QUARTERLY FINANCIAL INFORMATION (UNAUDITED) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Feb. 29, 2016	Nov. 30, 2015	Aug. 31, 2015	May. 31, 2015	Feb. 28, 2015	Nov. 30, 2014	Aug. 31, 2014	May. 31, 2014	Feb. 29, 2016	Feb. 28, 2015	Feb. 28, 2014
QUARTERLY FINANCIAL INFORMATION (UNAUDITED) [Abstract]
Revenues	$ 70,807	$ 74,675	$ 69,808	$ 65,429	$ 69,190	$ 63,225	$ 59,210	$ 58,981	$ 280,719	$ 250,606	$ 235,903
Gross profit	$ 27,556	$ 26,574	$ 25,303	$ 23,526	$ 24,585	$ 22,104	$ 20,496	$ 20,219	$ 102,959	$ 87,404	$ 79,931
Gross margin	38.90%	35.60%	36.20%	36.00%	35.50%	35.00%	34.60%	34.30%	36.70%	34.90%	33.90%
Net income	$ 5,506	$ 3,876	$ 3,499	$ 4,059	$ 6,516	$ 4,021	$ 3,278	$ 2,693	$ 16,940	$ 16,508	$ 11,803
Earnings per diluted share	$ 0.15	$ 0.10	$ 0.10	$ 0.11	$ 0.18	$ 0.11	$ 0.09	$ 0.07	$ 0.46	$ 0.45	$ 0.33
Acquisition expenses	$ 2,000
Unrealized gain on investment in LoJack common stock	1,400								$ 1,416
Litigation provision	(2,900)
Income tax expense (benefit)	$ (2,400)								$ 4,572	$ 8,292	$ 6,108