XML 64 R50.htm IDEA: XBRL DOCUMENT v3.10.0.1

Schedule of Depreciation Rates, Plant and Equipment (Details)	12 Months Ended
	Nov. 30, 2018
Computer equipment [Member]
Depreciation rate	30% declining balance method
Furniture and fixtures [Member]
Depreciation rate	30% declining balance method
Leasehold Improvements [Member]
Depreciation rate	Straight line
Moulds [Member]
Depreciation rate	20% straight line
Property, Plant and Equipment, Useful Life	5 years

X

- Definition

Description of the methodology for computing depreciation for classes of depreciable assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	duration

X

- Details

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Namespace Prefix:
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X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_FurnitureAndFixturesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_LeaseholdImprovementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=sdev_MouldsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: