Goodwill and Intangible Assets - Schedule of Change in Carrying Amount of Goodwill (Detail) $ in Thousands |
3 Months Ended |
|---|---|
|
Apr. 30, 2016
USD ($)
| |
| Goodwill [Roll Forward] | |
| Goodwill gross, Beginning balance | $ 55,962 |
| Accumulated impairment losses | (15,787) |
| Goodwill, Beginning balance | 40,175 |
| Cumulative translation adjustment | 1,129 |
| Goodwill gross, Ending balance | 57,091 |
| Accumulated impairment losses | (15,787) |
| Goodwill, Ending balance | $ 41,304 |
| 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
|
| X | ||||||||||
- 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
|
| X | ||||||||||
- 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
|
| X | ||||||||||
- 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.
|
| X | ||||||||||
- Definition Amount of increase (decrease) from foreign currency translation adjustments 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
|