Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets - Additional Information (Detail)

v3.3.1.900
Goodwill and Intangible Assets - Additional Information (Detail)
9 Months Ended
Oct. 31, 2015
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill, Impairment charges $ 0