Stock Based Compensation (Details 1) - Feb. 28, 2015 - shares shares in Thousands	Total
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number of Shares	784
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	6 years 6 months
Options Exercisable, Number of Shares	589
Range One [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number of Shares	250
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	6 years 10 months 24 days
Options Exercisable, Number of Shares	188
Range Two [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number of Shares	534
Options Outstanding, Weighted Average Remaining Contractual Life (Years)	6 years 4 months 24 days
Options Exercisable, Number of Shares	401