XML 44 R34.htm IDEA: XBRL DOCUMENT v3.19.1

SEGMENT DISCLOSURES (Narrative) (Details)	3 Months Ended
	Feb. 28, 2019 Segment
Number of reporting segment	2

X

- Definition

Represent number of reporting segment.

+ References

No definition available.

+ Details

Name:	sdev_NumberOfReportingSegment
Namespace Prefix:	sdev_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration