Significant Customers and Geographic Information - Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
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Oct. 31, 2013
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Oct. 31, 2012
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Oct. 31, 2013
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Oct. 31, 2012
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Segment Reporting Information [Line Items] | ||||
Revenue | $ 37,771 | $ 39,249 | $ 110,703 | $ 112,613 |
North America [Member]
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Segment Reporting Information [Line Items] | ||||
Revenue | 21,508 | 25,213 | 61,068 | 73,100 |
Europe and Middle East [Member]
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Segment Reporting Information [Line Items] | ||||
Revenue | 13,324 | 10,594 | 39,663 | 30,077 |
Latin America [Member]
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Segment Reporting Information [Line Items] | ||||
Revenue | 2,629 | 2,948 | 7,724 | 8,232 |
Asia Pacific and Other International Locations [Member]
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Segment Reporting Information [Line Items] | ||||
Revenue | 310 | 494 | 2,248 | 1,204 |
United States Revenue [Member]
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Segment Reporting Information [Line Items] | ||||
Revenue | $ 18,461 | $ 22,340 | $ 54,099 | $ 67,524 |
Sales [Member] | North America [Member]
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Segment Reporting Information [Line Items] | ||||
% of total revenue | 57.00% | 64.00% | 55.00% | 65.00% |
Sales [Member] | Europe and Middle East [Member]
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Segment Reporting Information [Line Items] | ||||
% of total revenue | 35.00% | 27.00% | 36.00% | 27.00% |
Sales [Member] | Latin America [Member]
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Segment Reporting Information [Line Items] | ||||
% of total revenue | 7.00% | 8.00% | 7.00% | 7.00% |
Sales [Member] | Asia Pacific and Other International Locations [Member]
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Segment Reporting Information [Line Items] | ||||
% of total revenue | 1.00% | 1.00% | 2.00% | 1.00% |
Sales [Member] | United States Revenue [Member]
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Segment Reporting Information [Line Items] | ||||
% of total revenue | 48.90% | 56.90% | 48.90% | 60.00% |