SEGMENT INFORMATION (Details) (USD $)	3 Months Ended		9 Months Ended
	Nov. 30, 2014	Nov. 30, 2013	Nov. 30, 2014	Nov. 30, 2013
Segment Reporting Information [Line Items]
Revenues	$ 63,225,000	$ 63,503,000	$ 181,416,000	$ 176,056,000
Gross profit	22,104,000	20,995,000	62,819,000	59,315,000
Gross margin, percentage	35.00%	33.10%	34.60%	33.70%
Operating income	6,455,000	6,032,000	16,092,000	13,666,000
Stock-based compensation expense	1,168,000	808,000	2,924,000	2,129,000
Operating Segments [Member] | Wireless Datacom [Member]
Segment Reporting Information [Line Items]
Revenues	54,580,000	49,747,000	152,631,000	137,808,000
Gross profit	20,078,000	18,159,000	55,440,000	51,674,000
Gross margin, percentage	36.80%	36.50%	36.30%	37.50%
Operating income	6,579,000	5,026,000	14,904,000	11,706,000
Operating Segments [Member] | Satellite [Member]
Segment Reporting Information [Line Items]
Revenues	8,645,000	13,756,000	28,785,000	38,248,000
Gross profit	2,026,000	2,836,000	7,379,000	7,641,000
Gross margin, percentage	23.40%	20.60%	25.60%	20.00%
Operating income	914,000	1,785,000	4,070,000	4,561,000
Corporate Expenses [Member]
Segment Reporting Information [Line Items]
Operating income	(1,038,000)	(779,000)	(2,882,000)	(2,601,000)
Stock-based compensation expense	$ 249,000	$ 140,000	$ 587,000	$ 425,000