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Sales and Major Customers - Summary of Company's Revenues from Customers by Geographic Region, Outside the U.S. (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jan. 31, 2016 | Jan. 31, 2015 | Jan. 31, 2014
Revenue, Major Customer [Line Items] |  |  |
Total revenues from customers | $ 44,503 | $ 70,591 | $ 80,422
Canada [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Total revenues from customers | 1,354 | 7,376 | 13,113
UK and Europe [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Total revenues from customers | 16,437 | 17,427 | 23,456
Latin America [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Total revenues from customers | 3,283 | 12,706 | 7,529
Asia/South Pacific [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Total revenues from customers | 16,623 | 18,407 | 25,256
Eurasia [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Total revenues from customers | 3,659 | 5,853 | 6,810
Other [Member] |  |  |
Revenue, Major Customer [Line Items] |  |  |
Total revenues from customers | $ 3,147 | $ 8,822 | $ 4,258

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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