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Stock-based Compensation (Details 2) (USD $)	9 Months Ended
Stock-based Compensation (Details 2) (USD $)	Nov. 30, 2013	Nov. 30, 2012
Share based compensation expense and related income tax benefits
Compensation Expense	$ 2,988,596	$ 2,816,827
Income tax benefits	$ 1,046,009	$ 985,889

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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