTaxExpenseBenefit	(887)us-gaap_CurrentIncomeTaxExpenseBenefit	(520)us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred:
Federal	27,431	(25,219)	(4,589)
State	9,288	(7,957)	(1,930)
Foreign	0	0	0
Deferred Income Taxes and Tax Credits, Total	36,719	(33,176)	(6,519)
(Benefit) provision for income taxes	36,948us-gaap_IncomeTaxExpenseBenefit	(34,063)us-gaap_IncomeTaxExpenseBenefit	(7,039)us-gaap_IncomeTaxExpenseBenefit
Tax benefit of discontinued operations	$ 0	$ 0	$ (6,975)

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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Amount of current foreign income tax expense (benefit) pertaining to income (loss) from continuing operations.

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Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

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Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.

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Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.

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Amount of deferred income tax expense (benefit) and income tax credits.

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Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations.

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Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal.

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