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Other Intangible Assets (Details Textual) (USD $)	3 Months Ended		6 Months Ended
Other Intangible Assets (Details Textual) (USD $)	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2012	Jul. 31, 2011
Other Intangible Asset (Textual) [Abstract]
Amortization Expense	$ 61,000	$ 87,000	$ 121,000	$ 175,000

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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