SEGMENT AND GEOGRAPHIC DATA (Summary of Segment Information) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Feb. 28, 2014	Nov. 30, 2013	Aug. 31, 2013	May 31, 2013	Feb. 28, 2013	Nov. 30, 2012	Aug. 31, 2012	May 31, 2012	Feb. 28, 2014	Feb. 28, 2013	Feb. 28, 2012
Segment Reporting Information [Line Items]
Revenues	$ 59,847	$ 63,503	$ 58,807	$ 53,746	$ 48,391	$ 44,340	$ 43,987	$ 43,861	$ 235,903	$ 180,579	$ 138,728
Gross profit	20,616	20,995	19,839	18,481	15,050	14,032	14,135	13,676	79,931	56,893	42,019
Gross margin	34.40%	33.10%	33.70%	34.40%	31.10%	31.60%	32.10%	31.20%	33.90%	31.50%	30.30%
Operating income (loss)									18,343	15,980	7,370
Operating Segments [Member] | Wireless Datacom [Member]
Segment Reporting Information [Line Items]
Revenues									187,012	139,503	99,121
Gross profit									70,114	50,005	38,632
Gross margin									37.50%	35.80%	39.00%
Operating income (loss)									16,324	16,844	11,564
Operating Segments [Member] | Satellite [Member]
Segment Reporting Information [Line Items]
Revenues									48,891	41,076	39,607
Gross profit									9,817	6,888	3,387
Gross margin									20.10%	16.80%	8.60%
Operating income (loss)									5,642	3,111	(292)
Corporate Expenses [Member]
Segment Reporting Information [Line Items]
Operating income (loss)									$ (3,623)	$ (3,975)	$ (3,902)