SEGMENT INFORMATION (Details) (USD $)	3 Months Ended		6 Months Ended
	Aug. 31, 2014	Aug. 31, 2013	Aug. 31, 2014	Aug. 31, 2013
Segment Reporting Information [Line Items]
Revenues	$ 59,210,000	$ 58,807,000	$ 118,191,000	$ 112,553,000
Gross profit	20,496,000	19,839,000	40,715,000	38,320,000
Gross margin, percentage	34.60%	33.70%	34.40%	34.00%
Operating income	5,033,000	4,757,000	9,637,000	7,634,000
Stock-based compensation expense	936,000	690,000	1,756,000	1,321,000
Operating Segments [Member] | Wireless Datacom [Member]
Segment Reporting Information [Line Items]
Revenues	50,204,000	47,196,000	98,051,000	88,061,000
Gross profit	18,047,000	17,555,000	35,362,000	33,515,000
Gross margin, percentage	35.90%	37.20%	36.10%	38.10%
Operating income	4,657,000	4,314,000	8,325,000	6,680,000
Operating Segments [Member] | Satellite [Member]
Segment Reporting Information [Line Items]
Revenues	9,006,000	11,611,000	20,140,000	24,492,000
Gross profit	2,449,000	2,284,000	5,353,000	4,805,000
Gross margin, percentage	27.20%	19.70%	26.60%	19.60%
Operating income	1,300,000	1,228,000	3,156,000	2,776,000
Corporate Expenses [Member]
Segment Reporting Information [Line Items]
Operating income	(924,000)	(785,000)	(1,844,000)	(1,822,000)
Stock-based compensation expense	$ 185,000	$ 142,000	$ 338,000	$ 284,000