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Consolidated Balance Sheet Detail - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
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Jan. 31, 2015
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Jan. 31, 2014
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Jan. 31, 2013
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| Balance Sheet Related Disclosures [Abstract] | |||
| Depreciation and amortization expense | $ 3.7us-gaap_DepreciationDepletionAndAmortization | $ 4.4us-gaap_DepreciationDepletionAndAmortization | $ 4.7us-gaap_DepreciationDepletionAndAmortization |
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- Details
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- Definition
The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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