Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets - Schedule of Change in Carrying Amount of Goodwill (Detail)

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Goodwill and Intangible Assets - Schedule of Change in Carrying Amount of Goodwill (Detail)
$ in Thousands
6 Months Ended
Jul. 31, 2017
USD ($)
Goodwill Roll Forward  
Goodwill, gross $ 62,566
Accumulated impairment losses (39,279)
Goodwill, net 23,287
Cumulative translation adjustment 1,381
Goodwill, gross 63,947
Accumulated impairment losses (39,279)
Goodwill, net $ 24,668