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Intangible Assets (Details Textual) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Nov. 30, 2012	Nov. 30, 2011
Intangible Assets (Textual) [Abstract]
Intangible assets, amortization expense	$ 179	$ 222
Maximum [Member]
Intangible Assets (Textual) [Abstract]
Intangible asset, expected life	15 years
Minimum [Member]
Intangible Assets (Textual) [Abstract]
Intangible asset, expected life	5 years

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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