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Schedule of Derivative Liabilities at Fair Value (Details) - USD ($)	Aug. 31, 2018	Nov. 30, 2017
Indexed Shares [Member]
Embedded derivatives, liability	$ 8,044,853	$ 8,044,853
Fair Value [Member]
Embedded derivatives, liability	$ 290,382	$ 539,860

X

- Definition

Fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as a liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959

+ Details

Name:	us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=sdev_IndexedSharesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=sdev_FairValueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: