| 
           Schedule of Share-based Compensation and Assumptions as of March 19, 2014 (Details) (USD $) 
         | 
        3 Months Ended | 
|---|---|
| 
           Feb. 28, 2015 
         | 
      |
| Stock Based Compensation Schedule Of Share-based Compensation And Assumptions As Of March 19, 2014 1 | 2.00%sdev_ScheduleOfSharebasedCompensationAndAssumptionsAsOfMarchOneNineTwoZeroOneFourZeroTwoSevenSixThreeZeroVtCbfCWOnesQpZero | 
| Stock Based Compensation Schedule Of Share-based Compensation And Assumptions As Of March 19, 2014 2 | 0.00%sdev_ScheduleOfSharebasedCompensationAndAssumptionsAsOfMarchOneNineTwoZeroOneFourZeroTwoSevenSixThreeZeroHgfFivehgVcxhEightFour | 
| Stock Based Compensation Schedule Of Share-based Compensation And Assumptions As Of March 19, 2014 3 | 0.00%sdev_ScheduleOfSharebasedCompensationAndAssumptionsAsOfMarchOneNineTwoZeroOneFourZeroTwoSevenSixThreeZeroFivetmTMvKdhsyOne | 
| Stock Based Compensation Schedule Of Share-based Compensation And Assumptions As Of March 19, 2014 4 | 151.63%sdev_ScheduleOfSharebasedCompensationAndAssumptionsAsOfMarchOneNineTwoZeroOneFourZeroTwoSevenSixThreeZeroThreePswSxPgfFDz | 
| Stock Based Compensation Schedule Of Share-based Compensation And Assumptions As Of March 19, 2014 5 | 0.16sdev_ScheduleOfSharebasedCompensationAndAssumptionsAsOfMarchOneNineTwoZeroOneFourZeroTwoSevenSixThreeZerocKLHFiveSPxTwoZeroEightd | 
| Stock Based Compensation Schedule Of Share-based Compensation And Assumptions As Of March 19, 2014 6 | $ 47,897sdev_ScheduleOfSharebasedCompensationAndAssumptionsAsOfMarchOneNineTwoZeroOneFourZeroTwoSevenSixThreeZerosHXnlHySixOnegQC | 
| X | ||||||||||
| 
             
- Definition 
          Stock Based Compensation Schedule Of Share-based Compensation And Assumptions As Of March 19, 2014 5 No definition available. 
  | 
        
| X | ||||||||||
| 
             
- Definition 
          Stock Based Compensation Schedule Of Share-based Compensation And Assumptions As Of March 19, 2014 3 No definition available. 
  | 
        
| X | ||||||||||
| 
             
- Definition 
          Stock Based Compensation Schedule Of Share-based Compensation And Assumptions As Of March 19, 2014 2 No definition available. 
  | 
        
| X | ||||||||||
| 
             
- Definition 
          Stock Based Compensation Schedule Of Share-based Compensation And Assumptions As Of March 19, 2014 6 No definition available. 
  | 
        
| X | ||||||||||
| 
             
- Definition 
          Stock Based Compensation Schedule Of Share-based Compensation And Assumptions As Of March 19, 2014 4 No definition available. 
  | 
        
| X | ||||||||||
| 
             
- Definition 
          Stock Based Compensation Schedule Of Share-based Compensation And Assumptions As Of March 19, 2014 1 No definition available. 
  |