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Stock-based Compensation (Details 2) (USD $)	6 Months Ended
Stock-based Compensation (Details 2) (USD $)	Aug. 31, 2013	Aug. 31, 2012
Share based compensation expense and related income tax benefits
Compensation Expense	$ 2,512,547	$ 2,434,487
Income tax benefits	$ 879,391	$ 852,070

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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