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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) | 9 Months Ended
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Aug. 31, 2014
Schedule of Depreciation Rate, Plant and Equipment [Table Text Block] |
| Computer equipment | 30% | declining balance method
| Furniture and Fixtures | 30% | declining balance method
| Leasehold Improvements |  | straight line over period of lease
| Moulds | 20% | straight line over 5 years

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- Definition Schedule of Depreciation Rate, Plant and Equipment + References No definition available. + Details
Name: | sdev_ScheduleOfDepreciationRatePlantAndEquipmentTableTextBlock
Namespace Prefix: | sdev_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration