Goodwill and Intangible Assets - Schedule of Change in Carrying Amount of Goodwill (Detail) $ in Thousands |
12 Months Ended |
|---|---|
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Jan. 31, 2017
USD ($)
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| Goodwill [Roll Forward] | |
| Goodwill, gross | $ 55,962 |
| Accumulated impairment losses | (15,787) |
| Goodwill, net | 40,175 |
| Acquisition of DCC Labs | 7,255 |
| Goodwill impairment charge | (23,492) |
| Cumulative translation adjustment | (651) |
| Goodwill, gross | 61,707 |
| Accumulated impairment losses | (39,279) |
| Goodwill, net | $ 23,287 |
| X | ||||||||||
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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