SEGMENT AND GEOGRAPHIC DATA (Summary of Adjusted EBITDA) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Feb. 28, 2018	Nov. 30, 2017	Aug. 31, 2017	May 31, 2017	Feb. 28, 2017	Nov. 30, 2016	Aug. 31, 2016	May 31, 2016	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Segment Information Summary Of Adjustments Results Of Ebitda Details [Abstract]
Net income (loss)	$ (4,767)	$ 11,806	$ 12,232	$ (2,654)	$ (4,239)	$ (1,527)	$ 521	$ (2,659)	$ 16,617	$ (7,904)	$ 16,940
Investment income									(2,256)	(1,691)	(1,871)
Interest expense									10,280	9,896	7,595
Income tax effects									10,681	(1,563)	4,572
Depreciation expense									7,968	8,408	3,582
Intangible asset amortization									14,989	15,061	6,626
Stock-based compensation expense									9,298	7,833	5,854
Equity in net loss of affiliate									1,411	1,284	829
Acquisition and integration expenses										4,513	1,980
Non-cash adjustment to inventory and fixed asset									335	4,339
Legal expenses for LoJack battery performance issue									3,323	1,948
Litigation provision									7,415	7,244	2,900
Gain on LoJack battery performance legal Settlement		$ (13,300)	$ (15,000)						(28,333)
Other									654
Adjusted EBITDA									$ 52,382	$ 49,368	$ 49,007