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           Schedule of Share-based Compensation and Assumptions as of May 9, 2014 (Details) (USD $) 
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        3 Months Ended | 
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           Feb. 28, 2015 
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| Stock Based Compensation Schedule Of Share-based Compensation And Assumptions As Of May 9, 2014 1 | 2.00%sdev_ScheduleOfSharebasedCompensationAndAssumptionsAsOfMayNineTwoZeroOneFourZeroTwoSevenSixThreeZeroKrNineOneMlzwFiveyZP | 
| Stock Based Compensation Schedule Of Share-based Compensation And Assumptions As Of May 9, 2014 2 | 0.00%sdev_ScheduleOfSharebasedCompensationAndAssumptionsAsOfMayNineTwoZeroOneFourZeroTwoSevenSixThreeZeroWJTwoxWyFOnednVNine | 
| Stock Based Compensation Schedule Of Share-based Compensation And Assumptions As Of May 9, 2014 3 | 0.00%sdev_ScheduleOfSharebasedCompensationAndAssumptionsAsOfMayNineTwoZeroOneFourZeroTwoSevenSixThreeZeroZeroBqqmTmrpXvSix | 
| Stock Based Compensation Schedule Of Share-based Compensation And Assumptions As Of May 9, 2014 4 | 205.42%sdev_ScheduleOfSharebasedCompensationAndAssumptionsAsOfMayNineTwoZeroOneFourZeroTwoSevenSixThreeZeroXvGdJkFourqNSevenhb | 
| Stock Based Compensation Schedule Of Share-based Compensation And Assumptions As Of May 9, 2014 5 | 0.24sdev_ScheduleOfSharebasedCompensationAndAssumptionsAsOfMayNineTwoZeroOneFourZeroTwoSevenSixThreeZeroHsWTwobNinexxFiveEightTT | 
| Stock Based Compensation Schedule Of Share-based Compensation And Assumptions As Of May 9, 2014 6 | $ 140,573sdev_ScheduleOfSharebasedCompensationAndAssumptionsAsOfMayNineTwoZeroOneFourZeroTwoSevenSixThreeZerocTwogZerokTwokSevenLyLS | 
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          Stock Based Compensation Schedule Of Share-based Compensation And Assumptions As Of May 9, 2014 6 No definition available. 
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          Stock Based Compensation Schedule Of Share-based Compensation And Assumptions As Of May 9, 2014 5 No definition available. 
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          Stock Based Compensation Schedule Of Share-based Compensation And Assumptions As Of May 9, 2014 1 No definition available. 
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          Stock Based Compensation Schedule Of Share-based Compensation And Assumptions As Of May 9, 2014 2 No definition available. 
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          Stock Based Compensation Schedule Of Share-based Compensation And Assumptions As Of May 9, 2014 4 No definition available. 
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          Stock Based Compensation Schedule Of Share-based Compensation And Assumptions As Of May 9, 2014 3 No definition available. 
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