PROPERTY, EQUIPMENT AND IMPROVEMENTS (Details) (USD $) In Thousands, unless otherwise specified	Feb. 28, 2014	Feb. 28, 2013
Property, equipment and improvements
Property, equipment and improvements, gross	$ 22,587	$ 18,842
Less accumulated depreciation and amortization	(17,816)	(16,064)
Property, equipment and improvements, net of accumulated depreciation and amortization	4,771	2,778
Leasehold improvements [Member]
Property, equipment and improvements
Property, equipment and improvements, gross	1,940	1,830
Plant equipment and tooling [Member]
Property, equipment and improvements
Property, equipment and improvements, gross	12,893	12,436
Office equipment, computers and furniture [Member]
Property, equipment and improvements
Property, equipment and improvements, gross	$ 7,754	$ 4,576