XML 19 R28.htm IDEA: XBRL DOCUMENT v2.4.1.9

INVENTORY (Narrative) (Details) (USD $)	3 Months Ended
	Feb. 28, 2015
Inventory 1	$ 109,333sdev_InventoryZeroTwoSevenSixThreeZerodmXTzOnefTHFSevenSeven
Inventory 2	$ 120,246sdev_InventoryZeroTwoSevenSixThreeZeroOneTCJNtZfQvTTwo

X

- Definition

Inventory 1

+ References

No definition available.

+ Details

Name:	sdev_InventoryZeroTwoSevenSixThreeZerodmXTzOnefTHFSevenSeven
Namespace Prefix:	sdev_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Inventory 2

+ References

No definition available.

+ Details

Name:	sdev_InventoryZeroTwoSevenSixThreeZeroOneTCJNtZfQvTTwo
Namespace Prefix:	sdev_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration