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MAJOR CUSTOMERS (Detail Textuals) | 12 Months Ended
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Jan. 31, 2017 | Jan. 31, 2016 | Jan. 31, 2015
Customer One |  |  |
Revenue, Major Customer [Line Items] |  |  |
Percentage of net sales from major customer | 21.80% | 20.80% | 18.70%

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