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SEGMENT DISCLOSURES (Narrative) (Details) (USD $) | 12 Months Ended
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Nov. 30, 2012
Segment Disclosures 1 | $ 130,295

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- Definition Segment Disclosures 1 + References No definition available. + Details
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Namespace Prefix: | sdev_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration