Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended	12 Months Ended
Nov. 30, 2014	Nov. 30, 2013 Rate	Nov. 30, 2014 Rate	Nov. 30, 2013	Feb. 28, 2015
Effective Income Tax Rate, Continuing Operations		31.40%	10.80%		46.10%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			0.00%
Income tax expense (benefit)	$ 584us-gaap_IncomeTaxExpenseBenefit	$ 6,409us-gaap_IncomeTaxExpenseBenefit	$ (1,308)us-gaap_IncomeTaxExpenseBenefit	$ 10,261us-gaap_IncomeTaxExpenseBenefit
Unrecognized Tax Benefits, Period Increase (Decrease)	$ 6,831

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

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The net amount of all increases and decreases in unrecognized tax benefits for the period.

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