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Business (Details Textual) | 3 Months Ended
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Apr. 30, 2014 | Apr. 30, 2013
Business And Significant Accounting Policies [Line Items] |  |
Entity Wide Revenue Major Customer Description | No customer accounted for more than 10% of net sales | No customer accounted for more than 10% of net sales

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- Details
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- Definition Description of entity wide revenue major customer resulted in more than 10% of net sales. + References No definition available. + Details
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