PROPERTY, EQUIPMENT AND IMPROVEMENTS (Details) (USD $) In Thousands, unless otherwise specified	Feb. 28, 2013	Feb. 29, 2012
Property, equipment and improvements
Property, equipment and improvements, gross	$ 18,842	$ 17,223
Less accumulated depreciation and amortization	(16,064)	(15,462)
Property, equipment and improvements, net of accumulated depreciation and amortization	2,778	1,761
Leasehold improvements [Member]
Property, equipment and improvements
Property, equipment and improvements, gross	1,830	1,725
Plant equipment and tooling [Member]
Property, equipment and improvements
Property, equipment and improvements, gross	12,436	11,179
Office equipment, computers and furniture [Member]
Property, equipment and improvements
Property, equipment and improvements, gross	$ 4,576	$ 4,319

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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