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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 | 6 Months Ended | ||
|---|---|---|---|---|
|
Jul. 31, 2013
|
Jul. 31, 2012
|
Jul. 31, 2013
|
Jul. 31, 2012
|
|
| Segment Reporting Information [Line Items] | ||||
| Revenue | $ 37,380 | $ 36,738 | $ 72,932 | $ 73,364 |
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North America [Member]
|
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| Segment Reporting Information [Line Items] | ||||
| Revenue | 22,957 | 24,458 | 39,560 | 47,887 |
| Revenue in percentage | 62.00% | 66.00% | 54.00% | 65.00% |
|
Europe and Middle East [Member]
|
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| Segment Reporting Information [Line Items] | ||||
| Revenue | 11,400 | 9,194 | 26,338 | 19,484 |
| Revenue in percentage | 30.00% | 25.00% | 36.00% | 27.00% |
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Latin America [Member]
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| Segment Reporting Information [Line Items] | ||||
| Revenue | 1,969 | 2,529 | 5,096 | 5,283 |
| Revenue in percentage | 5.00% | 7.00% | 7.00% | 7.00% |
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Asia Pacific and Other International Locations [Member]
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| Segment Reporting Information [Line Items] | ||||
| Revenue | 1,054 | 557 | 1,938 | 710 |
| Revenue in percentage | 3.00% | 2.00% | 3.00% | 1.00% |
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United States Revenue [Member]
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| Segment Reporting Information [Line Items] | ||||
| Revenue | $ 20,465 | $ 22,765 | $ 35,639 | $ 45,186 |
| % of total revenue | 54.70% | 62.00% | 48.90% | 61.60% |