DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details)		3 Months Ended	9 Months Ended	12 Months Ended
	Aug. 30, 2016 Segment	Aug. 31, 2017 Segment	May 31, 2017 Segment	Feb. 28, 2018 USD ($)	Feb. 28, 2017 USD ($) Segment	Feb. 29, 2016 USD ($)
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Number of reportable segments | Segment	2	2	1		2
Foreign transaction exchange gains (losses)				$ (500,000)	$ (100,000)	$ (27,000)
Adjustment of tax benefit from exercise of stock options activity				11,700,000
Tax benefits on vested and exercised equity awards				$ 937,000
Minimum [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Deferred revenue minimum contractual subscription or service period					1 year
Finite-Lived Intangible Asset, Useful Life					2 years
Warranty Term					1 year
Minimum [Member] | LoJack Product [Member] | Italy [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Service contract period					8 months
Maximum [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Deferred revenue minimum contractual subscription or service period					5 years
Finite-Lived Intangible Asset, Useful Life					10 years
Warranty Term					2 years
Maximum [Member] | LoJack Product [Member] | Italy [Member]
Description Of Business And Summary Of Significant Accounting Policies [Line Items]
Service contract period					96 months